Dyno results GT40P heads | Vintage Mustang Forums Early Windsors tend to have fairly restrictive exhaust manifolds, making the addition of a set of headers that much more efficient. The headers will improve this airflow throughout the entire rpm rangeadding more torque and horsepower. GT-40P Heads - 5.0 Mustang & Super Fords Magazine - MotorTrend There are a couple of reasons for this suggestion. We heated the bottle to 950 psi and hit the button at 4,500 rpm. A bone stock 2bbl early 351w with stock replacement forged pistons (9.0 compression) and dyno headers made 211 Hp . And have discovered something that I dont think anyone else knows. That's fantastic for the minimal investment we made. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Since 2003, Jeff has held various positions at Car Craft (including editor), has written books on small block Chevy performance, and even cultivated an impressive collection of 1965 and 1966 Chevelles. 68stang351 Founding Member May 16, 2002 850 The GT40 heads are a bit more versatile, working with the 5.4 and 6.8, while the GT40P (Explorer/Mountaineer) heads will only work on the 6.8 due to an interference issue. However there are plenty of factory heads that with the help of an experienced machine shop can be great. You didnt mention what camshaft you would be choosing or exactly which 5.0L Ford Windsor engine you are working with. This is what I recommend to everyone who is doing a budget 5.0 build. Using the manufacturer recommended springs for your camshaft are a safe bet. We turned to Rare Auto Design in Orlando for dyno tests to find out how much horsepower we gained. Come join the discussion about performance, builds, modifications, reviews, engine swaps, classifieds, troubleshooting, maintenance, and more! Speedmaster PCE281.2046 Small Block Ford Aluminum Cylinder Heads 62cc All costing in the end at least another $2k. There are a lot of variables that must be addressed to give a better estimate, but a good basic estimate is 20-40 HP at the crank. Not *as* good as the GT40p heads, but I'd prefer to not have to worry about exhaust fitment issues, or have a narrow range of what I can work with. I got lucky and found a complete Explorer GT40P engine online. Vehicle: 1972 2 door 302 maverick, 1986 5.0 stang gt convertible,66 mustang coupe, HEMI ram. Gt40/gt40p Heads On A 351w Questions - StangNet this head is complete with new 1.837 int valves and 1.536 exhaust valves. If this is beyond your technical ability, you could ask a local machine shop to perform the modifications. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Never not once have I ever seen a SBF rod bolt create a failure. Over $2050 for the 165/185 renegades. Add a distributor designed for a carbureted 302 but make sure to install the correct distributor gear for your cam. Be careful, I was once bitten by one of those reptile engine builders. For real performance, stock E7TE heads leave a lot to be desired. Not sure about that but got some pictures of the cast iron explorer manifolds on a 302. Compare. Ask Away! with Jeff Smith: Camshaft and Cylinder Head Recommendations Free shipping. just curious. Note the head bolt hole issue, some GT40 iron heads had 1/2 holes, if not they will need to be enlarged. The later model distributors had a different diameter shaft than the earlier ones. I must agree with Jeff Smith. United Engine and Machine sells cheap but decent pistons that will do what you're wanting. But what we were most impressed with was the solid gain in torque over the smaller Voodoo cam from 3,500 and up. The kit offers adjustable power from 50 to 250 hp with a simple jet change. bmcdaniel, Feb 17, 2004 #7. v8maverick Member. The older pushrod engines just dont offer the same kind of power potential for their displacement and it all has to do with cylinder head flow. 1983 Mustang G.T. A mild porting with gasket matching will be very good. I'm an old school guy (289 in 65 mustang), and I'm just looking into the new 5.0 engine (roller cam) stuff recently. 68 XR7 & 68 M-100. OR you could put your automotive journalistic skills in motion by reporting on the many new modern components available for the latest generation 351 Cleveland. Keywords As usual, there is much more to this story. Generally expect with a good cam, intake, roller rockers and a good ignition system to see around 300-350 max rear wheel horsepower, depending on what type of dyno you use. You will have to get special headers to fit these heads since the spark plugs are angled differently than normal 5.0 heads. 