302 with gt40p heads horsepower 302 with gt40p heads horsepower

Small Block Ford 289/302/5.0L/351w 180cc/60cc Aluminum Cylinder Head E42004. Purchase any used aftermarket manifold for the 302 that is designed to function in the 3,500 to 6,500 power band. Jeff Smith: It would have been better to know a little bit more about your combination, but the short answer is yeswith a hydraulic roller camshaft, assuming the lifters are in good shape and the roller wheels show no unusual wear, they can be re-used on a new cam with no danger of adverse effects. 1983 Mustang G.T. 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. I guess I had it backwards, sorry about that, didn't mean to spread misinformation. SB Ford, GT40 .575" Lift Max Output II Drop in Valve Spring Kit, Hyd Roller, 140 Lb Seat. These timeslips are from 1280' above sea level. SB Ford GT40P Drop In Valve Springs Kit, Hyd Roller w/ Stock Cam, .450" lift and below. $930.00 + $55.00 shipping. But dont think that adding a bigger camshaft will make more power. AFR 165cc 58cc Heads. Save narve00 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 have a early 351W ie pre 76 it probably . Compare. We were cruising the 'yard a while back and located a 2000 Ford Explorer with an EFI 5.0L V-8 engine. Its funny no one mentioned anything about ignition timing or components, Your email address will not be published. For this reason, we're not sure what kind of boost the GT-40P heads will give. With the tuning finalized, the little cam made far more power than we expected, cranking out 328 lb-ft of torque at 4,200 and 294 hp at 5,400 rpm. Skip to main content. . I added a link to it. 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. Actually, making around 240 to 250 hp with a near-stock Windsor 302 will feel pretty good. #2::: Get advice from a reptile engine builder with experience(first flag for me is when somebody refers to an ENGINE as a MOTOR! Holley 670 street avenger carb. i've got a short block started, and i recently came across a set of GT40P heads for FREE ( love family members). I may do some port matching and a little cleanup, otherwise just a set of springs and cam and see what I have. Ford GT40P 302 5.0L 4 Bar Cylinder Head Assembly Pair w/ 1/2" Head Bolt Hole. I had those on my car before I upgraded and they were nice heads. The reply has so many assumptions that I cant even assume to know the answer. Ha! Because its all been done time after time after. I plan on running a AFM b31 cam too which has relatively small duration for the intake valve. 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. 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. Purchase a set of flat top pistons (from Ford Motorsport, TRW or Keith Black) with machined valve reliefs and designed to provide 10:1 compression with a 59 to 60 cc combustion chamber cylinder head. The Fora platform includes forum software by XenForo. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 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. Also, you'll need to get a steel distributor gear to replace the iron gear that is currently on your distributor. 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. And agree the cams do help and a few tricks with the heads that I have discovered really make a difference. I have managed to get 402 horse power from a 289 hipo natural aspirated. (Please note these are not GT40P Explorer heads). It has underdrive pulleys, MSD ignition, Bassanni headers and forward exit exhaust. 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. Yeah, out of a bolt on upgrade, you'd probably be looking at 260-280rwhp ish with supporting mods. Without changing the stock pistons. Consider having the head's intake ports matched to the intake manifold gasket. The 2 heads are about the same when looking at the numbers with the GT40p heads having a slight edge. The heads that were used were also old C8 casting with 58cc chambers. Required fields are marked *. 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! Calculated compression to 9.8:1. 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. JavaScript is disabled. United Engine and Machine sells cheap but decent pistons that will do what you're wanting. If they are cheap enough, take them anyway. This will keep you from dropping your overall static compression ratio and losing power. Once the headers are in place, then you can consider if you still want more power. It runs smooth but seems lazy. 950.00 us a set and will ship . The action you just performed triggered the security solution. THANKS VERY MUCH! Most of them are aware of what changes need to be completed. Or, you could invest in a new set of heads that would also do the same job but you can expect to spend quite a bit more money. Shop by category. 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. Build Thread 1965 Fastback Project "Racesteed". This website is using a security service to protect itself from online attacks. For a better experience, please enable JavaScript in your browser before proceeding. 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. Enter your search keyword. $169.50. It turned out we were conservative on both counts. You need to check. GT40P heads, what kind of performance do they give? Pride is built, in your garage, with your two hands. Anyways, I know the gt40ps will bump . I love my setup and it is very strong engine. Here is my setup. These are some of the best castings Ford ever produced for this engine, and are still fairly cheap and available used. Last Edit: January 18, 2015, 12:05:31 pm by businesstrader Logged shaunp. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. However realistically, with the amount of money spent modifying the gt40p heads or even those older 289 & 351w heads, you could have even better performing aluminum heads. 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. 