Car Craft mag. The combination of this cam with your intake and headers will produce a very nice street engine. 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. For both the GT40 and GT40p heads, I STRONGLY suggest upgrading the valve springs. The rest went very smoothly, and we reused the stock lifters and suffered no ulcers worrying about breaking in the 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. 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). You can have your current 28 oz rebalanced to 50. We compare the GT40s to modern cylinder heads as well as other heads from the era. Yank a motor out of the junkyard, clean it up, add a camshaft, intake, and a carburetor, and see how much power we can squeeze out of it. anyone have experience with GT40P heads on a 92 351W These are among the best of the iron Ford Windsor heads as they tend to flow much better than earlier castings. Stock 93-95 Cobra shortblock (stock cobra cam), GT40X heads, 1.7 rockers, Edelbrock Performer RPM intake, Holley 650, and longtube headers. GT40Ps have 58cc. Not when you can buy a set of Promaxx or AFR Enforcer heads for $1000, that already have decent hardware included. The longer duration created a slight loss of torque below 3,300 rpm compared to both previous cams, but beyond that mild loss of power, the bigger Voodo out-powered its smaller cousin, cranking out a peak torque of 355 lb-ft at 4,300 (a gain of 7 lb-ft over Test 2) and charging to a peak horsepower of 376 at 6,000 rpm. The GT40 & GT40P heads had a few differences that are note-worthy, the most importantly being the bump in compression. 97% Positive Feedback . Have fun, be safe, enjoy. Free shipping. He'll have to get a gear for his distributor. Because of this, your tuneup will probably need to be modified. The only failures Ive had were timing chains and a couple broken rods in a mid 80s 302 with 200,000 miles on it that got about 35 lbs of boost stuffed into it when a pop off valve I bought on ebay failed. Its increase while significant is still only about that of a decent 351 w, hi im building a nastalgic car so im not going to drag race it but it must go ok ive got a 302 windsor basicly recoed stock but i want to run tunnel rams to go with the the3am would like to put choppy cam and replace the heads any ideas would be much apprecited thankyou, What is the stock head cc of a 1992 f150 302 windsor. I am sure you have increased the bore size and possibly even the stroke a bit and spin it up pretty high in the RPM range. Choose a cylinder head before you install the pistons. The newer camshaft is designed for use with a soft bronze distributor gear, not the hardened steel gear used for older camshafts. HAD '82 GT monochromatic (red).black cloth HAVE A COMP hydraulic roller cam we found works well with this combination. 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. bmcdaniel, Feb 17, 2004 #7. v8maverick Member. Posted on May 07, 2014 by promarengine. The hardest part of swapping the cam was just getting the timing cover off and back on again. The gt40p head is considered the best OEM 302 head made. Test 2: Changed to the smaller of the two Lunati camshaftsno other changes. Sponsored. $700.98. Calculating pushrod length Over $2050 for the 165/185 renegades. check out the. As with all head installations, check piston-to-valve clearance before final startup. Richard Rowe has been writing professionally since 2007, specializing in automotive topics. He'd be the best source. 351W with GT40P heads? | Mercury Cougar Owners When you purchase through links on our site, we may earn an affiliate commission, which supports our community. #1:::Throw out all your Magazines that suggest what to do! The '00 Ford Explorers and Mercury Moutaineers were factory equipped with one of Ford's better 5.0L motors. Yea. What would be the best cam and springs to use for these heads in a 302 Windsor? The GT40P heads had a small combustion chamber ranging from 58-61cc while the GT40 heads had a 63-66cc combustion chamber. Learn how your comment data is processed. Central Coast Mustang sells GT-40P heads at a great price, making them a viable alternative in a market flooded with performance head choices. At 4,300 rpm, the torque peaked at 348 lb-ft, a solid 20-lb-ft improvement, and the Lunati continued to outperform the stock cam all the way through with a peak horsepower increase of 60 hp at 354 hp at 5,700 rpm! How to Build a Cheap Drag