331/347 stroker w/gt40p's, waste?Hp?cost involved? - Maverick Mar 23, 2004. I'd much rather be able to drive it at 8 or 9/10s of what it can handle. The GT40 and GT40P cylinder heads are highly sought after, but how do they stack up against other cylinder heads, and is it worth it to upgrade the Fox Body's stock heads? Install a set of 1.7:1 roller-tipped rocker arms on the heads. Because its all been done time after time after. The heads that were used were also old C8 casting with 58cc chambers. '85 GT vert two tone (white on charcoal)white leather, http://www.facebook.com/groups/233213650060739/, http://www.summitracing.com/parts/TFS-2500100/, ascMcLaren & Motorsport/Grand Prix IV Capris, RHD and Other International/Export Models, Mods, Maintenance & Mechanical FAQs/Archive, If this is your first visit, be sure to Im a different animal. For those of you running a carb, or aftermarket intake, you already have a leg up in this area and should see even greater gains in power. Assuming the above configurationa pushrod 5.0L will potentially make between 250 and 260 hp. Aftermarket headers, such as those made by Hooker, BBK and Competition Engineering, are better and are just as easy, if somewhat more expensive, to procure used. I just read about this build on the corral.net. A LOT of them do it these days. It turned out we were conservative on both counts. The Fora platform includes forum software by XenForo. Small-block Fords and Mopars only use four head bolts per cylinder, so retaining proper head-gasket sealespecially with nitrousis a point that demands attention, so we ordered a set of Fel-Pro MLS head gaskets rather than a standard, composition gasket. GT-40 heads HP increase | Mustang Forums at StangNet After a couple grand you have a killer set of heads, but there's got to be a less-expensive way of making horsepower. You can have your current 28 oz rebalanced to 50. 402 HP NA from a HI PO 289 isnt that mysterious of a feat to accomplish with todays SBF Aftermarket parts availability. It's a classic move we've pulled off many times. This time around, we chose a shining example of this junkyard art form. many thanks to all you eco-hippies giving me dirty looks and helping me feel llike an overall badass rebel. If the head bolt holes are 1/2" or slightly larger, ARP makes the washers and can be sourced from Ford Racing or ARP through a speed shop or Summit, Jegs and PAW among others. Just make sure it is a roller cam. Pride is built, in your garage, with your two hands. 1985 Mustang GT Mild 331 4bbl 5 spd, 1985 SEFI LTD LX AOD. If you're running a stock cam, 1.7 rockers will work perfectly. These are a great head but do need some machining mods to make they really work well. Well assume it is a 5.0L with stock heads. 99 Explorer engine (302) with GT40P heads - Ford Muscle Cars Tech Forum Real world data seems to show that GT40 or GT40P cylinder heads, assuming no other mods on your Foxbody, are good to add anywhere between 20-40 HP (over stock heads). We also added a veteran Ford magnetic pickup distributor and used it to drive an MSD ignition system. Stock 93-95 Cobra shortblock (stock cobra cam), GT40X heads, 1.7 rockers, Edelbrock Performer RPM intake, Holley 650, and longtube headers. Ford GT40P 302 5.0L 4 Bar Cylinder Head Assembly Pair w/ 1/2" Head Bolt Hole. Hey all, I'm working on building a 302 with my gt40p heads. Different years can have different combustion chamber sizes but ffor the most part there will be no performance increases by going with 302 heads. We guarantee plenty of burnout action when you add GT-40P heads to your 5.0 Mustang. I'll save the effort and lighten my front end by 50# with aluminum. After graduating from Iowa State University with a journalism degree in 1978, he combined his two passions: cars and writing. In an effort to preserve the history of the Early Fox Era, FEP covers the following vehicles: 79-86 Mustang and Capri, 84-86 Mustang SVO, 78-83 Fairmont & Zephyr, 83-86 LTD & Marquis, 80-88 Thunderbird & Cougar, 82-87 Continental, 84-92 Mark VII, 81-82 Granada. Im new and Im currently building a 302 on a budget and want to raise compression without milling heads but by pistons and I want to get close to 10:1. You'll have to plug the oil hole that is in the engine from the old oil dipstick. Sure, you could race-port the existing E7 castings, which many have done, but then you're putting quite a bit of change into stock heads. I'm also have the regular GT40 heads on my current build. Anythoughts? The cost of a new set of standard replacement roller lifters is very affordable at major retailers like Summit. Paying a premium for a set of GT40P heads or dumping money into some to get their performance to rival aftermarket is not for me. Finally, we exchanged the Explorer's EFI manifold (which is a pretty good manifold in its own right) for an Edelbrock Performer RPM Air Gap intake and a Holley 750-cfm HP-style carburetor. However I think the opportunity window is slowly closing. You gave me the info I was looking for, and I really do appreciate it. Stock valve sizes? i'd love to use these heads,. Their weak point is that the rotator used on the exhaust valve is very thick. GT40P heads, what kind of performance do they give? Dennis Hilliard of Central Coast says we can expect to gain three-tenths in the quarter-mile. built one using a 91' HO short block with a set of AFR 165 heads, Weiand . In review, we rescued a used 5.0L Ford from the boneyard, ported the heads, added a cam, carburetor, intake manifold, and headers, and pulled an amazing 376 hp out of the mix. These are among the best of the iron Ford Windsor heads as they tend to flow much better than earlier castings. 