302 with gt40p heads horsepower

Stock 93-95 Cobra shortblock (stock cobra cam), GT40X heads, 1.7 rockers, Edelbrock Performer RPM intake, Holley 650, and longtube headers. Again, assuming this is a nearly stock 5.0L with stock heads, the Weiand Street Warrior dual plane intake and 600 cfm carburetor, its important to not become overly aggressive and choose a big camshaft. I am working on a set of iron GT40s hoping it goes faster. Limited header choice is certainly a challenge. Even with a stock Mustang 5.0 cam makes good power. 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. 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. Thanks. If I get different urges later, Ill pursue those then. For a better experience, please enable JavaScript in your browser before proceeding. Can anyone give me a little feedback about a '99 Explorer 5.0, and tell me if it's my answer. I added a link to it. 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. You will have to get special headers to fit these heads since the spark plugs are angled differently than normal 5.0 heads. On the power side, we selected 400 hp as an impressive but reasonable output for our small-block 5.0L Ford. I've not seen a set of longtubes that have an issue with GT40P's, either. 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. The dyno recorded a peak horsepower reading of 489 hp, but the air/fuel ratio was slightly on the rich side at 11.5:1, so we increased the nitrous jet to a 61 and hit the button again. We also added an Edelbrock Performer RPM dual-plane intake and a set of 158-inch headers with no mufflers. These are some of the best castings Ford ever produced for this engine, and are still fairly cheap and available used. The heads that were used were also old C8 casting with 58cc chambers. That's fantastic for the minimal investment we made. Purchase any used aftermarket manifold for the 302 that is designed to function in the 3,500 to 6,500 power band. I need that part number too! A COMP hydraulic roller cam we found works well with this combination. 1.7 shaft rockers and beehives. The entire front accessory drive and timing chain cover must be removed, along with the distributor and intake manifold. 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. *** 65 Mustang 351C 4v, AOD, 4.11 gears *** 66 Galaxie convert big block. (its not their engine) I'm using the Trick Flow stage 1 cam with 1.7 roller rockers. check out the. We did the installation at Holten's place of employment, Motorworks, in Longwood, Florida. A trip to Orlando Speed World provided us with updated quarter-mile times. This is a function of the somewhat wider lobe-separation angle of 112 degrees. Click to reveal FULL DYNO RESULTS. I have a 5.0 from a 1992 Mustang in my 65. This will follow the guideline of a 1.6 rocker baseline and factory bottom end 79-95 related 5.0L Mustangs only. Choose a cylinder head before you install the pistons. The HP DIFF column on the far right lists the horsepower difference between Test 1 and Test 3. Actually, making around 240 to 250 hp with a near-stock Windsor 302 will feel pretty good. In less than an hour, we were ready to test. In mid-1997, the Explorer and Mountaineer 5.0 L heads were revised and renamed . Dennis Hilliard of Central Coast says we can expect to gain three-tenths in the quarter-mile. That's more than enough to feed a power-brake booster. The heads got a 3 angle valve job, new valves from speed-pro and all the valve train was from crane that matched the current hydraulic cam. Assorted screwdrivers, pliers and vise-grips. You can have your current 28 oz rebalanced to 50. Because its all been done time after time after. 1983 Mustang G.T. I'm also have the regular GT40 heads on my current build. Anythoughts? With the engine reassembled, we boxed up our second camshaft and headed for Westech's dyno. $700.98. Ha! Its funny no one mentioned anything about ignition timing or components, Your email address will not be published. Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) - GT40P heads? i have a 302 engine from a 1977 granada and i am wondering if gt40p heads from an explorer will fit on this motor. Yeah, out of a bolt on upgrade, you'd probably be looking at 260-280rwhp ish with supporting mods. hole size 302 is 7/16 and 351 is 1/2 Ford Factory 5.0 Performance Cylinder Heads. 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. I'm sure the dyno operator used some goofball correction factor to make the numbers look higher. Our recommendation would be, rather than change the camshaft, you might want to look into adding a set of long-tube headers and a dual exhaust if the engine is not already so equipped. 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. ported GT-40p, ported cobra intake, 65mm BBK, e-cam with 1.7s, longtubes, off-road x-pipe with flowmasters dumped. Advanced: Daily Deals; Help & Contact; Sell; My eBay Expand My . Test 2: Changed to the smaller of the two Lunati camshaftsno other changes. Smith began writing for Car Craft magazine in 1979 and became editor in 1984. 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. 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. Slover primarily focused on the exhaust side of the GT40P heads. 