Here is the lowdown on exhaust manifolds and VALVE SPRINGS. SB Ford GT40 Drop In Valve Springs Kit, Hyd Roller w/ Stock Cam, .450" lift and below. Ford Factory 5.0 Performance Cylinder Heads. Free shipping for many products! 289 or 351 heads on a 302 advantage? | The H.A.M.B. JavaScript is disabled. Definitely going to use my P heads. The best thing to do would be to use a specific break-in oil for the first 200 to 300 miles of use to reduce the change of a potential problem with undue wear. As usual, there is much more to this story. 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. I don't need tons of power to enjoy the car. The heads got a 3 angle valve job, new valves from speed-pro and all the valve train was from crane that matched the current hydraulic cam. 302, GT40P Heads, E cam, 4 into 4, Holley 600, Mallory Unilite, Levy SD T5, 3.73, 15" Team III, firewall mod, trunk mod, trailer hitch, drivers foot box mod, front tow rings. If I remember right, non of the GT40P's (later models) had the thermactor smog provisions. The 2 heads are about the same when looking at the numbers with the GT40p heads having a slight edge. I got a set of AFR heads , night and day. Required fields are marked *. Dyno results GT40P heads | Vintage Mustang Forums SB Ford, GT40 .575" Lift Max Output II Drop in Valve Spring Kit, Hyd Roller, 140 Lb Seat. In addition, the cam timing was designed for torque, with duration somewhere around 190 degrees at 0.050 with roughly 0.450-inch lift. Well offer one as an example. Do you guys have part numbers for the spring kits? The later model distributors had a different diameter shaft than the earlier ones. 68 XR7 & 68 M-100. Do not ever, ever think about using the tube type manifolds. Eldelbrocks Air Gap intake manifold should work well with the combination. Your IP: 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. Im a different animal. With the engine reassembled, we boxed up our second camshaft and headed for Westech's dyno. Compare. Finding Gt40p heads at the junkyard is getting more and more complicated and if you want to upgrade the heads you have to take into account the costs of the machine shop and compare everything to a set of cheap aluminum heads. The GT40 & GT40P heads had a few differences that are note-worthy, the most importantly being the bump in compression. Fastest e303 5.0l's? - FourEyedPride.com You can have your current 28 oz rebalanced to 50. That said there are some better aftermarket options for heads also. Im 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. . Motor is going into a Ranger. We turned to Rare Auto Design in Orlando for dyno tests to find out how much horsepower we gained. Come join the discussion about popular models such as the Mustang, Galaxie, Falcon, Fairlane, Torino, Shelby and many more! Come join the discussion about performance, production numbers, VIN decoders, modifications, troubleshooting, power adders, DIY tutorials, and more! Build Thread 1965 Fastback Project "Racesteed". There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. They fill that spot between power and budget. 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. Yea. Scorpion 1.6 roller rockers. Not looking for crazy HP. You need to check. 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. REMANUFACTURED FORD 302 5.0 COBRA GT40 CYLINDER HEADS | What's New It's a classic move we've pulled off many times. Paying a premium for a set of GT40P heads or dumping money into some to get their performance to rival aftermarket is not for me. We also discovered some issues with the GT40P heads that required changes, so we added valves from Manley that eliminated the exhaust-valve rotators and allowed us to set the proper valvespring installed height. 402 HP NA from a HI PO 289 isnt that mysterious of a feat to accomplish with todays SBF Aftermarket parts availability. 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. Building a 302-inch small-block to produce 400 hp is really no big deal, but doing. GT40 Heads On A 289? | Ford Muscle Cars Tech Forum These are Ford iron GT-40P heads. 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. Yea. Check my post above. Speedmaster PCE281.2046 Small Block Ford Aluminum Cylinder Heads 62cc Dennis Hilliard of Central Coast says we can expect to gain three-tenths in the quarter-mile. Works on all factory cast iron E7, GT40, and GT40P cylinder heads! .. i would not buy valves unless you need them amd would not switch to studs with these heads for your low hp . First, adding headers will improve power on the existing combination. You just want to keep it out of detonation. Purchase any used aftermarket manifold for the 302 that is designed to function in the 3,500 to 6,500 power band. Using the manufacturer recommended springs for your camshaft are a safe bet. 302 with GT40 heads | Ford Mustang Forums This is not a criticism but instead consider it to be more of a heads-up. A solid 300-325 hp should be plenty and that's with good drivability and reliability as well. Overview. Good on ya Jeff Smith. anyone have experience with GT40P heads on a 92 351W A forum community dedicated to vintage Ford Mustang owners and enthusiasts. Ill do springs and a moderate cam and go for a good, dependable power plant. The longer duration created a slight loss of torque below 3,300 rpm compared to both previous cams, but beyond that mild loss of power, the bigger Voodo out-powered its smaller cousin, cranking out a peak torque of 355 lb-ft at 4,300 (a gain of 7 lb-ft over Test 2) and charging to a peak horsepower of 376 at 6,000 rpm. We need a build on a 400+ hp 302/6 build. (A starter is a motor, windshield wipers use a motor,electric windows use motors) Any one uses that terminology in my shop will be corrected once, only once. Step 2. JavaScript is disabled. Those are really good numbers. These heads have been remanufactured using refaced reclaimed Factory Valves. Install a set of 1.7:1 roller-tipped rocker arms on the heads. 