351W with GT40P heads? | Mercury Cougar Owners This kind of improvement may not seem like much, but the owner of our test car, Jamie Holten, runs in FFW Trophy Stock where three-tenths is a lifetime. Thanks for the help, I was planning on puttingin roller rockers or at least new springs, and that engine looks great, hoppfully mine will look at least similar to that one of these days. This test went so well that we were eager to see what the slightly bigger cam would do. The Fora platform includes forum software by XenForo. That's a good combo in my book. The car weighs #2835 with driver. Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. Even with relatively small valve sizes of 1.85-inch intake and 1.46-inch exhaust, the P-heads flow much better than previous. These are some of the pictures I have showing the Explorer manifolds. Can I run the new cam with the same roller hydraulic lifters or do I have to change the lifters too? If you go with a diffrent cam, make sure you change springs, The Trick Flow kit comes with everything for around $130. 302 .030 over with; Scat Forged Steel Rods, SpeedPro pistons and rings . Skip to main content. Worst AFR 165 dyno ever | Factory Five Racing Forum Cant wait to try um out. You can use the stock roller lifters with any size cam you want. I'm running BBK un-equal length shorty's, and I'm able to get all the plugs in, tight, and all plug wires on. We started with a 120,000-mile 5.0L out of a Ford Explorer, removed the EFI and DIS, and pocket ported the stock GT40P iron heads with stock valve sizes. These are Ford iron GT-40P heads. Learn how your comment data is processed. . These timeslips are from 1280' above sea level. I need that part number too! Compare. Im now thinking of adding a cam to match the carb. Rowe studied engineering, philosophy and American literature at Central Florida Community College. I can tell you that with my 9.503 block, 22cc dished pistons and 64cc heads, I'm at 9.5:1 compression. You didnt mention which cam you had in mind. No-option stripper- I like strippers. I'll prob take a trip up there this weekend after scavenging the junkyards, thanks a million. . Plus you will need to drill all the head bolt holes out as the 351W uses larger head bolts. Would have liked to see a comparison done on the same short block using a set of decently-ported early non-Thermactor iron heads Tracy Blackford, 65 Mustang FB, 331 built with 289 H beam rods and 383W piston, 282S cam, self ported '70 351w heads, Dougs Tri-Y headers. How to Get More Horsepower Out of a Ford 289 | It Still Runs JavaScript is disabled. I view the GT40P heads similar to Granada brakes. The newer camshaft is designed for use with a soft bronze distributor gear, not the hardened steel gear used for older camshafts. They are more expensive than standard head gaskets, but they also do the job and are worth the additional money. Because of this, your tuneup will probably need to be modified. At the dragstrip, we gained two-tenths and 2 mph. I turned it because it was tired when I got it. Ford 302W / 5.0L History & Specifications - The Ranger Station Always the weak area in the 289 and 302 is the tiny 5/16 inch connecting rod bolts and the miniscule intake and exhaust ports. PTP Engineering front suspension and 25540R17s all around. Jeff Smith: It would have been better to know a little bit more about your combination, but the short answer is yeswith a hydraulic roller camshaft, assuming the lifters are in good shape and the roller wheels show no unusual wear, they can be re-used on a new cam with no danger of adverse effects. If you have a early 351W ie pre 76 it probably . Motor is going into a Ranger. Compare. Ford Explorer Mountaineer 5.0 Ohv Iron 302 Sbf A forum community dedicated to Ford performance owners and enthusiasts. Install a Ford Motorsport E303, X303 or F303 cam, or any of the similar units from Indy, Lunati or your favorite manufacturer. A good port job can set you back another $500-$1,000. Last Edit: January 18, 2015, 12:05:31 pm by businesstrader Logged shaunp. Weiand 7515 xcellerator intake. Ive bought wrecking yard SBFs and put 20 lbs of boost to them and spin them to 7000 and made 500 HP with several of them. In addition, the cam timing was designed for torque, with duration somewhere around 190 degrees at 0.050 with roughly 0.450-inch lift. AFR 165cc 58cc Heads. Scorpion 1.6 roller rockers. With. The SUV indicated barely 120,000 on the clock, and after yanking the valve covers to judge the engine's condition, Tim Moore instantly made the decision to do the boneyard version of a smash-and-grab. Do you guys have part numbers for the spring kits? The reason this new generation of Ford engines make a ton more power is they also enjoy fantastic cylinder heads and four valves per cylinder. Over $2050 for the 165/185 renegades. Let us explain. .. i would not buy valves unless you need them amd would not switch to studs with these heads for your low hp . Richard Rowe has been writing professionally since 2007, specializing in automotive topics. Mild Build Gt40p We know what you're thinking--only two-tenths from an extra 45 hp? When building an engine there is a lot to take into consideration. fuel injection system . These cast piston short-blocks are not quite as good as the forged piston 5.0L that came in Fox-body Mustangs, but the GT40P heads flow much better than earlier 5.0L heads. 