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. The factory heads have a boss for the exhaust valve that restricts flow through the exhaust port. So I've got the motor and heads already for my maverick project. The tube headers showed a gain of almost 100 hp! While the heads were off getting a massage, we turned our attention to the cam timing. And remember ENGINES have been being built/rebuilt/modified for years. You can email the site owner to let them know you were blocked. 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. Here is the lowdown on exhaust manifolds and VALVE SPRINGS. Start with any 302 block, but try to find one from 1985 and up since it will already have provisions for a roller camshaft. With gt40p heads and 289 hipo exhaust manifolds changing sparkplugs is the same as the original 302 heads and manifolds, I use the spark plugs that are recomended for the explorer with gt40p heads and you can use straight or angled boots. Early Windsors tend to have fairly restrictive exhaust manifolds, making the addition of a set of headers that much more efficient. The Fora platform includes forum software by XenForo. Cloudflare Ray ID: 7a2e2d95dedea1e4 They almost seem like flywheel numbers rather than RWHP numbers. Works on all factory cast iron E7, GT40, and GT40P cylinder heads! +1 I would go with the regular GT40 heads. Posted on May 07, 2014 by promarengine. We also added a veteran Ford magnetic pickup distributor and used it to drive an MSD ignition system. The spark plug issue is almost a non-issue. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. This 1979-1995 Mustang cylinder head and camshaft guide will overview the heads and cams we offer and how they will coincide. The 5.0L with the GT40 head had a 9.0:1 compression, and the 5.0L with the GT40P head had 9.1:1 compression. Calculated compression to 9.8:1. After graduating from Iowa State University with a journalism degree in 1978, he combined his two passions: cars and writing. this head fits years 95-01 explorer mountaineer mercury mountaineer . The Edelbrock Performer RPM is a good choice, but Holley, Weiand and Ford Motorsport also have similar offerings. Ill do springs and a moderate cam and go for a good, dependable power plant. What would be the best cam and springs to use for these heads in a 302 Windsor? 1986 Short block with notched pistons. K.S. Location: Re: Stock Ford 351W 4bbl dyno numbers. You keep stock drivability, and stock gas milage if you can stay out of boost. 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. When building an engine there is a lot to take into consideration. I may do some port matching and a little cleanup, otherwise just a set of springs and cam and see what I have. It has underdrive pulleys, MSD ignition, Bassanni headers and forward exit exhaust. 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 This test went so well that we were eager to see what the slightly bigger cam would do. Without changing the stock pistons. 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. The engine never huffed oil out of the breathers, and the spark plugs all looked excellent. The rest went very smoothly, and we reused the stock lifters and suffered no ulcers worrying about breaking in the cam. These are among the best of the iron Ford Windsor heads as they tend to flow much better than earlier castings. The MPH was there to run a little better but the local track is about terrible. Yes- thank you. I turned it because it was tired when I got it. And agree the cams do help and a few tricks with the heads that I have discovered really make a difference. 68stang351 Founding Member May 16, 2002 850 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. There are literally a dozen or so camshaft companies that offer a mild hydraulic roller cam for a 5.0L Ford. 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. Win or lose, if you buy the ticket you must take the ride. For the first test, we were reusing the stock Explorer cam, so the engine didn't need any break-in time. 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. 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 . You didnt mention which cam you had in mind. Yes Mr.Smith, your column here at OAC adorned with extreme performance without power adders, or all Engine as its known, from a superior pushrod Small Block featuring almost all USA sourced modern components with the familiar smell of Ford Blue. HiPo manifolds and Ill be good. Install a used set of 5.0L Mustang "shorty" headers, generally available at auto swap meets for a reasonable price. fuel injection system . If this is beyond your technical ability, you could ask a local machine shop to perform the modifications. The 302 uses smaller 7/16" head bolts and your "P" heads may or may not require the step washers. We didn't increase the valve size, although we did have to add Manley valves to get the proper spring-installed height. 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. Per a UEM tech support email I have the Icon IC736 is supposed to be good for GT40 heads when I asked about it. Sponsored. I had those on my car before I upgraded and they were nice heads. The GT40P heads flow a lot better than stock 351 heads. We took the heads to Mike Slover of Slover's Porting Service in Sun Valley, California, to do this work, plus some basic pocket-porting to improve flowespecially on the exhaust side. Over $2050 for the 165/185 renegades. 