302 with gt40p heads horsepower

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302 with gt40p heads horsepowernight clubs in grand baie, mauritius

The heads that were used were also old C8 casting with 58cc chambers. I just read about this build on the corral.net. 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. Despite adding 30 degrees of intake duration, this cam improved torque throughout the entire test from 3,000 rpm on up. If you can get the mentioned GT-40 heads with studs for a good price, that would be good for you. Here is the lowdown on exhaust manifolds and VALVE SPRINGS. Part of this reason is due to its inherent strength and simplicity, but a lot of it has to do with how little Ford has changed it over the years. You will have to get special headers to fit these heads since the spark plugs are angled differently than normal 5.0 heads. Rowe studied engineering, philosophy and American literature at Central Florida Community College. ***Most important is theStupid question is the one that was never asked!*** The combination of this cam with your intake and headers will produce a very nice street engine. Don't let the fact that the iron GT40 heads have a larger exhaust valve fool you. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. Sponsored. Compare. never messed with the timing, its at 35* total . 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. The HP DIFF column on the far right lists the horsepower difference between Test 1 and Test 3. 1983 Mustang G.T. . I'm sure the dyno operator used some goofball correction factor to make the numbers look higher. FULL DYNO RESULTS. (Please note these are not GT40P Explorer heads). Have fun, be safe, enjoy. 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. SB Ford, GT40 .575" Lift Max Output II Drop in Valve Spring Kit, Hyd Roller, 140 Lb Seat. At the dragstrip, we gained two-tenths and 2 mph. I would like to know what heads, cam and intake manifold combination to use for the most HP I can squeeze out of that motor. I guess someone could just do a basic valve job and throw on the GT40 upper/lower intake for a cheap HP boost. Anythoughts? The MPH was there to run a little better but the local track is about terrible. Not bad for off the shelf parts and a stock shortblock. Test 3: Installed the larger Lunati camagain, no other changes. Not when you can buy a set of Promaxx or AFR Enforcer heads for $1000, that already have decent hardware included. Skip to main content. AFR 165 Heads | Have options for pedestal mounted rocker arms or stud mounted rocker arms. Features hardened 4140 Chromoly retainers, valve locks, spring shims, a spring height gauge, valve seals, and instructions. Most all long tubes come out far enough to clear and other short tube headers will work but there is clearance issues on two of the cylinders. With gt40p heads and 289 hipo exhaust manifolds changing sparkplugs is the same as the original 302 heads and manifolds, I use the spark plugs that are recomended for the explorer with gt40p heads and you can use straight or angled boots. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Richard Holdener 240K subscribers Subscribe 63K views 1 year ago WESTECH PERFORMANCE GROUP LOW BUCK, GT40P 5.0L HEADS-CHEAP &. No-option stripper- I like strippers. But dont think that adding a bigger camshaft will make more power. For additional insurance, we also added a set of ARP head studs, which are stronger and offer better thread overlap than factory bolts, which helps prevent pulling threads out of a used block. We know what you're thinking--only two-tenths from an extra 45 hp? You didnt provide a lot of information about the engine itself, Im assuming its 85 or newer ( roller cam) May need a freshen up of the bottom end if compression is the issue. Most of them are aware of what changes need to be completed. Im now thinking of adding a cam to match the carb. These are some of the pictures I have showing the Explorer manifolds. P-heads have a smaller combustion chamber at 59cc, which will bump the compression ratio up on an otherwise-stock 5.0 engine. The heads also required some machine work, including screw-in studs, guideplates, and widening the spring pockets for bigger valvesprings. i've got a short block started, and i recently came across a set of GT40P heads for FREE ( love family members). This website is using a security service to protect itself from online attacks. This is what I recommend to everyone who is doing a budget 5.0 build. The car weighs #2835 with driver. Finding Gt40p heads at the junkyard is getting more and more complicated and if you want to upgrade the heads you have to take into account the costs of the machine shop and compare everything to a set of cheap aluminum heads. Take the assembly to a machine shop to have it balanced and install it in the block. 