302 with gt40p heads horsepower302 with gt40p heads horsepower

The MPH was there to run a little better but the local track is about terrible. Not to mention, they will run circles around GT40P's out of the box. how hard to put on? 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. Ford Factory 5.0 Performance Cylinder Heads. They almost seem like flywheel numbers rather than RWHP numbers. AFR 165cc 58cc Heads. 302 .030 over with; Scat Forged Steel Rods, SpeedPro pistons and rings . As noted, this is looking like hes building a 351 Lightning truck motor, which is a good way to go. Free shipping for many products! are you twisted331 also? the springs are new stock oem ford. Torque on the other hand isnt something to write home about. You need to check. Not sure about that but got some pictures of the cast iron explorer manifolds on a 302. 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. #2::: Get advice from a reptile engine builder with experience(first flag for me is when somebody refers to an ENGINE as a MOTOR! Required fields are marked *. Perhaps even more surprising was how well this engine idled, calmly purring with 16 inches of manifold vacuum at 980 rpm. Come join the discussion about performance, production numbers, VIN decoders, modifications, troubleshooting, power adders, DIY tutorials, and more! THANKS VERY MUCH! 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. hole size 302 is 7/16 and 351 is 1/2 We are offering a pair of original Ford Cobra 5.0 GT40 cast iron cylinder heads. The engine never huffed oil out of the breathers, and the spark plugs all looked excellent. Can I run the new cam with the same roller hydraulic lifters or do I have to change the lifters too? Maybe I'll think about a cam swap? 87-93-95 Ford Mustang GT40P Engine Cylinder Heads REBUILT 302 351 GT40 SBF OEM | eBay Motors, Parts & Accessories, Car & Truck Parts & Accessories | eBay! Mar 23, 2004. The car weighs #2835 with driver. All Ford Mustangs | Model Specific Forums, GT-40P Heads - 5.0 Mustang & Super Fords Magazine. You can have your current 28 oz rebalanced to 50. Jeff Smith has had a passion for cars since he began working at his grandfather's gas station at the age 10. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. at the crank. One benefit gt40P head will have over other 80's-90's model heads, including the gt40 head, is that it has a smaller combustion chamber much like the original 289 heads. They are more expensive than standard head gaskets, but they also do the job and are worth the additional money. Joined . 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. Beyond the engine's amazingly good appearance, Moore had a couple of good reasons for choosing this engine. I'd get the gt40 setup, and put an s trim on it. Free shipping. 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. Actually, making around 240 to 250 hp with a near-stock Windsor 302 will feel pretty good. After a couple grand you have a killer set of heads, but there's got to be a less-expensive way of making horsepower. 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. 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. This engine will be good for your 65 Mustang. I added a link to it. SB Ford, GT40 .575" Lift Max Output II Drop in Valve Spring Kit, Hyd Roller, 140 Lb Seat. I have managed to get 402 horse power from a 289 hipo natural aspirated. Through Central Coast you can have the heads fully prepped for your combination. GT40p heads peak horsepower was [email protected] with 363ft/[email protected] The worked 351 heads showed peak . That's a 40 per cent increase in power from a simple head and cam swap, and one seriously happy Mustang owner! Depending on the Headers you have you might be okay. Like I said lots of options. Last Edit: January 18, 2015, 12:05:31 pm by businesstrader Logged shaunp. SBF FORD Aluminum Cylinder Heads 302 /351w 190cc 62cc 2.02 /1.60 For ROLLER CAM. Keywords This is an older thread, you may not receive a response, and could be reviving an old thread. I've got gt40p heads for it I'll be running, and can't afford better . The action you just performed triggered the security solution. Runs well. 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. 402 HP NA from a HI PO 289 isnt that mysterious of a feat to accomplish with todays SBF Aftermarket parts availability. Going from your heads to the GT40p heads will bump your compression by about a point.so hello bottom end torque. Anythoughts? 1983 Mustang G.T. I got a set of AFR heads , night and day. Choose a cylinder head before you install the pistons. 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. It turned out we were conservative on both counts. In less than an hour, we were ready to test. Install a used set of 5.0L Mustang "shorty" headers, generally available at auto swap meets for a reasonable price. fuel injection system . 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. This website is using a security service to protect itself from online attacks. With nitrous, this is easily a mid-11-second ride. They also have emissions legal heads as well. 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. 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. You might even say its like flogging a dead horse without any animals actually being injured during my moments of sarcasm. This will keep you from dropping your overall static compression ratio and losing power. Then why did you port the heads and how do you know if you made an improvement. 1985 Mustang GT Mild 331 4bbl 5 spd, 1985 SEFI LTD LX AOD. However there are plenty of factory heads that with the help of an experienced machine shop can be great. The question was whether we wanted a torquey small-block or a more cammed-up rpm engine to boost peak horsepower. 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. I need that part number too! Here is my setup. Some ideas never go out of style. *** 65 Mustang 351C 4v, AOD, 4.11 gears *** 66 Galaxie convert big block. You will have to address the 50 oz balance of the 5.0 engine by getting a 50 oz flywheel. It's a classic move we've pulled off many times. Now we know why Dennis Hilliard of Central Coast Mustang is so high on these heads. Let us explain. Both swaps made more sense when parts were readily available at the bone yard for cheap. Skip to main content. It's an 86 roller 5.0 engine that had a recent rebuild sometime in the past with keith black pistons, otherwise stock. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. K.S. This kind of improvement may not seem like much, but the owner of our test car, Jamie Holten, runs in FFW Trophy Stock where three-tenths is a lifetime. Your IP: We also added a veteran Ford magnetic pickup distributor and used it to drive an MSD ignition system. $169.50. made more power everytwhere and 40 hp is respectable. I have a 302 Windsor V8 EFI engine that I converted to a 600 cfm carburetor with a Street Warrior intake manifold. I'm also have the regular GT40 heads on my current build. They fill that spot between power and budget. But don't think that adding a bigger camshaft will make more power. Mac and Ford Motorsport both make a GT40P spacific header. Compare. Those are really good numbers. This is a function of the somewhat wider lobe-separation angle of 112 degrees. 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. He'll have to get a gear for his distributor. Stock 1989 5.0L HO pistons will work if you can find them. Stock valve sizes? 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. JavaScript is disabled. GT 500; Posts: 8496; Location: Brisbane . The valve seats have been cut on a . 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. Come join the discussion about restoration, modifications, NOS parts, troubleshooting, VIN codes, and more! could the gear of off the oil pump drive(i know they're DIS), for the explorer motor be used on his dizzy? With the P-heads requiring pedestal-mount rockers, we also called up Crane Cams for a set of 1.6 pedestal-mount roller rockers. 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. by travis Sun May 03, 2020 8:33 am. Thank You. If you have a early 351W ie pre 76 it probably . We decided on a Powerstar kit from Nitrous Supply, owned by our good friend Mike Thermos, who was one of the original nitrous kit suppliers back in the early '80s. Pretty sure that was name, but I could be wrong. Scorpion 1.6 roller rockers. A bone stock 2bbl early 351w with stock replacement forged pistons (9.0 compression) and dyno headers made 211 Hp . Assuming the above configurationa pushrod 5.0L will potentially make between 250 and 260 hp. 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. Have fun, be safe, enjoy. 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. 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. We need a build on a 400+ hp 302/6 build. If this is beyond your technical ability, you could ask a local machine shop to perform the modifications. There are caveats to this plan, however. 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. Start with any 302 block, but try to find one from 1985 and up since it will already have provisions for a roller camshaft. However, stepping up in the performance head market will set you back more than $1,200 for a decent pair of aluminum castings--and that's straight out of the box, with no porting. $139.99. Weiand 7515 xcellerator intake. Ported Hurricane Single Plane and custom 750 HP. Works on all factory cast iron E7, GT40, and GT40P cylinder heads! 950.00 us a set and will ship . Shop by category. Keep in mind that swapping camshafts is a fairly extensive effort. Step 1. The GT40P heads had a small combustion chamber ranging from 58-61cc while the GT40 heads had a 63-66cc combustion chamber. 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. These timeslips are from 1280' above sea level. 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. Im now thinking of adding a cam to match the carb. Over $2050 for the 165/185 renegades. SB Ford GT40P Drop In Valve Springs Kit, Hyd Roller w/ Stock Cam, .450" lift and below. $700.98. how much HP and torque? Aside from the cost of the nitrous itself, this setup should cost you little more than a stock rebuild using all brand new parts. 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. This pushed that little Ford to a peak horsepower of 503, and that was where we stopped. 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. 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. The multiple-layer steel construction allows the gasket to conform to movement between the cylinder head and block while maintaining a good seal. I got lucky and found a complete Explorer GT40P engine online. For a better experience, please enable JavaScript in your browser before proceeding. I got a GT40P off the assembly line years ago. Its NA but makes use of AFR heads and some other aftermarket goodies. Good on ya Jeff Smith. ported GT-40p, ported cobra intake, 65mm BBK, e-cam with 1.7s, longtubes, off-road x-pipe with flowmasters dumped. 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. A trip to Orlando Speed World provided us with updated quarter-mile times. Add a distributor designed for a carbureted 302 but make sure to install the correct distributor gear for your cam. Here is the lowdown on exhaust manifolds and VALVE SPRINGS. 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! 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. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. I spin it to 6500 and thats about it. Within a few hours of his discovery, the engine was sitting in the back of his truck on its way to a new home. The only one that's close, is #7. Depends on the budget. 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. If you're running a stock cam, 1.7 rockers will work perfectly. Assuming this will be a daily driver engine, a short duration camshaft, especially when combined with a four-barrel dual plane intake manifold and headers, will deliver extremely snappy throttle response and the whole combination will increase the torque and peak horsepower by somewhere in the neighborhood of 20 to perhaps 35 horsepower.

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