1986 Short block with notched pistons. Well also assume that this engine is running stock exhaust manifolds. Free shipping. Get 500 Horsepower from a Junkyard Ford Explorer 302 - MotorTrend The GT40P cylinder heads had a small combustion chamber ranging from 58-61cc while the GT40 heads had a 63-66cc combustion chamber. But the part about a cam replacement possibly being a labor intensive undertaking is correct. I went to a couple in Tucson and almost all the Ford vehicles that came with a 5.0 had the heads missing. Headers and a camshaft will help but the engine really needs aftermarket 3/8 inch connecting rod bolts and aftermarket cylinder heads. Its NA but makes use of AFR heads and some other aftermarket goodies. How to Build a Budget 383 Stroker Chevy How do I Increase Horsepower on a 440 Cylinder Head Specifications for a 1969 How to Get More Power Out of a 92 4.3 dragster engine image by Robert Young from, Copyright 2023 Leaf Group Ltd. / Leaf Group Media. With no other changes we gained 25 hp using factory iron heads. You didnt mention the car this engine is in, but lets assume there is enough room to remove the radiator and any other coolers and perhaps some or all of the front grille and/or brackets before the cam has sufficient room to exit the front of the engine. Performance & security by Cloudflare. There was an article in Hot Rod magazine in the mid '80's where Jon Kaase was developing 351w packages. However, since Holten's car has an E303 cam, we didn't want the pistons and valves becoming too close, so we chose the 1.6 rockers. Do not ever, ever think about using the tube type manifolds. - I have a 1989 f150 with a 302 5 spd. Not when you can buy a set of Promaxx or AFR Enforcer heads for $1000, that already have decent hardware included. $169.50. Its funny no one mentioned anything about ignition timing or components, Your email address will not be published. He'd be the best source. T5 with 3.73s. For the cherry on top of this Blue Oval desert, we bolted Mike Thermos' simple Powerstar plate nitrous system under the carburetor, installed the 140-hp jets (55 fuel and 55 nitrous), and used the trigger to retard the timing on the MSD ignition by 8 degrees. I think one of the finer traits of a true car guy, is the patience to put a prized car away and just let it sit for a while rather than selling it when life gets in the way. Take the assembly to a machine shop to have it balanced and install it in the block. I ran the Speed Pro L2488 pistons and it had me around 9.9 compression with a .041 head gasket, Now I had GT40 heads milled .020 and so that's just a guess on the CC. Richard Holdener 240K subscribers Subscribe 63K views 1 year ago WESTECH PERFORMANCE GROUP LOW BUCK, GT40P 5.0L HEADS-CHEAP &. Gasoline/Diesel all makes on earth & still doing it today with great pride.Feel free to contact me anytime. With the tuning finalized, the little cam made far more power than we expected, cranking out 328 lb-ft of torque at 4,200 and 294 hp at 5,400 rpm. In order to make Coyote-type power you will need some expensive, high-flow cylinder heads with a short block that can withstand spinning in excess of 6,500 rpm. It has underdrive pulleys, MSD ignition, Bassanni headers and forward exit exhaust. Depending on the Headers you have you might be okay. gt40p headers | Maverick/Comet Forums Late-model ford GT40 and GT40P heads with 1.84-inch intake valves will also flow 185 cfm at 0.50 . Well that article just got me very ancy, I want these heads!! i have a 302 engine from a 1977 granada and i am wondering if gt40p heads from an explorer will fit on this motor. +1 I would go with the regular GT40 heads. Per a UEM tech support email I have the Icon IC736 is supposed to be good for GT40 heads when I asked about it. I got a GT40P off the assembly line years ago. Took me 7 hours to do one head.but they cleaned up real nice. Required fields are marked *. So I've got the motor and heads already for my maverick project. Install a set of 1.7:1 roller-tipped rocker arms on the heads. I'm running stock GT40 heads with stock 4.000 bore on cylinders and a Lunati cam with 256/262; Duration @ .050 (Int/Exh): 213/219; Gross Valve Lift (Int/Exh): .483/.499; LSA/ICL: 112/108. Test 3: Installed the larger Lunati camagain, no other changes. A forum community dedicated to vintage Ford Mustang owners and enthusiasts. JavaScript is disabled. That carbureted GT40P motor made 465 on th engine dyno with a .500" 239/244 camshaft, Holley 650 carb and Weiand Stealth intake. Day Funeral Home Marshfield, Mo Obituaries, Univision En Vivo Por Internet, How Much Is A Farthing Worth In Us Dollars, Melissa Firpo Chin, Melissa Firpo Chin, Articles OTHER
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302 with gt40p heads horsepower

302 with gt40p heads horsepower