1983 Mustang G.T. 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. If you have a early 351W ie pre 76 it probably . Best of all, no machining is required to install these on your stock cast iron heads! As a final goal, we decided to bolt on a simple nitrous system and see if we could push this little small-block Ford to make some real power. Last Edit: January 18, 2015, 12:05:31 pm by businesstrader Logged shaunp. However I think the opportunity window is slowly closing. They were located in Tahachapi CA, and were sold with upgraded springs for $650.00, back in 2002-2003 ish. (its not their engine) All in all, the addition of GT-40P heads to any 5.0 Mustang is a worthwhile venture, especially if you're on a budget (aren't we all) or shooting for the Trophy Stock title. The 2 heads are about the same when looking at the numbers with the GT40p heads having a slight edge. Once the headers are in place, then you can consider if you still want more power. Install a "wet" nitrous plate system (which carries both nitrous and fuel) onto the intake manifold and jet it conservatively for a 100 horsepower shot. Come join the discussion about popular models such as the Mustang, Galaxie, Falcon, Fairlane, Torino, Shelby and many more! The later model distributors had a different diameter shaft than the earlier ones. Slover primarily focused on the exhaust side of the GT40P heads. Dennis Hilliard of Central Coast says we can expect to gain three-tenths in the quarter-mile. The tube headers showed a gain of almost 100 hp! Not sure about that but got some pictures of the cast iron explorer manifolds on a 302. E303 Cam advanced 4 degrees. These are some of the best castings Ford ever produced for this engine, and are still fairly cheap and available used. Here is my setup. Buy the lifters for peace of mind now and hopefully for the duration. They suffered from poor aftermarket support up until about 15 years ago when it really came on strong. We were cruising the 'yard a while back and located a 2000 Ford Explorer with an EFI 5.0L V-8 engine. Like I said lots of options. thats after 3 hours of idling/midrange hits to tune the idle and part throttle . i know a guy who used to build race engines so he has all the right tools, how much would it help to get the heads ported and polished or anything else he could do to them. You need to check. 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? Weiand 7515 xcellerator intake. I turned it because it was tired when I got it. If you smooth out the bowls and exhaust ports and gasket match the intakes they should flow decent. Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) - GT40P heads? Similar to regular GT-40 heads, the biggest difference between the two is that the P-heads feature a revised spark plug angle which extends the plug into the combustion chamber, putting the flame front close to the absolute center of the chamber, resulting in a smoother combustion process. Advanced: Daily Deals; Help & Contact; Sell; My eBay Expand My . bmcdaniel, Feb 17, 2004 #7. v8maverick Member. Our recommendation would be, rather than change the camshaft, you might want to look into adding a set of long-tube headers and a dual exhaust if the engine is not already so equipped. Just make sure it is a roller cam. While we've seen engine dyno tests performed with GT-40P heads replacing factory E7TE castings and resulting in a boost of more than 25 hp, we have reluctantly set our horsepower gain goal at 25 ponies, as well. In a lightweight Fox or early Mustang with a five-speed behind it, this would be a great little street engine. Good on ya Jeff Smith. The only one that's close, is #7. And agree the cams do help and a few tricks with the heads that I have discovered really make a difference. Again, assuming this is a nearly stock 5.0L with stock heads, the Weiand Street Warrior dual plane intake and 600 cfm carburetor, its important to not become overly aggressive and choose a big camshaft. I'm wondering how these heads will interact with the paxton 1220 sl supercharger I'm trying to put on. 69-70 302 heads (the ones with the heart-shaped combustion chamber) Any early 289 heads for the chamber size (but you'll have small ports & valves w/all that CR) Flat Ernie, Aug 27, 2011 SHARE POST #8 fordfan289 Member from indiana correct me if Im wrong but cant you use 351c heads and get the same thing as a 302 boss. Im a different animal. Depending on the Headers you have you might be okay. But the part about a cam replacement possibly being a labor intensive undertaking is correct. I have a 432 HP non Hi Po 289 I built. 