302 with gt40p heads horsepower

302 with gt40p heads horsepower

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. Most of them are aware of what changes need to be completed. Where they differ is the combustion chamber size. Never not once have I ever seen a SBF rod bolt create a failure. 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. GT 500; Posts: 8496; Location: Brisbane . 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 got rid of the carburetor and went with a F.A.S.T. This website is using a security service to protect itself from online attacks. 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. Yeah, except those. a) ain't early and b) aren't 289 heads. The headers will improve this airflow throughout the entire rpm rangeadding more torque and horsepower. Not *as* good as the GT40p heads, but I'd prefer to not have to worry about exhaust fitment issues, or have a narrow range of what I can work with. If you're running a stock cam, 1.7 rockers will work perfectly. Be careful, I was once bitten by one of those reptile engine builders. Most of the time, GT-40 heads are worth a good 20-40hp over stock heads. For 2018, the Coyote makes 460 hp. This combination should be good for about 400 horsepower and as much as 500 if you opt to use the stronger aftermarket pistons. This will keep you from dropping your overall static compression ratio and losing power. The factory heads have a boss for the exhaust valve that restricts flow through the exhaust port. The reason for this is that we're actually replacing mildly worked E7TE heads. As with all head installations, check piston-to-valve clearance before final startup. Your IP: The car weighs #2835 with driver. I don't need tons of power to enjoy the car. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Long tube headers are a terrific idea, but you need to open up the exhaust side. made more power everytwhere and 40 hp is respectable. the springs are new stock oem ford. I had a set of 69 302 heads I ran for a while . With. Through Central Coast you can have the heads fully prepped for your combination. I got a GT40P off the assembly line years ago. In review, we rescued a used 5.0L Ford from the boneyard, ported the heads, added a cam, carburetor, intake manifold, and headers, and pulled an amazing 376 hp out of the mix. Horse Sense: The smaller valves found in GT-40P heads improve airflow velocity. 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. Well that article just got me very ancy, I want these heads!! 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. Those are really good numbers. Ford offered a performance head that was a stock part on 1993-1995 Mustang Cobra models and pre- 1997-1/2 Ford Explorers and Mercury Mountaineers equipped with the 5.0 L engine called the GT-40 head (casting ID F3ZE-AA). In mid-1997, the Explorer and Mountaineer 5.0 L heads were revised and renamed . Going from your heads to the GT40p heads will bump your compression by about a point.so hello bottom end torque. GT40P heads, what kind of performance do they give? For a better experience, please enable JavaScript in your browser before proceeding. . 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. 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. Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) - GT40P heads? 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. Building a 302-inch small-block to produce 400 hp is really no big deal, but doing. Motor is going into a Ranger. The rest went very smoothly, and we reused the stock lifters and suffered no ulcers worrying about breaking in the cam. Ford GT40P 302 5.0L 4 Bar Cylinder Head Assembly Pair w/ 1/2" Head Bolt Hole. There are too many variables to add to this regarding aftermarket stroker kits or components. Install a set of 1.7:1 roller-tipped rocker arms on the heads. Keep in mind that swapping camshafts is a fairly extensive effort. . And have discovered something that I dont think anyone else knows. Step 2. 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. You will have to address the 50 oz balance of the 5.0 engine by getting a 50 oz flywheel. Obviously, tuneups will vary. 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. That's a good combo in my book. 68 XR7 & 68 M-100. bmcdaniel, Feb 17, 2004 #7. v8maverick Member. We heated the bottle to 950 psi and hit the button at 4,500 rpm. The Fora platform includes forum software by XenForo. I was thinking the same but the enforcers are $647ea now so $1400 (inc tax) is the entry price for good set of heads. 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. If you smooth out the bowls and exhaust ports and gasket match the intakes they should flow decent. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. We've already been motivated to put this engine in a buddy's Mustang. We also added a veteran Ford magnetic pickup distributor and used it to drive an MSD ignition system. JUNKYARD GT40P HEADS-ADD 30+ HP TO YOUR 5.0L (FOR FREE?) Because of this, your tuneup will probably need to be modified. As noted, this is looking like hes building a 351 Lightning truck motor, which is a good way to go. Dennis Hilliard of Central Coast says we can expect to gain three-tenths in the quarter-mile. The heads that were used were also old C8 casting with 58cc chambers. If you can find individual flanged headers like the obsolete MAC headers had, those worked really well with GT40P's. thats after 3 hours of idling/midrange hits to tune the idle and part throttle . You will have to get special headers to fit these heads since the spark plugs are angled differently than normal 5.0 heads. The spark plug issue is almost a non-issue. 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. Good Luck. 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. Actually, making around 240 to 250 hp with a near-stock Windsor 302 will feel pretty good. Per a UEM tech support email I have the Icon IC736 is supposed to be good for GT40 heads when I asked about it. However I think the opportunity window is slowly closing. SB Ford GT40P Drop In Valve Springs Kit, Hyd Roller w/ Stock Cam, .450" lift and below. The question was whether we wanted a torquey small-block or a more cammed-up rpm engine to boost peak horsepower. Finally, we exchanged the Explorer's EFI manifold (which is a pretty good manifold in its own right) for an Edelbrock Performer RPM Air Gap intake and a Holley 750-cfm HP-style carburetor. Since 2003, Jeff has held various positions at Car Craft (including editor), has written books on small block Chevy performance, and even cultivated an impressive collection of 1965 and 1966 Chevelles. Holten tells us removing the fan is worth two-tenths in itself, which tells us the fan soaks up roughly 20 hp. Holten's best time is a 12.63 at 105.9 mph, and if we gain the desired result he will be right in the thick of things in Trophy Stock competition. Different years can have different combustion chamber sizes but ffor the most part there will be no performance increases by going with 302 heads. He'll have to get a gear for his distributor. Those heads were unported and had stock valve sizes! I have to agree, the GT40P heads flow better than the GT40 iron heads. Performance & security by Cloudflare. We are offering a pair of original Ford Cobra 5.0 GT40 cast iron cylinder heads. You will have to get special headers to fit these heads since the spark plugs are angled differently than normal 5.0 heads. Not sure how they would mate up to your existing exhuast, but otherwise they should work. The only one that's close, is #7. This is just a quick overview of the changes that need to be done. I've got gt40p heads for it I'll be running, and can't afford better . Because its all been done time after time after. Calculating pushrod length Is asking advice for a fairly common situation involving parts with mandatory compatibility between the two for performance and longevity. All costing in the end at least another $2k. i'd love to use these heads,. I'm using the Trick Flow stage 1 cam with 1.7 roller rockers. The '00 Ford Explorers and Mercury Moutaineers were factory equipped with one of Ford's better 5.0L motors. Features hardened 4140 Chromoly retainers, valve locks, spring shims, a spring height gauge, valve seals, and instructions. - I have a 1989 f150 with a 302 5 spd. Weiand 7515 xcellerator intake. 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. Build Thread 1965 Fastback Project "Racesteed". You can have your current 28 oz rebalanced to 50. On the power side, we selected 400 hp as an impressive but reasonable output for our small-block 5.0L Ford. We were cruising the 'yard a while back and located a 2000 Ford Explorer with an EFI 5.0L V-8 engine. As a matter of fact, Central Coast has an '89 coupe with GT-40P heads that has run a best of 11.98 in the quarter-mile. The "P" heads flow better. This will follow the guideline of a 1.6 rocker baseline and factory bottom end 79-95 related 5.0L Mustangs only. I am very happy too. This is what I recommend to everyone who is doing a budget 5.0 build. There is a better way. Torque on the other hand isnt something to write home about. I added a link to it. I have heard this rod bolt weakness myth for years but have yet to have a single problem with them in any of the SBF engines I have pounded on for the last 30 years and there have been lots of them. I have a 5.0 from a 1992 Mustang in my 65. Free shipping. 