*** 65 Mustang 351C 4v, AOD, 4.11 gears *** 66 Galaxie convert big block. any input is apprecciated:smartass: Thank you for the info, if all I have to worry about is the plugs then I'm in good shape hahaha. fordfan289, Aug 27, 2011 While the heads were off getting a massage, we turned our attention to the cam timing. SB Ford, GT40 .575" Lift Max Output II Drop in Valve Spring Kit, Hyd Roller, 140 Lb Seat. There's not a lot of reson to use 351 heads later than '75 since they essentially identical to 302 heads except for head bolt holes. #3::: Do your homework,get quality parts,dont skimp. Dyno results GT40P heads | Vintage Mustang Forums Early Windsors tend to have fairly restrictive exhaust manifolds, making the addition of a set of headers that much more efficient. The headers will improve this airflow throughout the entire rpm rangeadding more torque and horsepower. GT-40P Heads - 5.0 Mustang & Super Fords Magazine - MotorTrend There are a couple of reasons for this suggestion. We heated the bottle to 950 psi and hit the button at 4,500 rpm. A bone stock 2bbl early 351w with stock replacement forged pistons (9.0 compression) and dyno headers made 211 Hp . And have discovered something that I dont think anyone else knows. That's fantastic for the minimal investment we made. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Since 2003, Jeff has held various positions at Car Craft (including editor), has written books on small block Chevy performance, and even cultivated an impressive collection of 1965 and 1966 Chevelles. 68stang351 Founding Member May 16, 2002 850 The GT40 heads are a bit more versatile, working with the 5.4 and 6.8, while the GT40P (Explorer/Mountaineer) heads will only work on the 6.8 due to an interference issue. However there are plenty of factory heads that with the help of an experienced machine shop can be great. You didnt mention what camshaft you would be choosing or exactly which 5.0L Ford Windsor engine you are working with. This is what I recommend to everyone who is doing a budget 5.0 build. Using the manufacturer recommended springs for your camshaft are a safe bet. We turned to Rare Auto Design in Orlando for dyno tests to find out how much horsepower we gained. Come join the discussion about performance, builds, modifications, reviews, engine swaps, classifieds, troubleshooting, maintenance, and more! Speedmaster PCE281.2046 Small Block Ford Aluminum Cylinder Heads 62cc All costing in the end at least another $2k. There are a lot of variables that must be addressed to give a better estimate, but a good basic estimate is 20-40 HP at the crank. Not *as* good as the GT40p heads, but I'd prefer to not have to worry about exhaust fitment issues, or have a narrow range of what I can work with. I got lucky and found a complete Explorer GT40P engine online. Vehicle: 1972 2 door 302 maverick, 1986 5.0 stang gt convertible,66 mustang coupe, HEMI ram. Gt40/gt40p Heads On A 351w Questions - StangNet this head is complete with new 1.837 int valves and 1.536 exhaust valves. If this is beyond your technical ability, you could ask a local machine shop to perform the modifications. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Never not once have I ever seen a SBF rod bolt create a failure. Over $2050 for the 165/185 renegades. Add a distributor designed for a carbureted 302 but make sure to install the correct distributor gear for your cam. Be careful, I was once bitten by one of those reptile engine builders. For real performance, stock E7TE heads leave a lot to be desired. Not sure about that but got some pictures of the cast iron explorer manifolds on a 302. Compare. Ask Away! with Jeff Smith: Camshaft and Cylinder Head Recommendations Free shipping. just curious. Note the head bolt hole issue, some GT40 iron heads had 1/2 holes, if not they will need to be enlarged. The later model distributors had a different diameter shaft than the earlier ones. I must agree with Jeff Smith. United Engine and Machine sells cheap but decent pistons that will do what you're wanting. But what we were most impressed with was the solid gain in torque over the smaller Voodoo cam from 3,500 and up. The kit offers adjustable power from 50 to 250 hp with a simple jet change. bmcdaniel, Feb 17, 2004 #7. v8maverick Member. The older pushrod engines just dont offer the same kind of power potential for their displacement and it all has to do with cylinder head flow. 1983 Mustang G.T. A mild porting with gasket matching will be very good. I'm an old school guy (289 in 65 mustang), and I'm just looking into the new 5.0 engine (roller cam) stuff recently. 68 XR7 & 68 M-100. OR you could put your automotive journalistic skills in motion by reporting on the many new modern components available for the latest generation 351 Cleveland. Keywords As usual, there is much more to this story. Generally expect with a good cam, intake, roller rockers and a good ignition system to see around 300-350 max rear wheel horsepower, depending on what type of dyno you use. You will have to get special headers to fit these heads since the spark plugs are angled differently than normal 5.0 heads. 