68 XR7 & 68 M-100. I've got gt40p heads for it I'll be running, and can't afford better . For a better experience, please enable JavaScript in your browser before proceeding. Eldelbrocks Air Gap intake manifold should work well with the combination. Every thing he tells you on this site is true. GT40P heads, what kind of performance do they give? Purchase a set of flat top pistons (from Ford Motorsport, TRW or Keith Black) with machined valve reliefs and designed to provide 10:1 compression with a 59 to 60 cc combustion chamber cylinder head. With. I'll save the effort and lighten my front end by 50# with aluminum. The '00 Ford Explorers and Mercury Moutaineers were factory equipped with one of Ford's better 5.0L motors. The entire front accessory drive and timing chain cover must be removed, along with the distributor and intake manifold. Your email address will not be published. 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). Most of the time, GT-40 heads are worth a good 20-40hp over stock heads. Purchase any used aftermarket manifold for the 302 that is designed to function in the 3,500 to 6,500 power band. There are too many variables to add to this regarding aftermarket stroker kits or components. 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. Find many great new & used options and get the best deals for FORD GT40p 4 BAR HEADS IN GOOD CONDITION w/ONE BOLT BROKEN at the best online prices at eBay! The cost of a new set of standard replacement roller lifters is very affordable at major retailers like Summit. Where they differ is the combustion chamber size. this head fits years 95-01 explorer mountaineer mercury mountaineer . The headers will improve this airflow throughout the entire rpm rangeadding more torque and horsepower. Those are really good numbers. The 302 uses smaller 7/16" head bolts and your "P" heads may or may not require the step washers. A forum community dedicated to vintage Ford Mustang owners and enthusiasts. Keywords i have a question once i get the gt40p heads from the explorer truck can i also take the exhaust manifolds or headers and fit them in my 66 mustang:?:!?!?!? JavaScript is disabled. Well assume it is a 5.0L with stock heads. Overview. Maybe I'll think about a cam swap? Within a few hours of his discovery, the engine was sitting in the back of his truck on its way to a new home. Over $2050 for the 165/185 renegades. Performance & security by Cloudflare. For all of us interested in Gt40p heads. Actually, making around 240 to 250 hp with a near-stock Windsor 302 will feel pretty good. You will have to get special headers to fit these heads since the spark plugs are angled differently than normal 5.0 heads. 1979 Indy 500 Pace Car. Tim's junkyard refugee survived the beating and we had a bitchin' story. There is a better way. Required fields are marked *. I have a 302 Windsor V8 EFI engine that I converted to a 600 cfm carburetor with a Street Warrior intake manifold. Actually, making around 240 to 250 hp with a near-stock Windsor 302 will feel pretty good. 302 explorer short block with roughly 80k miles GT40's from a local u pull n pay ($97) weiand x-celerator trick flow stage 1 cam 650 holley double pumper car made 322/329 SAE . However there are plenty of factory heads that with the help of an experienced machine shop can be great. Choose a cylinder head before you install the pistons. Along with the heads, we used MAC headers for GT-40P heads. Do not ever, ever think about using the tube type manifolds. I am working on a set of iron GT40s hoping it goes faster. I'd get the gt40 setup, and put an s trim on it. For the most part 302 heads and 351W heads are the same. how hard to put on? For both the GT40 and GT40p heads, I STRONGLY suggest upgrading the valve springs. Building a 302-inch small-block to produce 400 hp is really no big deal, but doing. Or just play it safe and let the fans ask away about another daring 5.0 TB bolt on or for an exciting surprise, do a LS______ fill in the blanks. This is just a quick overview of the changes that need to be done. #3::: Do your homework,get quality parts,dont skimp. Ha! Well that article just got me very ancy, I want these heads!! It has underdrive pulleys, MSD ignition, Bassanni headers and forward exit exhaust. i have a 302 engine from a 1977 granada and i am wondering if gt40p heads from an explorer will fit on this motor. 