302 with gt40p heads horsepower

Well offer one as an example. The GT40P heads had a small combustion chamber ranging from 58-61cc while the GT40 heads had a 63-66cc combustion chamber. Step 1. Most of the time, GT-40 heads are worth a good 20-40hp over stock heads. 99 Explorer engine (302) with GT40P heads - Ford Muscle Cars Tech Forum 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. Ill do springs and a moderate cam and go for a good, dependable power plant. Not bad for off the shelf parts and a stock shortblock. 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. 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. You might even say its like flogging a dead horse without any animals actually being injured during my moments of sarcasm. With. I've got gt40p heads for it I'll be running, and can't afford better . There are too many variables to add to this regarding aftermarket stroker kits or components. Don't let the fact that the iron GT40 heads have a larger exhaust valve fool you. 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. The multiple-layer steel construction allows the gasket to conform to movement between the cylinder head and block while maintaining a good seal. 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). Consider having the head's intake ports matched to the intake manifold gasket. GT40 Heads On A 289? | Ford Muscle Cars Tech Forum This will keep you from dropping your overall static compression ratio and losing power. According to his data and verified dyno tests with an EFI 302, you can go above this level if you port the stock, lower intake manifold, or upgrade it altogether. 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. ***Most important is theStupid question is the one that was never asked!*** Commonly referred to as Explorer heads, GT-40P iron castings are found on current 5.0-equipped Explorers. Stock valve sizes? 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. Check my post above. The GT40P heads flow a lot better than stock 351 heads. What would be the best cam and springs to use for these heads in a 302 Windsor? 302 with GT40 heads | Ford Mustang Forums A bit of info for those looking to build 300+hp 5.0L/302s And remember ENGINES have been being built/rebuilt/modified for years. I need that part number too! I added a link to it. Pride is built, in your garage, with your two hands. They almost seem like flywheel numbers rather than RWHP numbers. GT40 vs GT40P: Who has Smaller Chamber Volume ! More compression Get 500 Horsepower from a Junkyard Ford Explorer 302 - MotorTrend this is the price for one head. When I purchased my "brand new" set of GT40P's, I bought them from an Mustang specific machine shop that used to exist called Central Coast Mustang. Sponsored. Now he serves as a regular contributor to OnAllCylinders. (Image/Harrison Creamery). Building 400hp Into A 5.0L Small-Block Engine - MotorTrend There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. 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. A forum community dedicated to Ford Mustang owners and enthusiasts. The cost of a new set of standard replacement roller lifters is very affordable at major retailers like Summit. - I have a 1989 f150 with a 302 5 spd. This one added another 10 degrees of duration over the smaller Voodoo cam, along with 0.020 inch more intake valve lift. K.S. Obviously, tuneups will vary. I have a 5.0 from a 1992 Mustang in my 65. Test 2: Changed to the smaller of the two Lunati camshaftsno other changes. ported GT-40p, ported cobra intake, 65mm BBK, e-cam with 1.7s, longtubes, off-road x-pipe with flowmasters dumped. Gt40/gt40p Heads On A 351w Questions - StangNet That's more than enough to feed a power-brake booster. You need to check. Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) - GT40P heads? Where they differ is the combustion chamber size. GT40P heads, what kind of performance do they give? Those are really good numbers. 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! This modification will help your late-model GT40P heads work better with the old-school carbureted intake setup. Joined: Sun Mar 15, 2009 9:31 am. Scorpion 1.6 roller rockers. The GT40P heads flow a lot better than stock 351 heads. These are a great head but do need some machining mods to make they really work well. You didnt mention what camshaft you would be choosing or exactly which 5.0L Ford Windsor engine you are working with. Well that article just got me very ancy, I want these heads!! Mac and Ford Motorsport both make a GT40P spacific header. . If you dont feel comfortable doing this higher a pro. 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. 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. These are some of the pictures I have showing the Explorer manifolds. 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. You gave me the info I was looking for, and I really do appreciate it. Assorted screwdrivers, pliers and vise-grips. 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. REMANUFACTURED FORD 302 5.0 COBRA GT40 CYLINDER HEADS. That's a good combo in my book. Within a few hours of his discovery, the engine was sitting in the back of his truck on its way to a new home. Mustang Cylinder Head & Camshaft Guide (79-95) - LMR Once the headers are in place, then you can consider if you still want more power. check out the. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. check out the. 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 had a set of 69 302 heads I ran for a while . Keep in mind that swapping camshafts is a fairly extensive effort. We did a quick search for hydraulic roller cams and landed on a COMP camshaft that looked promising. 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. 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. Cast iron GT40Ps as cast flow better than non-Ps due to revised plug location/angle. That said there are some better aftermarket options for heads also. Along with the heads, we used MAC headers for GT-40P heads. This needs to be removed and different exhaust valves, retainers, and valve springs added to turn this into a decent street head. 302 heads on 351w | ClassicBroncos.com Forum Sponsored. 402 HP NA from a HI PO 289 isnt that mysterious of a feat to accomplish with todays SBF Aftermarket parts availability. This is an older thread, you may not receive a response, and could be reviving an old thread. Required fields are marked *. When compared to the new generation of performance engines on the market today like the 5.0L DOHC Coyote engine, your engine will not come close. Someone does make the Tri-Y's headers for the early Mustangs using the "P" heads. Ford Explorer Mountaineer 5.0 Ohv Iron 302 Sbf 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. 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. Maybe I'll think about a cam swap? 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. A bone stock 2bbl early 351w with stock replacement forged pistons (9.0 compression) and dyno headers made 211 Hp . $169.50. JUNKYARD GT40P HEADS-ADD 30+ HP TO YOUR 5.0L (FOR FREE?) 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. In a lightweight Fox or early Mustang with a five-speed behind it, this would be a great little street engine. You will have to address the 50 oz balance of the 5.0 engine by getting a 50 oz flywheel. For 2018, the Coyote makes 460 hp. What Cam and Springs to Use for GT40 Heads The Edelbrock Performer RPM is a good choice, but Holley, Weiand and Ford Motorsport also have similar offerings. For a better experience, please enable JavaScript in your browser before proceeding. AFR 165cc 58cc Heads. Stock 1989 5.0L HO pistons will work if you can find them. I have a 302 Windsor V8 EFI engine that I converted to a 600 cfm carburetor with a Street Warrior intake manifold. 68stang351 Founding Member May 16, 2002 850 It's a classic move we've pulled off many times. A good port job can set you back another $500-$1,000. Theres many options available for a little more power. Nice to see actual dyno results instead of "butt dyno" guesses. Its always refreshing to see a FORD getting a little face time in your column, even if its a tired 302 with no great expectations of setting the world on fire when the dust settles. hole size 302 is 7/16 and 351 is 1/2 Learn how your comment data is processed.

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