331/347 stroker w/gt40p's, waste?Hp?cost involved? - Maverick Mar 23, 2004. I'd much rather be able to drive it at 8 or 9/10s of what it can handle. The GT40 and GT40P cylinder heads are highly sought after, but how do they stack up against other cylinder heads, and is it worth it to upgrade the Fox Body's stock heads? Install a set of 1.7:1 roller-tipped rocker arms on the heads. Because its all been done time after time after. The heads that were used were also old C8 casting with 58cc chambers. '85 GT vert two tone (white on charcoal)white leather, http://www.facebook.com/groups/233213650060739/, http://www.summitracing.com/parts/TFS-2500100/, ascMcLaren & Motorsport/Grand Prix IV Capris, RHD and Other International/Export Models, Mods, Maintenance & Mechanical FAQs/Archive, If this is your first visit, be sure to Im a different animal. For those of you running a carb, or aftermarket intake, you already have a leg up in this area and should see even greater gains in power. Assuming the above configurationa pushrod 5.0L will potentially make between 250 and 260 hp. Aftermarket headers, such as those made by Hooker, BBK and Competition Engineering, are better and are just as easy, if somewhat more expensive, to procure used. I just read about this build on the corral.net. A LOT of them do it these days. It turned out we were conservative on both counts. The Fora platform includes forum software by XenForo. Small-block Fords and Mopars only use four head bolts per cylinder, so retaining proper head-gasket sealespecially with nitrousis a point that demands attention, so we ordered a set of Fel-Pro MLS head gaskets rather than a standard, composition gasket. GT-40 heads HP increase | Mustang Forums at StangNet After a couple grand you have a killer set of heads, but there's got to be a less-expensive way of making horsepower. You can have your current 28 oz rebalanced to 50. 402 HP NA from a HI PO 289 isnt that mysterious of a feat to accomplish with todays SBF Aftermarket parts availability. It's a classic move we've pulled off many times. This time around, we chose a shining example of this junkyard art form. many thanks to all you eco-hippies giving me dirty looks and helping me feel llike an overall badass rebel. If the head bolt holes are 1/2" or slightly larger, ARP makes the washers and can be sourced from Ford Racing or ARP through a speed shop or Summit, Jegs and PAW among others. Just make sure it is a roller cam. Pride is built, in your garage, with your two hands. 1985 Mustang GT Mild 331 4bbl 5 spd, 1985 SEFI LTD LX AOD. If you're running a stock cam, 1.7 rockers will work perfectly. These are a great head but do need some machining mods to make they really work well. Well assume it is a 5.0L with stock heads. 99 Explorer engine (302) with GT40P heads - Ford Muscle Cars Tech Forum Real world data seems to show that GT40 or GT40P cylinder heads, assuming no other mods on your Foxbody, are good to add anywhere between 20-40 HP (over stock heads). We also added a veteran Ford magnetic pickup distributor and used it to drive an MSD ignition system. Stock 93-95 Cobra shortblock (stock cobra cam), GT40X heads, 1.7 rockers, Edelbrock Performer RPM intake, Holley 650, and longtube headers. Ford GT40P 302 5.0L 4 Bar Cylinder Head Assembly Pair w/ 1/2" Head Bolt Hole. Hey all, I'm working on building a 302 with my gt40p heads. Different years can have different combustion chamber sizes but ffor the most part there will be no performance increases by going with 302 heads. We guarantee plenty of burnout action when you add GT-40P heads to your 5.0 Mustang. I'll save the effort and lighten my front end by 50# with aluminum. After graduating from Iowa State University with a journalism degree in 1978, he combined his two passions: cars and writing. In an effort to preserve the history of the Early Fox Era, FEP covers the following vehicles: 79-86 Mustang and Capri, 84-86 Mustang SVO, 78-83 Fairmont & Zephyr, 83-86 LTD & Marquis, 80-88 Thunderbird & Cougar, 82-87 Continental, 84-92 Mark VII, 81-82 Granada. Im new and Im currently building a 302 on a budget and want to raise compression without milling heads but by pistons and I want to get close to 10:1. You'll have to plug the oil hole that is in the engine from the old oil dipstick. Sure, you could race-port the existing E7 castings, which many have done, but then you're putting quite a bit of change into stock heads. I'm also have the regular GT40 heads on my current build. Anythoughts? The cost of a new set of standard replacement roller lifters is very affordable at major retailers like Summit. Paying a premium for a set of GT40P heads or dumping money into some to get their performance to rival aftermarket is not for me. Finally, we exchanged the Explorer's EFI manifold (which is a pretty good manifold in its own right) for an Edelbrock Performer RPM Air Gap intake and a Holley 750-cfm HP-style carburetor. However I think the opportunity window is slowly closing. You gave me the info I was looking for, and I really do appreciate it. Stock valve sizes? i'd love to use these heads,. Their weak point is that the rotator used on the exhaust valve is very thick. GT40P heads, what kind of performance do they give? Dennis Hilliard of Central Coast says we can expect to gain three-tenths in the quarter-mile. built one using a 91' HO short block with a set of AFR 165 heads, Weiand . In review, we rescued a used 5.0L Ford from the boneyard, ported the heads, added a cam, carburetor, intake manifold, and headers, and pulled an amazing 376 hp out of the mix. These are among the best of the iron Ford Windsor heads as they tend to flow much better than earlier castings. 