Part of this reason is due to its inherent strength and simplicity, but a lot of it has to do with how little Ford has changed it over the years. You will have to address the 50 oz balance of the 5.0 engine by getting a 50 oz flywheel. This will cost additional money but is still worth it, in our opinion. 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. I'll save the effort and lighten my front end by 50# with aluminum. E303 Cam advanced 4 degrees. Horse Sense: The smaller valves found in GT-40P heads improve airflow velocity. 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. 331/347 stroker w/gt40p's, waste?Hp?cost involved? - Maverick Choose a cylinder head before you install the pistons. With no other changes we gained 25 hp using factory iron heads. A good port job can set you back another $500-$1,000. Best of all, no machining is required to install these on your stock cast iron heads! Mar 23, 2004. Mustang Cylinder Head & Camshaft Guide (79-95) - LMR Yea. 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. 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. thats after 3 hours of idling/midrange hits to tune the idle and part throttle . It has underdrive pulleys, MSD ignition, Bassanni headers and forward exit exhaust. Stock 1989 5.0L HO pistons will work if you can find them. Anyways, I know the gt40ps will bump . AFR 165 Heads | Have options for pedestal mounted rocker arms or stud mounted rocker arms. But dont think that adding a bigger camshaft will make more power. A trip to Orlando Speed World provided us with updated quarter-mile times. 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). Gt40p heads - FourEyedPride.com 99 Explorer engine (302) with GT40P heads - Ford Muscle Cars Tech Forum Location: Re: Stock Ford 351W 4bbl dyno numbers. GT40Ps have 58cc. These are some of the best castings Ford ever produced for this engine, and are still fairly cheap and available used. These are among the best of the iron Ford Windsor heads as they tend to flow much better than earlier castings. GT40P Heads how much hp from them. - StangNet 1 - 7 of 7 Posts. At the dragstrip, we gained two-tenths and 2 mph. If this is beyond your technical ability, you could ask a local machine shop to perform the modifications. Because of this, your tuneup will probably need to be modified. Ford GT40P 302 5.0L 4 Bar Cylinder Head Assembly Pair w/ 1/2" Head Bolt Hole. Don't let the fact that the iron GT40 heads have a larger exhaust valve fool you. The spark plug issue is almost a non-issue. The asterisk HP differences are calculated using Test 1's 294-hp peak. Headers and a camshaft will help but the engine really needs aftermarket 3/8 inch connecting rod bolts and aftermarket cylinder heads. 950.00 us a set and will ship . They also have emissions legal heads as well. Shop by category. 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. Save narve00 Ford Explorer Mountaineer 5.0 Ohv Iron 302 Sbf The reply has so many assumptions that I cant even assume to know the answer. 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. We will go into more detail on the head mods in a later story in Junkyard Builder, so watch for it. check out the. Ford GT40P 302 5.0L 4 Bar Cylinder Head Assembly Pair w/ 1/2" Head Bolt Hole. gt40p headers | Maverick/Comet Forums Your IP: The '00 Ford Explorers and Mercury Moutaineers were factory equipped with one of Ford's better 5.0L motors. Really hurt too. (its not their engine) 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. 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. However, since Holten's car has an E303 cam, we didn't want the pistons and valves becoming too close, so we chose the 1.6 rockers. The cost of a new set of standard replacement roller lifters is very affordable at major retailers like Summit. 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. GT-40 heads HP increase | Mustang Forums at StangNet I had a set of 69 302 heads I ran for a while . Enter your search keyword. Go for it if you get them super cheap and can get headers/manifolds super cheap as well but otherwise I'd say it's a waste of time and money. I ran the Speed Pro L2488 pistons and it had me around 9.9 compression with a .041 head gasket, Now I had GT40 heads milled .020 and so that's just a guess on the CC. Richard Rowe has been writing professionally since 2007, specializing in automotive topics. Rowe studied engineering, philosophy and American literature at Central Florida Community College. They are more expensive than standard head gaskets, but they also do the job and are worth the additional money. 