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! All this is worth it. If you dont feel comfortable doing this higher a pro. The kit offers adjustable power from 50 to 250 hp with a simple jet change. I guess I had it backwards, sorry about that, didn't mean to spread misinformation. The action you just performed triggered the security solution. 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! Along with the heads, we used MAC headers for GT-40P heads. You'll have to plug the oil hole that is in the engine from the old oil dipstick. Or just play it safe and let the fans ask away about another daring 5.0 TB bolt on or for an exciting surprise, do a LS______ fill in the blanks. T5z and 3.89 9" TL rear. Because of this, your tuneup will probably need to be modified. I view the GT40P heads similar to Granada brakes. 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. that is a healthy budget deal. Yeah, except those. a) ain't early and b) aren't 289 heads. Overview. 69.90.139.244 Then why did you port the heads and how do you know if you made an improvement. Really hurt too. You might even say its like flogging a dead horse without any animals actually being injured during my moments of sarcasm. 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. I went to a couple in Tucson and almost all the Ford vehicles that came with a 5.0 had the heads missing. Come join the discussion about popular models such as the Mustang, Galaxie, Falcon, Fairlane, Torino, Shelby and many more! Keep in mind that swapping camshafts is a fairly extensive effort. Shop by category. The Fora platform includes forum software by XenForo. JavaScript is disabled. fordfan289, Aug 27, 2011 I got lucky and found a complete Explorer GT40P engine online. 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. We decided to test both ideas, so we ordered two roller cams from Lunati: a shorter-duration cam that would deliver decent idle vacuum and maybe make around 320 to 335 hp, and a longer-duration version that might push the horsepower up to perhaps 350 hp. Similar to regular GT-40 heads, the biggest difference between the two is that the P-heads feature a revised spark plug angle which extends the plug into the combustion chamber, putting the flame front close to the absolute center of the chamber, resulting in a smoother combustion process. Nudge us with emails, and we'll make it happen. LOW-BUCK 302 FORD HEAD UPGRADE Richard Holdener 239K subscribers 189K views 2 years ago WESTECH PERFORMANCE GROUP WHAT'S IT WORTH? They work, but present their own challenges. 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. Headers and a camshaft will help but the engine really needs aftermarket 3/8 inch connecting rod bolts and aftermarket cylinder heads. check out the. 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). With no other changes we gained 25 hp using factory iron heads. Save narve00 Calculating pushrod length Be careful, I was once bitten by one of those reptile engine builders. The SUV indicated barely 120,000 on the clock, and after yanking the valve covers to judge the engine's condition, Tim Moore instantly made the decision to do the boneyard version of a smash-and-grab. '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 THANKS VERY MUCH! Just put some 1.7 pedistal rocker arm on along with a mild camshaft (make sure to use the correct valve springs), you will make over 300 flywheel hp. Hey all, I'm working on building a 302 with my gt40p heads. And have discovered something that I dont think anyone else knows. United Engine and Machine sells cheap but decent pistons that will do what you're wanting. Yea. 02-11-2012, 07:16 PM #6 fiveoh 86lx The cost of a new set of standard replacement roller lifters is very affordable at major retailers like Summit. Sponsored. 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. You could run a thinner head gasket as well. You need to check. Step 2. Both swaps made more sense when parts were readily available at the bone yard for cheap. 97% Positive Feedback . (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. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. 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. Tim's junkyard refugee survived the beating and we had a bitchin' story. ford 302 sbf gt40p v8 cast iron complete cylinder head and head bolts and head gasket set. 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. I'm wondering how these heads will interact with the paxton 1220 sl supercharger I'm trying to put on. $169.50. I love my setup and it is very strong engine. Different years can have different combustion chamber sizes but ffor the most part there will be no performance increases by going with 302 heads. I bought a crate 302 from Downs Ford a few years ago that was producing 320 hp. He'll have to get a gear for his distributor. (Image/Harrison Creamery). Compare. You just want to keep it out of detonation. Yea.

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