02-11-2012, 07:16 PM #6 fiveoh 86lx We need a build on a 400+ hp 302/6 build. He'll have to get a gear for his distributor. The specs are a conservative 212/218 degrees of duration at 0.050-inch tappet lift but offer a really nice 0.512-inch valve lift for both the intake and exhaust. Ford's seminal 302 engine (later re-dubbed the 5.0) has been popular with budget-minded hot rodders for decades. I used Lightning heads on my 302, (GT40 not P) with stock rockers on a flat tappet engine. Save narve00 We turned to Rare Auto Design in Orlando for dyno tests to find out how much horsepower we gained. While the heads were off getting a massage, we turned our attention to the cam timing. This pushed that little Ford to a peak horsepower of 503, and that was where we stopped. Because of this, your tuneup will probably need to be modified. However, when we dyno'd the car before installing the GT-40P heads, the fan was on the car. I'm also have the regular GT40 heads on my current build. Cant wait to try um out. This will cost additional money but is still worth it, in our opinion. If I remember right, non of the GT40P's (later models) had the thermactor smog provisions. Come join the discussion about performance, builds, modifications, reviews, engine swaps, classifieds, troubleshooting, maintenance, and more! It's an 86 roller 5.0 engine that had a recent rebuild sometime in the past with keith black pistons, otherwise stock. 302, GT40P Heads, E cam, 4 into 4, Holley 600, Mallory Unilite, Levy SD T5, 3.73, 15" Team III, firewall mod, trunk mod, trailer hitch, drivers foot box mod, front tow rings. With the P-heads requiring pedestal-mount rockers, we also called up Crane Cams for a set of 1.6 pedestal-mount roller rockers. Vehicle: 1972 2 door 302 maverick, 1986 5.0 stang gt convertible,66 mustang coupe, HEMI ram. I recall having an absolute blast with my old K-code coupe back in the day. As noted, this is looking like hes building a 351 Lightning truck motor, which is a good way to go. As with all head installations, check piston-to-valve clearance before final startup. http://vb.foureyedpride.com/showthread.php?t=89153, http://www.facebook.com/groups/233213650060739/, 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 I must agree with Jeff Smith. In a 3,250-pound car like a Mustang with 3.50 gears and an automatic with a 2,800-rpm converter, this 5.0L could pull 12.80s at 108 mph. Yea. JEGS High Performance. . They work, but present their own challenges. The reply has so many assumptions that I cant even assume to know the answer. 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. Aside from the cost of the nitrous itself, this setup should cost you little more than a stock rebuild using all brand new parts. Hey all, I'm working on building a 302 with my gt40p heads. Build Thread 1965 Fastback Project "Racesteed". This one added another 10 degrees of duration over the smaller Voodoo cam, along with 0.020 inch more intake valve lift. I have to agree, the GT40P heads flow better than the GT40 iron heads. Cloudflare Ray ID: 7a2e2d95dedea1e4 Many years ago, a friend bought a used 2001 Mercury Mountaineer 5.0L that was equipped with a set of really decent GT40P style iron heads. The best thing to do would be to use a specific break-in oil for the first 200 to 300 miles of use to reduce the change of a potential problem with undue wear. If you wanted to make your engine feel strong, these would be a decent investment, but they will require some modifications. 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. The asterisk HP differences are calculated using Test 1's 294-hp peak. We didn't increase the valve size, although we did have to add Manley valves to get the proper spring-installed height. Perhaps even more surprising was how well this engine idled, calmly purring with 16 inches of manifold vacuum at 980 rpm. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. That's more than enough to feed a power-brake booster. Yeah, out of a bolt on upgrade, you'd probably be looking at 260-280rwhp ish with supporting mods. 