Assorted screwdrivers, pliers and vise-grips. *** 65 Mustang 351C 4v, AOD, 4.11 gears *** 66 Galaxie convert big block. This is a function of the somewhat wider lobe-separation angle of 112 degrees. Yea. 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. T5 with 3.73s. Learn how your comment data is processed. I have managed to get 402 horse power from a 289 hipo natural aspirated. Not bad for off the shelf parts and a stock shortblock. They were located in Tahachapi CA, and were sold with upgraded springs for $650.00, back in 2002-2003 ish. 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? VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. #3::: Do your homework,get quality parts,dont skimp. Consider having the head's intake ports matched to the intake manifold gasket. The asterisk HP differences are calculated using Test 1's 294-hp peak. No-option stripper- I like strippers. Ported Hurricane Single Plane and custom 750 HP. So . hole size 302 is 7/16 and 351 is 1/2 Works on all factory cast iron E7, GT40, and GT40P cylinder heads! Location: Re: Stock Ford 351W 4bbl dyno numbers. 1.7 shaft rockers and beehives. We probably could have coaxed an even 300 hp out of this stock configuration, but with such good numbers, we decided to jump right into the first Lunati cam. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. I have to agree, the GT40P heads flow better than the GT40 iron heads. What would be the best cam and springs to use for these heads in a 302 Windsor? Headers and a camshaft will help but the engine really needs aftermarket 3/8 inch connecting rod bolts and aftermarket cylinder heads. Holten tells us removing the fan is worth two-tenths in itself, which tells us the fan soaks up roughly 20 hp. Actually, making around 240 to 250 hp with a near-stock Windsor 302 will feel pretty good. Slover primarily focused on the exhaust side of the GT40P heads. You didnt mention which cam you had in mind. Holley 670 street avenger carb. +1 I would go with the regular GT40 heads. Here is the lowdown on exhaust manifolds and VALVE SPRINGS. 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. The engine was only rated at 215 hp, but it at least had 9.0:1 compression. Install a set of 1.7:1 roller-tipped rocker arms on the heads. the springs are new stock oem ford. Nice to see actual dyno results instead of "butt dyno" guesses. by travis Sun May 03, 2020 8:33 am. You didnt mention what camshaft you would be choosing or exactly which 5.0L Ford Windsor engine you are working with. I was thinking the same but the enforcers are $647ea now so $1400 (inc tax) is the entry price for good set of heads. I have a 432 HP non Hi Po 289 I built. Per a UEM tech support email I have the Icon IC736 is supposed to be good for GT40 heads when I asked about it. Once you get into the FoMoCo aftermarket aluminum GT40s though, all bets are off. could the gear of off the oil pump drive(i know they're DIS), for the explorer motor be used on his dizzy? In a lightweight Fox or early Mustang with a five-speed behind it, this would be a great little street engine. Assemble the rotating assembly with a stock 5.0L crankshaft, a set of 5.0L rods and the specified pistons with stock-type rings. 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 you purchase through links on our site, we may earn an affiliate commission, which supports our community. Small Block Ford 289/302/5.0L/351w 180cc/60cc Aluminum Cylinder Head E42004. These are a great head but do need some machining mods to make they really work well. This is what I recommend to everyone who is doing a budget 5.0 build. I'll prob take a trip up there this weekend after scavenging the junkyards, thanks a million. There's not a lot of reson to use 351 heads later than '75 since they essentially identical to 302 heads except for head bolt holes. However I think the opportunity window is slowly closing. 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. Im a different animal. Where they differ is the combustion chamber size. On slicks the car went some low 7.70s right at 90mph. They suffered from poor aftermarket support up until about 15 years ago when it really came on strong. Using the manufacturer recommended springs for your camshaft are a safe bet. I am sure you have increased the bore size and possibly even the stroke a bit and spin it up pretty high in the RPM range. Here is my setup. I have a 5.0 from a 1992 Mustang in my 65. A forum community dedicated to vintage Ford Mustang owners and enthusiasts. 1979 Indy 500 Pace Car. This modification will help your late-model GT40P heads work better with the old-school carbureted intake setup. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Scorpion 1.6 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. Even with a stock Mustang 5.0 cam makes good power. Install a used set of 5.0L Mustang "shorty" headers, generally available at auto swap meets for a reasonable price. bmcdaniel, Feb 17, 2004 #7. v8maverick Member. 1986 Short block with notched pistons. We set the timing to 34 degrees and rejetted the carburetor to get our desired 12.5:1 air/fuel ratio. I used Lightning heads on my 302, (GT40 not P) with stock rockers on a flat tappet engine. Eldelbrocks Air Gap intake manifold should work well with the combination. Shop by category. I'm using the Trick Flow stage 1 cam with 1.7 roller rockers. Stock valve sizes? 87-93-95 Ford Mustang GT40P Engine Cylinder Heads REBUILT 302 351 GT40 SBF OEM | eBay Motors, Parts & Accessories, Car & Truck Parts & Accessories | eBay! I'm wondering how these heads will interact with the paxton 1220 sl supercharger I'm trying to put on. Those are really good numbers. Performance & security by Cloudflare. 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. Required fields are marked *. Despite adding 30 degrees of intake duration, this cam improved torque throughout the entire test from 3,000 rpm on up. The cost of a new set of standard replacement roller lifters is very affordable at major retailers like Summit. Tim's junkyard refugee survived the beating and we had a bitchin' story. Ford Factory 5.0 Performance Cylinder Heads. #2::: Get advice from a reptile engine builder with experience(first flag for me is when somebody refers to an ENGINE as a MOTOR! The multiple-layer steel construction allows the gasket to conform to movement between the cylinder head and block while maintaining a good seal. The only failures Ive had were timing chains and a couple broken rods in a mid 80s 302 with 200,000 miles on it that got about 35 lbs of boost stuffed into it when a pop off valve I bought on ebay failed. P-heads have a smaller combustion chamber at 59cc, which will bump the compression ratio up on an otherwise-stock 5.0 engine. He'd be the best source. (Image/Harrison Creamery). Can anyone give me a little feedback about a '99 Explorer 5.0, and tell me if it's my answer. SB Ford GT40P Drop In Valve Springs Kit, Hyd Roller w/ Stock Cam, .450" lift and below. The rest went very smoothly, and we reused the stock lifters and suffered no ulcers worrying about breaking in the cam. 