Racing 302 Ford Motor | It Still Runs I got rid of the carburetor and went with a F.A.S.T. Just got through porting one of my gt40p heads today. Fastest e303 5.0l's? - FourEyedPride.com well i finally did my first ever carb build, ive always been an EFI guy Black 1985 GT: 408w, in the 6's in the 1/8 mile. I have to agree, the GT40P heads flow better than the GT40 iron heads. Upgrading Fox Body Cylinder Heads - AmericanMuscle.com Both have very similar valve sizes, but the GT40P head has slightly larger combustion chambers for a small bump in compression and better flow. We did a quick search for hydraulic roller cams and landed on a COMP camshaft that looked promising. But what we were most impressed with was the solid gain in torque over the smaller Voodoo cam from 3,500 and up. Those are really good numbers. Ford 302W / 5.0L History & Specifications - The Ranger Station Application Fits 1979-95 Mustang 302/351 w/ OEM Small Block Ford Heads Eldelbrocks Air Gap intake manifold should work well with the combination. There are a couple of reasons for this suggestion. If you can find individual flanged headers like the obsolete MAC headers had, those worked really well with GT40P's. Joined: Sun Mar 15, 2009 9:31 am. With the P-heads requiring pedestal-mount rockers, we also called up Crane Cams for a set of 1.6 pedestal-mount roller rockers. As with Chevrolet's small-block engine, the aftermarket has had dozens of years to expand the range and reduce the cost of the parts they offer for this engine. The only way to really make more power is to go with a stroker kit, blower and/or heads. The Edelbrock Performer RPM is a good choice, but Holley, Weiand and Ford Motorsport also have similar offerings. Free shipping for many products! For a better experience, please enable JavaScript in your browser before proceeding. Or, you could invest in a new set of heads that would also do the same job but you can expect to spend quite a bit more money. The Fora platform includes forum software by XenForo. Actually the regular gt40's in either aluminum or iron are the good ones but the gt40p's are only a slight improvement over regular 302 heads. If you have a early 351W ie pre 76 it probably . 1986 Short block with notched pistons. That carbureted GT40P motor made 465 on th engine dyno with a .500" 239/244 camshaft, Holley 650 carb and Weiand Stealth intake. He has worked as a tractor-trailer driver and mechanic, a rigger at a fire engine factory and as a race-car driver and builder. You should be able to get away with a 150 to 200 horsepower shot later, but it's best to start out small and work up. The Fora platform includes forum software by XenForo. This is what I recommend to everyone who is doing a budget 5.0 build. Well that article just got me very ancy, I want these heads!! Yes- thank you. how much HP and torque? Test 3: Installed the larger Lunati camagain, no other changes. Going from your heads to the GT40p heads will bump your compression by about a point.so hello bottom end torque. Not to mention, they will run circles around GT40P's out of the box. Well assume it is a 5.0L with stock heads. This website is using a security service to protect itself from online attacks. 1983 Mustang G.T. A bit of info for those looking to build 300+hp 5.0L/302s Come join the discussion about performance, production numbers, VIN decoders, modifications, troubleshooting, power adders, DIY tutorials, and more! Vehicle: 1972 2 door 302 maverick, 1986 5.0 stang gt convertible,66 mustang coupe, HEMI ram. 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. A good port job can set you back another $500-$1,000. If you're not a header kind of guy, the repro 289 HIPO manifolds bolt up to the GT40P heads with plenty of spark plug room. For a better experience, please enable JavaScript in your browser before proceeding. The 302 uses smaller 7/16" head bolts and your "P" heads may or may not require the step washers. Required fields are marked *. 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. JavaScript is disabled. GT40P heads, what kind of performance do they give? I have a 5.0 from a 1992 Mustang in my 65. Location: Re: Stock Ford 351W 4bbl dyno numbers. 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. 