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. Understanding Ford's Fox Body GT40 Cylinder Heads - CJ Pony Parts How to Build a Cheap Drag Racing 302 Ford Motor | It Still Runs 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 have a question once i get the gt40p heads from the explorer truck can i also take the exhaust manifolds or headers and fit them in my 66 mustang:?:!?!?!? Plus you will need to drill all the head bolt holes out as the 351W uses larger head bolts. However, theres a distinct possibility that I might pull all of my hair out if I see another in-depth article explaining how I, along with just over a billion other desperate humans seeking answers, need special valve spring split locks for my next tired Chevy build. For both the GT40 and GT40p heads, I STRONGLY suggest upgrading the valve springs. In 1987, he assumed the role of editor for Hot Rod magazine before returning to his first love of writing technical stories. Dec 8, 2011. Here a comparison of different heads on a 302: I'm very happy with my GT40P. It's a classic move we've pulled off many times. So I've got the motor and heads already for my maverick project. Most of the time, GT-40 heads are worth a good 20-40hp over stock heads. This test went so well that we were eager to see what the slightly bigger cam would do. 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. And remember ENGINES have been being built/rebuilt/modified for years. If you wanted to make your engine feel strong, these would be a decent investment, but they will require some modifications. Also, you'll need to get a steel distributor gear to replace the iron gear that is currently on your distributor. There is a better way. 69.90.139.244 Cast iron GT40Ps as cast flow better than non-Ps due to revised plug location/angle. These engines came with the GT40P head, which even with its small valves, offers really good performance. Worst AFR 165 dyno ever | Factory Five Racing Forum JavaScript is disabled. This website is using a security service to protect itself from online attacks. well i finally did my first ever carb build, ive always been an EFI guy Black 1985 GT: 408w, in the 6's in the 1/8 mile. 68 XR7 & 68 M-100. For a better experience, please enable JavaScript in your browser before proceeding. 1986 Short block with notched pistons. Pretty sure that was name, but I could be wrong. SBF engines are modified constantly. They work, but present their own challenges. Is asking advice for a fairly common situation involving parts with mandatory compatibility between the two for performance and longevity. check out the. Can anyone give me a little feedback about a '99 Explorer 5.0, and tell me if it's my answer. Supercharging GT40p heads | Modded Mustang Forums The gt40p head is considered the best OEM 302 head made. Then why did you port the heads and how do you know if you made an improvement. GT40P heads, what kind of performance do they give? - FourEyedPride.com This is a function of the somewhat wider lobe-separation angle of 112 degrees. i've got a short block started, and i recently came across a set of GT40P heads for FREE ( love family members). Mac and Ford Motorsport both make a GT40P spacific header. Slover primarily focused on the exhaust side of the GT40P heads. Manual trans. The kit offers adjustable power from 50 to 250 hp with a simple jet change. #2::: Get advice from a reptile engine builder with experience(first flag for me is when somebody refers to an ENGINE as a MOTOR! For 2018, the Coyote makes 460 hp. Keywords . 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. You gave me the info I was looking for, and I really do appreciate it. For a better experience, please enable JavaScript in your browser before proceeding. I am very happy too. 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. P-heads have a smaller combustion chamber at 59cc, which will bump the compression ratio up on an otherwise-stock 5.0 engine. 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. In less than an hour, we were ready to test. 87-93-95 Ford Mustang GT40P Engine Cylinder Heads REBUILT 302 351 GT40 SBF OEM | eBay Motors, Parts & Accessories, Car & Truck Parts & Accessories | eBay! Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) - anyone have experience with GT40P heads on a 92 351W - ive got a 92 F250 with a 351W that needs a pretty serious rebuild. That's more than enough to feed a power-brake booster. Weiand 7515 xcellerator intake. I got rid of the carburetor and went with a F.A.S.T. Ford Factory 5.0 Performance Cylinder Heads. These cast piston short-blocks are not quite as good as the forged piston 5.0L that came in Fox-body Mustangs, but the GT40P heads flow much better than earlier 5.0L heads. Works on all factory cast iron E7, GT40, and GT40P cylinder heads! If they are cheap enough, take them anyway. I have to agree, the GT40P heads flow better than the GT40 iron heads. Its NA but makes use of AFR heads and some other aftermarket goodies. We did a quick search for hydraulic roller cams and landed on a COMP camshaft that looked promising. Good Luck. K.S. He'll have to get a gear for his distributor. at the crank. Well offer one as an example. Yea. Limited header choice is certainly a challenge. 