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. I am working on a set of iron GT40s hoping it goes faster. Just make sure it is a roller cam. Hey all, I'm working on building a 302 with my gt40p heads. E303 Cam advanced 4 degrees. i've got a short block started, and i recently came across a set of GT40P heads for FREE ( love family members). . That's an improvement of 22 hp over Test 2. These heads have been remanufactured using refaced reclaimed Factory Valves. 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). 1 - 7 of 7 Posts. Come join the discussion about performance, builds, modifications, reviews, engine swaps, classifieds, troubleshooting, maintenance, and more! The specs are a conservative 212/218 degrees of duration at 0.050-inch tappet lift but offer a really nice 0.512-inch valve lift for both the intake and exhaust. There are caveats to this plan, however. At the dragstrip, we gained two-tenths and 2 mph. Those heads were unported and had stock valve sizes! That's a 40 per cent increase in power from a simple head and cam swap, and one seriously happy Mustang owner! Both have very similar valve sizes, but the GT40P head has slightly larger combustion chambers for a small bump in compression and better flow. . The GT40P heads had a small combustion chamber ranging from 58-61cc while the GT40 heads had a 63-66cc combustion chamber. JavaScript is disabled. This will keep you from dropping your overall static compression ratio and losing power. You can use the stock roller lifters with any size cam you want. Your IP: But don't think that adding a bigger camshaft will make more power. I've not seen a set of longtubes that have an issue with GT40P's, either. He'll have to get a gear for his distributor. A forum community dedicated to Ford Mustang owners and enthusiasts. Pretty sure that was name, but I could be wrong. Torque on the other hand isnt something to write home about. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Along with the heads, we used MAC headers for GT-40P heads. We didn't increase the valve size, although we did have to add Manley valves to get the proper spring-installed height. Most of the time, GT-40 heads are worth a good 20-40hp over stock heads. Win or lose, if you buy the ticket you must take the ride. i know a guy who used to build race engines so he has all the right tools, how much would it help to get the heads ported and polished or anything else he could do to them. 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. Richard Holdener 240K subscribers Subscribe 63K views 1 year ago WESTECH PERFORMANCE GROUP LOW BUCK, GT40P 5.0L HEADS-CHEAP &. I turned it because it was tired when I got it. The only one that's close, is #7. Dennis Hilliard of Central Coast says we can expect to gain three-tenths in the quarter-mile. For all of us interested in Gt40p heads. $700.98. Do not ever, ever think about using the tube type manifolds. The 302 uses smaller 7/16" head bolts and your "P" heads may or may not require the step washers. . Ford GT40P 302 5.0L 4 Bar Cylinder Head Assembly Pair w/ 1/2" Head Bolt Hole. An aggressive cam will wake it up a bit. Depending on the Headers you have you might be okay. 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. The entire front accessory drive and timing chain cover must be removed, along with the distributor and intake manifold. Ill do springs and a moderate cam and go for a good, dependable power plant. Come join the discussion about popular models such as the Mustang, Galaxie, Falcon, Fairlane, Torino, Shelby and many more! 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. I bought a crate 302 from Downs Ford a few years ago that was producing 320 hp. Advanced: Daily Deals; Help & Contact; Sell; My eBay Expand My . Ford's seminal 302 engine (later re-dubbed the 5.0) has been popular with budget-minded hot rodders for decades. 1983 Mustang G.T. Gt40 heads/intake from a jy explorer, leave the . 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. $930.00 + $55.00 shipping. Test 2: Changed to the smaller of the two Lunati camshaftsno other changes. You might even say its like flogging a dead horse without any animals actually being injured during my moments of sarcasm. 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. The MPH was there to run a little better but the local track is about terrible. 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. Really hurt too. 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. If we subtract the 20 hp that the fan is worth, we end up with a gain of 25 hp. this is the price for one head. check out the. HAD '82 GT monochromatic (red).black cloth HAVE 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. This is an older thread, you may not receive a response, and could be reviving an old thread. 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. Free shipping. 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. We did a quick search for hydraulic roller cams and landed on a COMP camshaft that looked promising. 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. 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. No-option stripper- I like strippers. 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. I think one of the finer traits of a true car guy, is the patience to put a prized car away and just let it sit for a while rather than selling it when life gets in the way. 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. Pride is built, in your garage, with your two hands. The GT40P heads flow a lot better than stock 351 heads. Yea. 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. that is a healthy budget deal. 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. FULL DYNO RESULTS. Purchase any used aftermarket manifold for the 302 that is designed to function in the 3,500 to 6,500 power band. I can tell you that with my 9.503 block, 22cc dished pistons and 64cc heads, I'm at 9.5:1 compression. Different years can have different combustion chamber sizes but ffor the most part there will be no performance increases by going with 302 heads. United Engine and Machine sells cheap but decent pistons that will do what you're wanting. Yeah, except those. a) ain't early and b) aren't 289 heads.
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