351W with GT40P heads? | Mercury Cougar Owners This kind of improvement may not seem like much, but the owner of our test car, Jamie Holten, runs in FFW Trophy Stock where three-tenths is a lifetime. Thanks for the help, I was planning on puttingin roller rockers or at least new springs, and that engine looks great, hoppfully mine will look at least similar to that one of these days. This test went so well that we were eager to see what the slightly bigger cam would do. The Fora platform includes forum software by XenForo. That's a good combo in my book. The car weighs #2835 with driver. Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. Even with relatively small valve sizes of 1.85-inch intake and 1.46-inch exhaust, the P-heads flow much better than previous. These are some of the pictures I have showing the Explorer manifolds. Can I run the new cam with the same roller hydraulic lifters or do I have to change the lifters too? If you go with a diffrent cam, make sure you change springs, The Trick Flow kit comes with everything for around $130. 302 .030 over with; Scat Forged Steel Rods, SpeedPro pistons and rings . Skip to main content. Worst AFR 165 dyno ever | Factory Five Racing Forum Cant wait to try um out. You can use the stock roller lifters with any size cam you want. I'm running BBK un-equal length shorty's, and I'm able to get all the plugs in, tight, and all plug wires on. We started with a 120,000-mile 5.0L out of a Ford Explorer, removed the EFI and DIS, and pocket ported the stock GT40P iron heads with stock valve sizes. These are Ford iron GT-40P heads. Learn how your comment data is processed. . These timeslips are from 1280' above sea level. I need that part number too! Compare. Im now thinking of adding a cam to match the carb. Rowe studied engineering, philosophy and American literature at Central Florida Community College. I can tell you that with my 9.503 block, 22cc dished pistons and 64cc heads, I'm at 9.5:1 compression. You didnt mention which cam you had in mind. No-option stripper- I like strippers. I'll prob take a trip up there this weekend after scavenging the junkyards, thanks a million. . Plus you will need to drill all the head bolt holes out as the 351W uses larger head bolts. Would have liked to see a comparison done on the same short block using a set of decently-ported early non-Thermactor iron heads Tracy Blackford, 65 Mustang FB, 331 built with 289 H beam rods and 383W piston, 282S cam, self ported '70 351w heads, Dougs Tri-Y headers. How to Get More Horsepower Out of a Ford 289 | It Still Runs JavaScript is disabled. I view the GT40P heads similar to Granada brakes. The newer camshaft is designed for use with a soft bronze distributor gear, not the hardened steel gear used for older camshafts. They are more expensive than standard head gaskets, but they also do the job and are worth the additional money. Because of this, your tuneup will probably need to be modified. At the dragstrip, we gained two-tenths and 2 mph. I turned it because it was tired when I got it. Ford 302W / 5.0L History & Specifications - The Ranger Station Always the weak area in the 289 and 302 is the tiny 5/16 inch connecting rod bolts and the miniscule intake and exhaust ports. PTP Engineering front suspension and 25540R17s all around. Jeff Smith: It would have been better to know a little bit more about your combination, but the short answer is yeswith a hydraulic roller camshaft, assuming the lifters are in good shape and the roller wheels show no unusual wear, they can be re-used on a new cam with no danger of adverse effects. If you have a early 351W ie pre 76 it probably . Motor is going into a Ranger. Compare. Ford Explorer Mountaineer 5.0 Ohv Iron 302 Sbf A forum community dedicated to Ford performance owners and enthusiasts. Install a Ford Motorsport E303, X303 or F303 cam, or any of the similar units from Indy, Lunati or your favorite manufacturer. A good port job can set you back another $500-$1,000. Last Edit: January 18, 2015, 12:05:31 pm by businesstrader Logged shaunp. Weiand 7515 xcellerator intake. Ive bought wrecking yard SBFs and put 20 lbs of boost to them and spin them to 7000 and made 500 HP with several of them. In addition, the cam timing was designed for torque, with duration somewhere around 190 degrees at 0.050 with roughly 0.450-inch lift. AFR 165cc 58cc Heads. Scorpion 1.6 roller rockers. With. The SUV indicated barely 120,000 on the clock, and after yanking the valve covers to judge the engine's condition, Tim Moore instantly made the decision to do the boneyard version of a smash-and-grab. Do you guys have part numbers for the spring kits? The reason this new generation of Ford engines make a ton more power is they also enjoy fantastic cylinder heads and four valves per cylinder. Over $2050 for the 165/185 renegades. Let us explain. .. i would not buy valves unless you need them amd would not switch to studs with these heads for your low hp . Richard Rowe has been writing professionally since 2007, specializing in automotive topics. Mild Build Gt40p We know what you're thinking--only two-tenths from an extra 45 hp? When building an engine there is a lot to take into consideration. fuel injection system . These cast piston short-blocks are not quite as good as the forged piston 5.0L that came in Fox-body Mustangs, but the GT40P heads flow much better than earlier 5.0L heads. 