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 didnt mention the car this engine is in, but lets assume there is enough room to remove the radiator and any other coolers and perhaps some or all of the front grille and/or brackets before the cam has sufficient room to exit the front of the engine. 68 XR7 & 68 M-100. Related Resources Mustang Generation Nicknames: What Do They Mean? We've already been motivated to put this engine in a buddy's Mustang. Note the head bolt hole issue, some GT40 iron heads had 1/2 holes, if not they will need to be enlarged. 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. Step 1. The engine was only rated at 215 hp, but it at least had 9.0:1 compression. fordfan289, Aug 27, 2011 We did the installation at Holten's place of employment, Motorworks, in Longwood, Florida. You keep stock drivability, and stock gas milage if you can stay out of boost. $700.98. After graduating from Iowa State University with a journalism degree in 1978, he combined his two passions: cars and writing. 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 . JavaScript is disabled. Don't let the fact that the iron GT40 heads have a larger exhaust valve fool you. Choose a cylinder head before you install the pistons. many thanks to all you eco-hippies giving me dirty looks and helping me feel llike an overall badass rebel. 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. P-heads have a smaller combustion chamber at 59cc, which will bump the compression ratio up on an otherwise-stock 5.0 engine. . Commonly referred to as Explorer heads, GT-40P iron castings are found on current 5.0-equipped Explorers. the springs are new stock oem ford. Overview. 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. No-option stripper- I like strippers. Your email address will not be published. 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 First, adding headers will improve power on the existing combination. I was thinking the same but the enforcers are $647ea now so $1400 (inc tax) is the entry price for good set of heads. Holten runs the factory fan, but he had removed it when he ran the 12.63. 1.7 shaft rockers and beehives. I'm using the Trick Flow stage 1 cam with 1.7 roller rockers. 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. Stock 1989 5.0L HO pistons will work if you can find them. Yeah, except those. a) ain't early and b) aren't 289 heads. For the first test, we were reusing the stock Explorer cam, so the engine didn't need any break-in time. Even with a stock Mustang 5.0 cam makes good power. Both swaps made more sense when parts were readily available at the bone yard for cheap. Test 3: Installed the larger Lunati camagain, no other changes. With the engine reassembled, we boxed up our second camshaft and headed for Westech's dyno. The GT40 and GT40P cylinder heads are highly sought after, but how do they stack up against other cylinder heads, and is it worth it to upgrade the Fox Body's stock heads? I'll save the effort and lighten my front end by 50# with aluminum. 69.90.139.244 Advanced: Daily Deals; Help & Contact; Sell; My eBay Expand My . This is an older thread, you may not receive a response, and could be reviving an old thread. We guarantee plenty of burnout action when you add GT-40P heads to your 5.0 Mustang. Application Fits 1979-95 Mustang 302/351 w/ OEM Small Block Ford Heads Compare. You will have to address the 50 oz balance of the 5.0 engine by getting a 50 oz flywheel. 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. HiPo manifolds and Ill be good. Just make sure it is a roller cam. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. The '00 Ford Explorers and Mercury Moutaineers were factory equipped with one of Ford's better 5.0L motors. With the GT-40P heads you will need to back off the timing a couple degrees and bump up the fuel pressure. I got a set of AFR heads , night and day. JEGS High Performance. Most of the time, GT-40 heads are worth a good 20-40hp over stock heads. 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. The combination of this cam with your intake and headers will produce a very nice street engine. For a better experience, please enable JavaScript in your browser before proceeding. I've not seen a set of longtubes that have an issue with GT40P's, either. Holten tells us removing the fan is worth two-tenths in itself, which tells us the fan soaks up roughly 20 hp. 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. *** 65 Mustang 351C 4v, AOD, 4.11 gears *** 66 Galaxie convert big block. For a better experience, please enable JavaScript in your browser before proceeding. 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? This time around, we chose a shining example of this junkyard art form. I bought a crate 302 from Downs Ford a few years ago that was producing 320 hp. All costing in the end at least another $2k. Your IP: Boy, were we surprised with the results. A mild porting with gasket matching will be very good. There are literally a dozen or so camshaft companies that offer a mild hydraulic roller cam for a 5.0L Ford. 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. We are offering a pair of original Ford Cobra 5.0 GT40 cast iron cylinder heads. this head is complete with new 1.837 int valves and 1.536 exhaust valves. This is needed for the steel roller cam. Step 2. That's a 40 per cent increase in power from a simple head and cam swap, and one seriously happy Mustang owner! I have a 302 Windsor V8 EFI engine that I converted to a 600 cfm carburetor with a Street Warrior intake manifold. Late-model ford GT40 and GT40P heads with 1.84-inch intake valves will also flow 185 cfm at 0.50 . Horse Sense: The smaller valves found in GT-40P heads improve airflow velocity. $700.98. could the gear of off the oil pump drive(i know they're DIS), for the explorer motor be used on his dizzy? 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. check out the. I was looking at putting on the GT40P heads on. A forum community dedicated to vintage Ford Mustang owners and enthusiasts. this head fits years 95-01 explorer mountaineer mercury mountaineer .