This 1979-1995 Mustang cylinder head and camshaft guide will overview the heads and cams we offer and how they will coincide. We've seen what happens from previous Ford experience when power levels above 500 hp tend to either pop head gaskets or saw blocks in half. The multiple-layer steel construction allows the gasket to conform to movement between the cylinder head and block while maintaining a good seal. Just make sure it is a roller cam. 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. The GT40P heads flow a lot better than stock 351 heads. Horse Sense: The smaller valves found in GT-40P heads improve airflow velocity. Hey all, I'm working on building a 302 with my gt40p heads. The 302 uses smaller 7/16" head bolts and your "P" heads may or may not require the step washers. Be careful, I was once bitten by one of those reptile engine builders. 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. If you dont feel comfortable doing this higher a pro. That's more than enough to feed a power-brake booster. With the GT-40P heads you will need to back off the timing a couple degrees and bump up the fuel pressure. Related Resources Mustang Generation Nicknames: What Do They Mean? These are some of the pictures I have showing the Explorer manifolds. 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. Manual trans. 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. Then why did you port the heads and how do you know if you made an improvement. There are literally a dozen or so camshaft companies that offer a mild hydraulic roller cam for a 5.0L Ford. Nice to see actual dyno results instead of "butt dyno" guesses. All manufactured using advanced CNC technology for the extreme durability and precision required of the modern canted valve Ford Small Block at power levels around the 1000 mark reached during recent competitions at the EMC and at the strip. 1996-2001 Ford Explorer 5.0L V8 Specifications Calculated compression to 9.8:1. But the part about a cam replacement possibly being a labor intensive undertaking is correct. This is what I recommend to everyone who is doing a budget 5.0 build. (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. 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). I plan on running a AFM b31 cam too which has relatively small duration for the intake valve. I'll save the effort and lighten my front end by 50# with aluminum. Because of this, your tuneup will probably need to be modified. I have a 432 HP non Hi Po 289 I built. Gasoline/Diesel all makes on earth & still doing it today with great pride.Feel free to contact me anytime. GT40 Heads On A 289? | Ford Muscle Cars Tech Forum Buy the lifters for peace of mind now and hopefully for the duration. I went to a couple in Tucson and almost all the Ford vehicles that came with a 5.0 had the heads missing. thats after 3 hours of idling/midrange hits to tune the idle and part throttle . 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. 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. We also discovered some issues with the GT40P heads that required changes, so we added valves from Manley that eliminated the exhaust-valve rotators and allowed us to set the proper valvespring installed height. $700.98. 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. I have a very good running stock 1981 302 in a F100 short box. Well offer one as an example. Took me 7 hours to do one head.but they cleaned up real nice. The fix: basic power upgrades for a sluggish 302 I love my setup and it is very strong engine. *** 65 Mustang 351C 4v, AOD, 4.11 gears *** 66 Galaxie convert big block. If you're running a stock cam, 1.7 rockers will work perfectly. 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. This modification will help your late-model GT40P heads work better with the old-school carbureted intake setup. Ford Factory 5.0 Performance Cylinder Heads. That's a 40 per cent increase in power from a simple head and cam swap, and one seriously happy Mustang owner! This engine will be good for your 65 Mustang. They were located in Tahachapi CA, and were sold with upgraded springs for $650.00, back in 2002-2003 ish. They are more expensive than standard head gaskets, but they also do the job and are worth the additional money. Plus you will need to drill all the head bolt holes out as the 351W uses larger head bolts. Without changing the stock pistons. What would be the best cam and springs to use for these heads in a 302 Windsor? The HP DIFF column on the far right lists the horsepower difference between Test 1 and Test 3. We did a quick search for hydraulic roller cams and landed on a COMP camshaft that looked promising. The Edelbrock Performer RPM is a good choice, but Holley, Weiand and Ford Motorsport also have similar offerings. Do you guys have part numbers for the spring kits? After we installed the heads and with the fan off, he ran a 12.46 at 107.9. Start with any 302 block, but try to find one from 1985 and up since it will already have provisions for a roller camshaft. The GT40 heads have thermactor holes built in to connect to the EGR/smog equipment whereas the GT40P heads use an external EGR connective system. You will have to address the 50 oz balance of the 5.0 engine by getting a 50 oz flywheel. 351W D0OE-C heads better than GT40P\'s? - Ford Muscle Cars Tech Forum Boy, were we surprised with the results. Works on all factory cast iron E7, GT40, and GT40P cylinder heads! people can stop saying that adding aftermarket cam with stock heads is a waste of time. Just got through porting one of my gt40p heads today. Learn how your comment data is processed. 87-93-95 Ford Mustang GT40P Engine Cylinder Heads REBUILT 302 351 GT40 SBF OEM | eBay Motors, Parts & Accessories, Car & Truck Parts & Accessories | eBay! Maybe I'll think about a cam swap? If there isnt room without disassembling half the front clip on the car, then it might be easier to remove the engine and do the conversion that way. Cast iron GT40Ps as cast flow better than non-Ps due to revised plug location/angle. $139.99. The car weighs #2835 with driver. The results were a major increase in power throughout the entire rev range, with an increase of 60hp at 4500rpm through to a peak of 279hp at 5800rpm. JavaScript is disabled. 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. That's fantastic for the minimal investment we made. - I have a 1989 f150 with a 302 5 spd. 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. Come join the discussion about performance, builds, modifications, reviews, engine swaps, classifieds, troubleshooting, maintenance, and more! Stock 93-95 Cobra shortblock (stock cobra cam), GT40X heads, 1.7 rockers, Edelbrock Performer RPM intake, Holley 650, and longtube headers. He'd be the best source. 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. Seriously though if you're not planning on an all-out attack for HP, I'd consider a forged piston out of Probe's SRS line-up. REMANUFACTURED FORD 302 5.0 COBRA GT40 CYLINDER HEADS | What's New Never not once have I ever seen a SBF rod bolt create a failure. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Install a set of 1.7:1 roller-tipped rocker arms on the heads. That's a good combo in my book. A COMP hydraulic roller cam we found works well with this combination. Not bad for off the shelf parts and a stock shortblock. I may do some port matching and a little cleanup, otherwise just a set of springs and cam and see what I have. If you know him, ask him. Not when you can buy a set of Promaxx or AFR Enforcer heads for $1000, that already have decent hardware included. #3::: Do your homework,get quality parts,dont skimp. The reason for this is that we're actually replacing mildly worked E7TE heads. Compare. They also have emissions legal heads as well. many thanks to all you eco-hippies giving me dirty looks and helping me feel llike an overall badass rebel. 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? GT 500; Posts: 8496; Location: Brisbane . Building 400hp Into A 5.0L Small-Block Engine - MotorTrend This combination should be good for about 400 horsepower and as much as 500 if you opt to use the stronger aftermarket pistons.
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