this head is complete with new 1.837 int valves and 1.536 exhaust valves. I used Lightning heads on my 302, (GT40 not P) with stock rockers on a flat tappet engine. Early Windsors tend to have fairly restrictive exhaust manifolds, making the addition of a set of headers that much more efficient. Shop by category. They fill that spot between power and budget. A LOT of them do it these days. These are a great head but do need some machining mods to make they really work well. 950.00 us a set and will ship . i'd love to use these heads,. The MPH was there to run a little better but the local track is about terrible. Also, the spark plug angle makes it a pain. (Please note these are not GT40P Explorer heads). Depending on the Headers you have you might be okay. I've not seen a set of longtubes that have an issue with GT40P's, either. After we installed the heads and with the fan off, he ran a 12.46 at 107.9. K.S. I have a 302 Windsor V8 EFI engine that I converted to a 600 cfm carburetor with a Street Warrior intake manifold. Yeah, out of a bolt on upgrade, you'd probably be looking at 260-280rwhp ish with supporting mods. #1:::Throw out all your Magazines that suggest what to do! (its not their engine) This is what I recommend to everyone who is doing a budget 5.0 build. Features hardened 4140 Chromoly retainers, valve locks, spring shims, a spring height gauge, valve seals, and instructions. Despite adding 30 degrees of intake duration, this cam improved torque throughout the entire test from 3,000 rpm on up. I added a link to it. If you can find individual flanged headers like the obsolete MAC headers had, those worked really well with GT40P's. You can email the site owner to let them know you were blocked. at the crank. The GT40P heads flow a lot better than stock 351 heads. After a couple grand you have a killer set of heads, but there's got to be a less-expensive way of making horsepower. JavaScript is disabled. You will have to address the 50 oz balance of the 5.0 engine by getting a 50 oz flywheel. You will have to get special headers to fit these heads since the spark plugs are angled differently than normal 5.0 heads. 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. The newer camshaft is designed for use with a soft bronze distributor gear, not the hardened steel gear used for older camshafts. The tube headers showed a gain of almost 100 hp! All manufactured using advanced CNC technology for the extreme durability and precision required of the modern canted valve Ford Small Block at power levels around the 1000 mark reached during recent competitions at the EMC and at the strip. Most of them are aware of what changes need to be completed. Small Block Ford 289/302/5.0L/351w 180cc/60cc Aluminum Cylinder Head E42004. Central Coast Mustang sells GT-40P heads at a great price, making them a viable alternative in a market flooded with performance head choices. made more power everytwhere and 40 hp is respectable. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. SB Ford GT40 Drop In Valve Springs Kit, Hyd Roller w/ Stock Cam, .450" lift and below. 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. We did a quick search for hydraulic roller cams and landed on a COMP camshaft that looked promising. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 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. Most of the time, GT-40 heads are worth a good 20-40hp over stock heads. This is needed for the steel roller cam. Works on all factory cast iron E7, GT40, and GT40P cylinder heads! The car weighs #2835 with driver. 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. I would like to know what heads, cam and intake manifold combination to use for the most HP I can squeeze out of that motor. I went to a couple in Tucson and almost all the Ford vehicles that came with a 5.0 had the heads missing. Every thing he tells you on this site is true. 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. 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. For a better experience, please enable JavaScript in your browser before proceeding. They almost seem like flywheel numbers rather than RWHP numbers. Holten tells us removing the fan is worth two-tenths in itself, which tells us the fan soaks up roughly 20 hp. We gained 45 hp and 40 lb-ft of torque. In less than an hour, we were ready to test. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. The heads that were used were also old C8 casting with 58cc chambers. So I've got the motor and heads already for my maverick project. Even with a stock Mustang 5.0 cam makes good power. SB Ford GT40P Drop In Valve Springs Kit, Hyd Roller w/ Stock Cam, .450" lift and below. If I remember right, non of the GT40P's (later models) had the thermactor smog provisions. 1985 Mustang GT Mild 331 4bbl 5 spd, 1985 SEFI LTD LX AOD. It has underdrive pulleys, MSD ignition, Bassanni headers and forward exit exhaust. Advanced: Daily Deals; Help & Contact; Sell; My eBay Expand My . Start with any 302 block, but try to find one from 1985 and up since it will already have provisions for a roller camshaft. 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. I've got gt40p heads for it I'll be running, and can't afford better . Without changing the stock pistons. Install a set of 1.7:1 roller-tipped rocker arms on the heads. Limited header choice is certainly a challenge. Dec 8, 2011. You can have your current 28 oz rebalanced to 50. The Edelbrock Performer RPM is a good choice, but Holley, Weiand and Ford Motorsport also have similar offerings. Pride is built, in your garage, with your two hands. But what we were most impressed with was the solid gain in torque over the smaller Voodoo cam from 3,500 and up. Its funny no one mentioned anything about ignition timing or components, Your email address will not be published. Actually, making around 240 to 250 hp with a near-stock Windsor 302 will feel pretty good. Because of this, your tuneup will probably need to be modified. With. Pretty sure that was name, but I could be wrong. 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. We are offering a pair of original Ford Cobra 5.0 GT40 cast iron cylinder heads. We didn't increase the valve size, although we did have to add Manley valves to get the proper spring-installed height. The spark plug issue is almost a non-issue. If you smooth out the bowls and exhaust ports and gasket match the intakes they should flow decent. In mid-1997, the Explorer and Mountaineer 5.0 L heads were revised and renamed . A COMP hydraulic roller cam we found works well with this combination. There are literally a dozen or so camshaft companies that offer a mild hydraulic roller cam for a 5.0L Ford. We also added a veteran Ford magnetic pickup distributor and used it to drive an MSD ignition system. Ha! Well offer one as an example. Gasoline/Diesel all makes on earth & still doing it today with great pride.Feel free to contact me anytime. We heated the bottle to 950 psi and hit the button at 4,500 rpm. Not when you can buy a set of Promaxx or AFR Enforcer heads for $1000, that already have decent hardware included. 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! We guarantee plenty of burnout action when you add GT-40P heads to your 5.0 Mustang. I can tell you that with my 9.503 block, 22cc dished pistons and 64cc heads, I'm at 9.5:1 compression. 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. 69.90.139.244 Manual trans. You need to check. We know what you're thinking--only two-tenths from an extra 45 hp? I got lucky and found a complete Explorer GT40P engine online. fordfan289, Aug 27, 2011 First, adding headers will improve power on the existing combination. Good on ya Jeff Smith. I have a 432 HP non Hi Po 289 I built. Plus you will need to drill all the head bolt holes out as the 351W uses larger head bolts. The "P" heads flow better. Some ideas never go out of style. 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. The combination of this cam with your intake and headers will produce a very nice street engine. 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. 302 .030 over with; Scat Forged Steel Rods, SpeedPro pistons and rings . 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. JavaScript is disabled. 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. 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. REMANUFACTURED FORD 302 5.0 COBRA GT40 CYLINDER HEADS. You keep stock drivability, and stock gas milage if you can stay out of boost. The Fora platform includes forum software by XenForo. 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. Free shipping for many products! This will cost additional money but is still worth it, in our opinion. Maybe I'll think about a cam swap? Through Central Coast you can have the heads fully prepped for your combination. 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. But don't think that adding a bigger camshaft will make more power. SBF engines are modified constantly. I'm 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.
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