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 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. 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'm also have the regular GT40 heads on my current build. The heads also required some machine work, including screw-in studs, guideplates, and widening the spring pockets for bigger valvesprings. The engine was only rated at 215 hp, but it at least had 9.0:1 compression. You can use the stock roller lifters with any size cam you want. I'm wondering how these heads will interact with the paxton 1220 sl supercharger I'm trying to put on. ***Most important is theStupid question is the one that was never asked!*** This is just a quick overview of the changes that need to be done. A good port job can set you back another $500-$1,000. Early Windsors tend to have fairly restrictive exhaust manifolds, making the addition of a set of headers that much more efficient. . Every thing he tells you on this site is true. 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. If they are cheap enough, take them anyway. 1979 Indy 500 Pace Car. 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. JavaScript is disabled. Gasoline/Diesel all makes on earth & still doing it today with great pride.Feel free to contact me anytime. 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. Dec 8, 2011. FORD GT40p 4 BAR HEADS IN GOOD CONDITION . 1986 Short block with notched pistons. This combination should be good for about 400 horsepower and as much as 500 if you opt to use the stronger aftermarket pistons. '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 These are some of the best castings Ford ever produced for this engine, and are still fairly cheap and available used. JavaScript is disabled. The action you just performed triggered the security solution. We also added a veteran Ford magnetic pickup distributor and used it to drive an MSD ignition system. This will keep you from dropping your overall static compression ratio and losing power. GT40Ps have 58cc. Using the manufacturer recommended springs for your camshaft are a safe bet. Stock heads with a fresh 3-angle valve job, shorty headers, T5, 4.10s, stock Explorer intake and stock '88 GT short block with 140,000 miles on it and an E cam in it. We did the installation at Holten's place of employment, Motorworks, in Longwood, Florida. Just make sure it is a roller cam. The GT40P heads flow a lot better than stock 351 heads. Calculating pushrod length Stock valve sizes? Holten tells us removing the fan is worth two-tenths in itself, which tells us the fan soaks up roughly 20 hp. Well also assume that this engine is running stock exhaust manifolds. This is what I recommend to everyone who is doing a budget 5.0 build. 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. When combined with modern power-makers, such as nitrous, the 302 is more than capable of producing 400+ horsepower for little more than the cost of a stock engine rebuild. Last Edit: January 18, 2015, 12:05:31 pm by businesstrader Logged shaunp. i've got a short block started, and i recently came across a set of GT40P heads for FREE ( love family members). Ford GT40P 302 5.0L 4 Bar Cylinder Head Assembly Pair w/ 1/2" Head Bolt Hole. K.S. 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. At the time, I was still running smog equipment in a 1994 Mustang GT, so I had them drill the back of the heads for the thermactor connection. I am very happy too. Motor is going into a Ranger. $169.50. It's a classic move we've pulled off many times. 1.7 shaft rockers and beehives. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 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. 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. Application Fits 1979-95 Mustang 302/351 w/ OEM Small Block Ford Heads document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. Gt40 heads/intake from a jy explorer, leave the . 87-93-95 Ford Mustang GT40P Engine Cylinder Heads REBUILT 302 351 GT40 SBF OEM | eBay Motors, Parts & Accessories, Car & Truck Parts & Accessories | eBay! LOW-BUCK 302 FORD HEAD UPGRADE Richard Holdener 239K subscribers 189K views 2 years ago WESTECH PERFORMANCE GROUP WHAT'S IT WORTH? There are caveats to this plan, however. 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. 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. Aside from the cost of the nitrous itself, this setup should cost you little more than a stock rebuild using all brand new parts. This will follow the guideline of a 1.6 rocker baseline and factory bottom end 79-95 related 5.0L Mustangs only. 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. #3::: Do your homework,get quality parts,dont skimp. I bought a crate 302 from Downs Ford a few years ago that was producing 320 hp. E303 Cam advanced 4 degrees. I have a 432 HP non Hi Po 289 I built. 68stang351 Founding Member May 16, 2002 850 ported GT-40p, ported cobra intake, 65mm BBK, e-cam with 1.7s, longtubes, off-road x-pipe with flowmasters dumped. If you go with a diffrent cam, make sure you change springs, The Trick Flow kit comes with everything for around $130. I have a 5.0 from a 1992 Mustang in my 65. Despite adding 30 degrees of intake duration, this cam improved torque throughout the entire test from 3,000 rpm on up. 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 . A forum community dedicated to Ford Mustang owners and enthusiasts. Common sense would suggest that with the heavy lifting complete and the old cam removed, by not installing the new roller lifters along with the camshaft could be asking for the possibility of trouble just a few thousand miles down the road. This time around, we chose a shining example of this junkyard art form. If this is beyond your technical ability, you could ask a local machine shop to perform the modifications. You can have your current 28 oz rebalanced to 50. Once you get into the FoMoCo aftermarket aluminum GT40s though, all bets are off. JEGS High Performance. 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). built one using a 91' HO short block with a set of AFR 165 heads, Weiand . I was thinking the same but the enforcers are $647ea now so $1400 (inc tax) is the entry price for good set of heads. that is a healthy budget deal. Just got through porting one of my gt40p heads today. Best of all, no machining is required to install these on your stock cast iron heads! The factory heads have a boss for the exhaust valve that restricts flow through the exhaust port. *** 65 Mustang 351C 4v, AOD, 4.11 gears *** 66 Galaxie convert big block. Someone does make the Tri-Y's headers for the early Mustangs using the "P" heads. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. For all of us interested in Gt40p heads. He'll have to get a gear for his distributor. Sponsored. This is not a criticism but instead consider it to be more of a heads-up. 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. Assemble the rotating assembly with a stock 5.0L crankshaft, a set of 5.0L rods and the specified pistons with stock-type rings. You didnt mention which cam you had in mind. I view the GT40P heads similar to Granada brakes. 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. hole size 302 is 7/16 and 351 is 1/2 You could run a thinner head gasket as well. You can have your current 28 oz rebalanced to 50. Cloudflare Ray ID: 7a2e2d95dedea1e4 i have a 302 engine from a 1977 granada and i am wondering if gt40p heads from an explorer will fit on this motor. A forum community dedicated to Ford Mustang owners and enthusiasts. Not to mention, they will run circles around GT40P's out of the box. Central Coast Mustang sells GT-40P heads at a great price, making them a viable alternative in a market flooded with performance head choices. Ha! If you smooth out the bowls and exhaust ports and gasket match the intakes they should flow decent.

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