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. The GT40P heads had a small combustion chamber ranging from 58-61cc while the GT40 heads had a 63-66cc combustion chamber. For the first test, we were reusing the stock Explorer cam, so the engine didn't need any break-in time. I have a 5.0 from a 1992 Mustang in my 65. GT40P heads, what kind of performance do they give? Without changing the stock pistons. Yank a motor out of the junkyard, clean it up, add a camshaft, intake, and a carburetor, and see how much power we can squeeze out of it. The GT40 & GT40P heads had a few differences that are note-worthy, the most importantly being the bump in compression. Despite adding 30 degrees of intake duration, this cam improved torque throughout the entire test from 3,000 rpm on up. the springs are new stock oem ford. Start with any 302 block, but try to find one from 1985 and up since it will already have provisions for a roller camshaft. 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. Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) - GT40P heads? Now he serves as a regular contributor to OnAllCylinders. Going from your heads to the GT40p heads will bump your compression by about a point.so hello bottom end torque. Very true about finding them at the local yards. Test 1: 750-cfm carburetor, dual-plane intake manifold, and stock camshaft. Test 3: Installed the larger Lunati camagain, no other changes. Well that article just got me very ancy, I want these heads!! 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. Torque on the other hand isnt something to write home about. 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. AFR 165cc 58cc Heads. HAD '82 GT monochromatic (red).black cloth HAVE I need that part number too! For all of us interested in Gt40p heads. I got lucky and found a complete Explorer GT40P engine online. In an effort to preserve the history of the Early Fox Era, FEP covers the following vehicles: 79-86 Mustang and Capri, 84-86 Mustang SVO, 78-83 Fairmont & Zephyr, 83-86 LTD & Marquis, 80-88 Thunderbird & Cougar, 82-87 Continental, 84-92 Mark VII, 81-82 Granada. The HP DIFF column on the far right lists the horsepower difference between Test 1 and Test 3. Central Coast Mustang sells GT-40P heads at a great price, making them a viable alternative in a market flooded with performance head choices. You didnt mention which cam you had in mind. JavaScript is disabled. And have discovered something that I dont think anyone else knows. 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 . Not sure about that but got some pictures of the cast iron explorer manifolds on a 302. that is a healthy budget deal. Assemble the rotating assembly with a stock 5.0L crankshaft, a set of 5.0L rods and the specified pistons with stock-type rings. Car Craft mag. 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. 69-70 302 heads (the ones with the heart-shaped combustion chamber) Any early 289 heads for the chamber size (but you'll have small ports & valves w/all that CR) Flat Ernie, Aug 27, 2011 SHARE POST #8 fordfan289 Member from indiana correct me if Im wrong but cant you use 351c heads and get the same thing as a 302 boss. . JavaScript is disabled. Some ideas never go out of style. FULL DYNO RESULTS. MAC is the only manufacturer of these headers, and the parts we installed fit like a glove with no problems whatsoever. I must agree with Jeff Smith. 289 or 351 heads on a 302 advantage? | The H.A.M.B. That's fantastic for the minimal investment we made. That said there are some better aftermarket options for heads also. No-option stripper- I like strippers. On slicks the car went some low 7.70s right at 90mph. In addition, the cam timing was designed for torque, with duration somewhere around 190 degrees at 0.050 with roughly 0.450-inch lift. 302 .030 over with; Scat Forged Steel Rods, SpeedPro pistons and rings . The GTp heads are like GT 40's with smaller combustion chambers and the spark plugs are relocated for a more efficient burn. No-option stripper- I like strippers. Upgrading Fox Body Cylinder Heads - AmericanMuscle.com For a better experience, please enable JavaScript in your browser before proceeding. GT40 vs GT40P: Who has Smaller Chamber Volume ! More compression 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. Eldelbrocks Air Gap intake manifold should work well with the combination. Like I said lots of options. Always the weak area in the 289 and 302 is the tiny 5/16 inch connecting rod bolts and the miniscule intake and exhaust ports. SB Ford GT40 Drop In Valve Springs Kit, Hyd Roller w/ Stock Cam, .450" lift and below. I recall having an absolute blast with my old K-code coupe back in the day. Not looking for crazy HP. This will keep you from dropping your overall static compression ratio and losing power. 