1986 Short block with notched pistons. Well also assume that this engine is running stock exhaust manifolds. Free shipping. Get 500 Horsepower from a Junkyard Ford Explorer 302 - MotorTrend The GT40P cylinder heads had a small combustion chamber ranging from 58-61cc while the GT40 heads had a 63-66cc combustion chamber. But the part about a cam replacement possibly being a labor intensive undertaking is correct. I went to a couple in Tucson and almost all the Ford vehicles that came with a 5.0 had the heads missing. Headers and a camshaft will help but the engine really needs aftermarket 3/8 inch connecting rod bolts and aftermarket cylinder heads. Its NA but makes use of AFR heads and some other aftermarket goodies. How to Build a Budget 383 Stroker Chevy How do I Increase Horsepower on a 440 Cylinder Head Specifications for a 1969 How to Get More Power Out of a 92 4.3 dragster engine image by Robert Young from, Copyright 2023 Leaf Group Ltd. / Leaf Group Media. With no other changes we gained 25 hp using factory iron heads. You didnt mention the car this engine is in, but lets assume there is enough room to remove the radiator and any other coolers and perhaps some or all of the front grille and/or brackets before the cam has sufficient room to exit the front of the engine. Performance & security by Cloudflare. There was an article in Hot Rod magazine in the mid '80's where Jon Kaase was developing 351w packages. However, since Holten's car has an E303 cam, we didn't want the pistons and valves becoming too close, so we chose the 1.6 rockers. Do not ever, ever think about using the tube type manifolds. - I have a 1989 f150 with a 302 5 spd. Not when you can buy a set of Promaxx or AFR Enforcer heads for $1000, that already have decent hardware included. $169.50. Its funny no one mentioned anything about ignition timing or components, Your email address will not be published. He'd be the best source. T5 with 3.73s. For the cherry on top of this Blue Oval desert, we bolted Mike Thermos' simple Powerstar plate nitrous system under the carburetor, installed the 140-hp jets (55 fuel and 55 nitrous), and used the trigger to retard the timing on the MSD ignition by 8 degrees. I think one of the finer traits of a true car guy, is the patience to put a prized car away and just let it sit for a while rather than selling it when life gets in the way. Take the assembly to a machine shop to have it balanced and install it in the block. I ran the Speed Pro L2488 pistons and it had me around 9.9 compression with a .041 head gasket, Now I had GT40 heads milled .020 and so that's just a guess on the CC. Richard Holdener 240K subscribers Subscribe 63K views 1 year ago WESTECH PERFORMANCE GROUP LOW BUCK, GT40P 5.0L HEADS-CHEAP &. Gasoline/Diesel all makes on earth & still doing it today with great pride.Feel free to contact me anytime. With the tuning finalized, the little cam made far more power than we expected, cranking out 328 lb-ft of torque at 4,200 and 294 hp at 5,400 rpm. In order to make Coyote-type power you will need some expensive, high-flow cylinder heads with a short block that can withstand spinning in excess of 6,500 rpm. It has underdrive pulleys, MSD ignition, Bassanni headers and forward exit exhaust. Depending on the Headers you have you might be okay. gt40p headers | Maverick/Comet Forums Late-model ford GT40 and GT40P heads with 1.84-inch intake valves will also flow 185 cfm at 0.50 . Well that article just got me very ancy, I want these heads!! i have a 302 engine from a 1977 granada and i am wondering if gt40p heads from an explorer will fit on this motor. +1 I would go with the regular GT40 heads. Per a UEM tech support email I have the Icon IC736 is supposed to be good for GT40 heads when I asked about it. I got a GT40P off the assembly line years ago. Took me 7 hours to do one head.but they cleaned up real nice. Required fields are marked *. So I've got the motor and heads already for my maverick project. Install a set of 1.7:1 roller-tipped rocker arms on the heads. I'm running stock GT40 heads with stock 4.000 bore on cylinders and a Lunati cam with 256/262; Duration @ .050 (Int/Exh): 213/219; Gross Valve Lift (Int/Exh): .483/.499; LSA/ICL: 112/108. Test 3: Installed the larger Lunati camagain, no other changes. A forum community dedicated to vintage Ford Mustang owners and enthusiasts. JavaScript is disabled. That carbureted GT40P motor made 465 on th engine dyno with a .500" 239/244 camshaft, Holley 650 carb and Weiand Stealth intake.

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