351W D0OE-C heads better than GT40P\'s? - Ford Muscle Cars Tech Forum Motor is going into a Ranger. Holten tells us removing the fan is worth two-tenths in itself, which tells us the fan soaks up roughly 20 hp. JavaScript is disabled. people can stop saying that adding aftermarket cam with stock heads is a waste of time. We need a build on a 400+ hp 302/6 build. . Yeah, out of a bolt on upgrade, you'd probably be looking at 260-280rwhp ish with supporting mods. i've got a short block started, and i recently came across a set of GT40P heads for FREE ( love family members). 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. However there are plenty of factory heads that with the help of an experienced machine shop can be great. Advanced: Daily Deals; Help & Contact; Sell; My eBay Expand My . If you're going to use the stock 289 heads, install 1.84-inch intake valves, then port the intake and exhaust; these mods will net you about 185 cfm of intake port flow at 0.50 lift. Compare. Tim's junkyard refugee survived the beating and we had a bitchin' story. The MPH was there to run a little better but the local track is about terrible. 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. P-heads have a smaller combustion chamber at 59cc, which will bump the compression ratio up on an otherwise-stock 5.0 engine. Cant wait to try um out. 1985 Mustang GT Mild 331 4bbl 5 spd, 1985 SEFI LTD LX AOD. The engine never huffed oil out of the breathers, and the spark plugs all looked excellent. As you might expect with more duration, the idle quality dropped significantly but was still able to make 11.5 inches of vacuum at 980 rpm. However, stepping up in the performance head market will set you back more than $1,200 for a decent pair of aluminum castings--and that's straight out of the box, with no porting. They suffered from poor aftermarket support up until about 15 years ago when it really came on strong. ford 302 sbf gt40p v8 cast iron complete cylinder head and head bolts and head gasket set. But dont think that adding a bigger camshaft will make more power. Since the engine is nearly stock, we would want to choose a relatively mild camshaft with somewhat more lift and duration than stock, but again not going too aggressive. Mustang Cylinder Head & Camshaft Guide (79-95) - LMR SBF FORD Aluminum Cylinder Heads 302 /351w 190cc 62cc 2.02 /1.60 For ROLLER CAM. Calculated compression to 9.8:1. 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. Gt40 heads/intake from a jy explorer, leave the . 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. .. i would not buy valves unless you need them amd would not switch to studs with these heads for your low hp . 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. 331/347 stroker w/gt40p's, waste?Hp?cost involved? - Maverick $700.98. GT40P heads? how hard to put on? how much HP and torque? All Ford Mustangs | Model Specific Forums, GT-40P Heads - 5.0 Mustang & Super Fords Magazine. fuel injection system . Ford GT40P 302 5.0L 4 Bar Cylinder Head Assembly Pair w/ 1/2" Head Bolt Hole. They were located in Tahachapi CA, and were sold with upgraded springs for $650.00, back in 2002-2003 ish. Buy the lifters for peace of mind now and hopefully for the duration. As noted, this is looking like hes building a 351 Lightning truck motor, which is a good way to go. JavaScript is disabled. REMANUFACTURED FORD 302 5.0 COBRA GT40 CYLINDER HEADS | What's New The heads also required some machine work, including screw-in studs, guideplates, and widening the spring pockets for bigger valvesprings. The GT40P heads flow a lot better than stock 351 heads. Ford GT40P 302 5.0L 4 Bar Cylinder Head Assembly Pair w/ 1/2" Head Bolt Hole. Yep my **** is coming apart again Isnt life great! You need to check. GT40P Heads how much hp from them. - StangNet 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. Here is the lowdown on exhaust manifolds and VALVE SPRINGS. . A forum community dedicated to vintage Ford Mustang owners and enthusiasts. They also have emissions legal heads as well. An aggressive cam will wake it up a bit. Dyno results GT40P heads | Vintage Mustang Forums Depends on the budget. PTP Engineering front suspension and 25540R17s all around. Actually, making around 240 to 250 hp with a near-stock Windsor 302 will feel pretty good. 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. AFR 165 Heads | Have options for pedestal mounted rocker arms or stud mounted rocker arms. Start with any 302 block, but try to find one from 1985 and up since it will already have provisions for a roller camshaft.
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