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. Have fun, be safe, enjoy. All this is worth it. Jeff Smith has had a passion for cars since he began working at his grandfather's gas station at the age 10. This one added another 10 degrees of duration over the smaller Voodoo cam, along with 0.020 inch more intake valve lift. These are a great head but do need some machining mods to make they really work well. You could run a thinner head gasket as well. 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. Just make sure it is a roller cam. Along with the heads, we used MAC headers for GT-40P heads. Enter your search keyword. Over $2050 for the 165/185 renegades. You just want to keep it out of detonation. Car Craft mag. 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. This is needed for the steel roller cam. that is a healthy budget deal. HAD '82 GT monochromatic (red).black cloth HAVE Sponsored. I love my setup and it is very strong engine. 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. These heads have been remanufactured using refaced reclaimed Factory Valves. *** 65 Mustang 351C 4v, AOD, 4.11 gears *** 66 Galaxie convert big block. I got lucky and found a complete Explorer GT40P engine online. That's more than enough to feed a power-brake booster. The Fora platform includes forum software by XenForo. It's a classic move we've pulled off many times. A forum community dedicated to Ford performance owners and enthusiasts. I can tell you that with my 9.503 block, 22cc dished pistons and 64cc heads, I'm at 9.5:1 compression. For all of us interested in Gt40p heads. We didn't increase the valve size, although we did have to add Manley valves to get the proper spring-installed height. If you have a early 351W ie pre 76 it probably . Learn how your comment data is processed. Would have liked to see a comparison done on the same short block using a set of decently-ported early non-Thermactor iron heads Tracy Blackford, 65 Mustang FB, 331 built with 289 H beam rods and 383W piston, 282S cam, self ported '70 351w heads, Dougs Tri-Y headers. We compare the GT40s to modern cylinder heads as well as other heads from the era. After graduating from Iowa State University with a journalism degree in 1978, he combined his two passions: cars and writing. The entire front accessory drive and timing chain cover must be removed, along with the distributor and intake manifold. Using the manufacturer recommended springs for your camshaft are a safe bet. 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. 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. The later model distributors had a different diameter shaft than the earlier ones. GT40, GT40P, would be great factory heads. How much HP and torque do you think I. check out the. Nudge us with emails, and we'll make it happen. After a couple grand you have a killer set of heads, but there's got to be a less-expensive way of making horsepower. Pride is built, in your garage, with your two hands. Save narve00 document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. 950.00 us a set and will ship . These are some of the pictures I have showing the Explorer manifolds. It's an 86 roller 5.0 engine that had a recent rebuild sometime in the past with keith black pistons, otherwise stock. Once you get into the FoMoCo aftermarket aluminum GT40s though, all bets are off. 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. #1:::Throw out all your Magazines that suggest what to do! Mac and Ford Motorsport both make a GT40P spacific header. A trip to Orlando Speed World provided us with updated quarter-mile times. Stock 1989 5.0L HO pistons will work if you can find them. 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. PTP Engineering front suspension and 25540R17s all around. They almost seem like flywheel numbers rather than RWHP numbers. Thanks. Not sure about that but got some pictures of the cast iron explorer manifolds on a 302. 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. 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 solid 300-325 hp should be plenty and that's with good drivability and reliability as well. For a better experience, please enable JavaScript in your browser before proceeding. You can use the stock roller lifters with any size cam you want. A forum community dedicated to Ford Mustang owners and enthusiasts. The GT40 heads are a bit more versatile, working with the 5.4 and 6.8, while the GT40P (Explorer/Mountaineer) heads will only work on the 6.8 due to an interference issue. 1985 Mustang GT Mild 331 4bbl 5 spd, 1985 SEFI LTD LX AOD.

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