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. Ford GT40P 302 5.0L 4 Bar Cylinder Head Assembly Pair w/ 1/2" Head Bolt Hole. Im 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. It's a classic move we've pulled off many times. REMANUFACTURED FORD 302 5.0 COBRA GT40 CYLINDER HEADS. Can anyone give me a little feedback about a '99 Explorer 5.0, and tell me if it's my answer. Pretty sure that was name, but I could be wrong. This test went so well that we were eager to see what the slightly bigger cam would do. It took him and yours truly eight hours from start to finish, using air tools and a lift to gain access to the header flanges. many thanks to all you eco-hippies giving me dirty looks and helping me feel llike an overall badass rebel. Smith began writing for Car Craft magazine in 1979 and became editor in 1984. Install a set of GT-40P cylinder heads from a late 1990's Ford Explorer or a set of GT40 heads from an early 1990's Mustang 5.0L. 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. Mac and Ford Motorsport both make a GT40P spacific header. They almost seem like flywheel numbers rather than RWHP numbers. JavaScript is disabled. Is asking advice for a fairly common situation involving parts with mandatory compatibility between the two for performance and longevity. All Ford Mustangs | Model Specific Forums, GT-40P Heads - 5.0 Mustang & Super Fords Magazine. I wouldnt recommend reusing lifters though. There are caveats to this plan, however. 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. Install a Ford Motorsport E303, X303 or F303 cam, or any of the similar units from Indy, Lunati or your favorite manufacturer. With the engine reassembled, we boxed up our second camshaft and headed for Westech's dyno. You could run a thinner head gasket as well. Calculating pushrod length We bolted the Ford to the dyno with a set of 158-inch long-tube headers and an 18-inch collector extension to help the low-speed torque, then we fired up the small-block. The 5.0L with the GT40 head had a 9.0:1 compression, and the 5.0L with the GT40P head had 9.1:1 compression. 1 - 7 of 7 Posts. The dyno recorded a peak horsepower reading of 489 hp, but the air/fuel ratio was slightly on the rich side at 11.5:1, so we increased the nitrous jet to a 61 and hit the button again. 69.90.139.244 JavaScript is disabled. You can email the site owner to let them know you were blocked. Per a UEM tech support email I have the Icon IC736 is supposed to be good for GT40 heads when I asked about it. Thank You. For the first test, we were reusing the stock Explorer cam, so the engine didn't need any break-in time. fuel injection system . Be careful, I was once bitten by one of those reptile engine builders. You will have to address the 50 oz balance of the 5.0 engine by getting a 50 oz flywheel. Nudge us with emails, and we'll make it happen. What would be the best cam and springs to use for these heads in a 302 Windsor? That's an improvement of 22 hp over Test 2. This 1979-1995 Mustang cylinder head and camshaft guide will overview the heads and cams we offer and how they will coincide. (A starter is a motor, windshield wipers use a motor,electric windows use motors) Any one uses that terminology in my shop will be corrected once, only once. 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. $700.98. built one using a 91' HO short block with a set of AFR 165 heads, Weiand . We heated the bottle to 950 psi and hit the button at 4,500 rpm. Horse Sense: The smaller valves found in GT-40P heads improve airflow velocity. $700.98. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 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. I was thinking the same but the enforcers are $647ea now so $1400 (inc tax) is the entry price for good set of heads. I don't need tons of power to enjoy the car. The question was whether we wanted a torquey small-block or a more cammed-up rpm engine to boost peak horsepower. Adding the headers may also require a slight increase in secondary (and possibly primary) jetting to ensure the proper air-fuel ratio, but thats also an easy tuning change. All this is worth it. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. No-option stripper- I like strippers. Enter your search keyword. Mar 23, 2004. I'm new and I'm 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.

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