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. Those heads were unported and had stock valve sizes! '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 You can email the site owner to let them know you were blocked. Im now thinking of adding a cam to match the carb. The combination of this cam with your intake and headers will produce a very nice street engine. A bit of info for those looking to build 300+hp 5.0L/302s There are too many variables to add to this regarding aftermarket stroker kits or components. Definitely going to use my P heads. I'm wondering how these heads will interact with the paxton 1220 sl supercharger I'm trying to put on. This 1979-1995 Mustang cylinder head and camshaft guide will overview the heads and cams we offer and how they will coincide. Dennis Hilliard of Central Coast says we can expect to gain three-tenths in the quarter-mile. The Fora platform includes forum software by XenForo. I got a set of AFR heads , night and day. Get 500 Horsepower from a Junkyard Ford Explorer 302 - MotorTrend If you know him, ask him. 302HO with gt40p heads | Mustang Forums at StangNet 1983 Mustang G.T. 402 HP NA from a HI PO 289 isnt that mysterious of a feat to accomplish with todays SBF Aftermarket parts availability. 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. This is the main reason why these engines are not modified as much as the small block Chevy. I am working on a set of iron GT40s hoping it goes faster. But don't think that adding a bigger camshaft will make more power. Holley 670 street avenger carb. After a couple grand you have a killer set of heads, but there's got to be a less-expensive way of making horsepower. 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. Ford 302W / 5.0L History & Specifications - The Ranger Station A forum community dedicated to Ford Mustang owners and enthusiasts. Purchase any used aftermarket manifold for the 302 that is designed to function in the 3,500 to 6,500 power band. How much HP and torque do you think I. The newer camshaft is designed for use with a soft bronze distributor gear, not the hardened steel gear used for older camshafts. Along with the heads, we used MAC headers for GT-40P heads. 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. this head fits years 95-01 explorer mountaineer mercury mountaineer . 302 heads on 351w | ClassicBroncos.com Forum Well also assume that this engine is running stock exhaust manifolds. We then dyno'd the car without the fan to get some consistency and were rewarded with a peak of 316 hp at 5,500 rpm, and 348 lb-ft of torque at 4,000 rpm. Sure, you could race-port the existing E7 castings, which many have done, but then you're putting quite a bit of change into stock heads. You didnt mention what camshaft you would be choosing or exactly which 5.0L Ford Windsor engine you are working with. Building a 302-inch small-block to produce 400 hp is really no big deal, but doing. by travis Sun May 03, 2020 8:33 am. If you smooth out the bowls and exhaust ports and gasket match the intakes they should flow decent. There are a lot of variables that must be addressed to give a better estimate, but a good basic estimate is 20-40 HP at the crank. We are offering a pair of original Ford Cobra 5.0 GT40 cast iron cylinder heads. After we installed the heads and with the fan off, he ran a 12.46 at 107.9. 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. Good on ya Jeff Smith. You can have your current 28 oz rebalanced to 50. 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! Thank You. FORD, SMALL BLOCK 302 HO w/ E7, GT40P & GT40 - Alex's Parts Not bad for off the shelf parts and a stock shortblock. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 02-11-2012, 07:16 PM #6 fiveoh 86lx Most of them are aware of what changes need to be completed. Can I run the new cam with the same roller hydraulic lifters or do I have to change the lifters too? Richard Holdener 240K subscribers Subscribe 63K views 1 year ago WESTECH PERFORMANCE GROUP LOW BUCK, GT40P 5.0L HEADS-CHEAP &. #3::: Do your homework,get quality parts,dont skimp. This is a common mistake with first-time cam buyers who dont necessarily appreciate that the cam is just one component of the overall engine package. Hey Motorheadty,Like your comments,question for ya,I have a 92 convertible,just bought a 5.0 out of a 94 gt that was just freshened up top end,gt40p heads w/new springs etc for the new E303 cam,new FRP roller lifters,Crane 1.7 rockers,hardened push rods,double roller timing set,all put on a bottom end w/104000 miles,needless to say previous owner pulled said engine after 800 miles and now building a 351,I pulled engine down my machinest,putting forged internals in and bolting everything back together,I want to run about a 150 shot N2o,and iam going carb,wondering which intake would be best w/the 150 shot,heard that dual planes might not be the way to go? The 2 heads are about the same when looking at the numbers with the GT40p heads having a slight edge. If you have a early 351W ie pre 76 it probably .

Uchicago Medicine Payroll, Genex Services Lawsuit, The Smartest Giant In Town Planning Year 2, Articles OTHER