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. at the crank. They were located in Tahachapi CA, and were sold with upgraded springs for $650.00, back in 2002-2003 ish. All this is worth it. Where they differ is the combustion chamber size. this is the price for one head. GT40P Heads how much hp from them. - StangNet For the most part 302 heads and 351W heads are the same. For this reason, we're not sure what kind of boost the GT-40P heads will give. Click to reveal At the dragstrip, we gained two-tenths and 2 mph. On the power side, we selected 400 hp as an impressive but reasonable output for our small-block 5.0L Ford. Never not once have I ever seen a SBF rod bolt create a failure. 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. The kit offers adjustable power from 50 to 250 hp with a simple jet change. Aside from the cost of the nitrous itself, this setup should cost you little more than a stock rebuild using all brand new parts. This is needed for the steel roller cam. Not sure about that but got some pictures of the cast iron explorer manifolds on a 302. The car weighs #2835 with driver. Instructions on porting the GT-40p heads here. 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. 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. If you know him, ask him. The Fora platform includes forum software by XenForo. GT40P heads, what kind of performance do they give? - FourEyedPride.com Car Craft mag. Gt40p heads - FourEyedPride.com Note the head bolt hole issue, some GT40 iron heads had 1/2 holes, if not they will need to be enlarged. Max hp out of gt 40 heads | Mustang Evolution Forum K.S. E303 Cam advanced 4 degrees. Understanding Ford's Fox Body GT40 Cylinder Heads - CJ Pony Parts Like I said lots of options. Central Coast Mustang sells GT-40P heads at a great price, making them a viable alternative in a market flooded with performance head choices. 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. 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? But the part about a cam replacement possibly being a labor intensive undertaking is correct. Our recommendation would be, rather than change the camshaft, you might want to look into adding a set of long-tube headers and a dual exhaust if the engine is not already so equipped. The fix: basic power upgrades for a sluggish 302 Some ideas never go out of style. We will go into more detail on the head mods in a later story in Junkyard Builder, so watch for it. Every thing he tells you on this site is true. This one added another 10 degrees of duration over the smaller Voodoo cam, along with 0.020 inch more intake valve lift. T5z and 3.89 9" TL rear. The heads that were used were also old C8 casting with 58cc chambers. Well assume it is a 5.0L with stock heads. Learn how your comment data is processed. 351W D0OE-C heads better than GT40P\'s? - Ford Muscle Cars Tech Forum 1 - 7 of 7 Posts. Manual trans. Good Luck. 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. how hard to put on? 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. A mild porting with gasket matching will be very good. SBF FORD Aluminum Cylinder Heads 302 /351w 190cc 62cc 2.02 /1.60 For ROLLER CAM. However I think the opportunity window is slowly closing. 331/347 stroker w/gt40p's, waste?Hp?cost involved? - Maverick Mustang Cylinder Head & Camshaft Guide (79-95) - LMR A LOT of them do it these days. We set the timing to 34 degrees and rejetted the carburetor to get our desired 12.5:1 air/fuel ratio. 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. 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. On slicks the car went some low 7.70s right at 90mph. That's a good combo in my book. Rowe studied engineering, philosophy and American literature at Central Florida Community College. GT-40 heads HP increase | Mustang Forums at StangNet Its NA but makes use of AFR heads and some other aftermarket goodies. 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. timing and compression ratio with gt40p heads - Modded Mustang Forums The heads also required some machine work, including screw-in studs, guideplates, and widening the spring pockets for bigger valvesprings. With the P-heads requiring pedestal-mount rockers, we also called up Crane Cams for a set of 1.6 pedestal-mount roller rockers. 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. I need that part number too! 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). I have a 66 mustang with its original untouched 289 with over 140 k on it that Ive been running a blow thru turbo making 14 lbs of boost on for the last 5 years and its never given me a problem. I'm an old school guy (289 in 65 mustang), and I'm just looking into the new 5.0 engine (roller cam) stuff recently. They almost seem like flywheel numbers rather than RWHP numbers. FORD, SMALL BLOCK 302 HO w/ E7, GT40P & GT40 - Alex's Parts If you can find individual flanged headers like the obsolete MAC headers had, those worked really well with GT40P's. 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. Last Edit: January 18, 2015, 12:05:31 pm by businesstrader Logged shaunp. That's more than enough to feed a power-brake booster. 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. These timeslips are from 1280' above sea level. You will have to address the 50 oz balance of the 5.0 engine by getting a 50 oz flywheel. This is the main reason why these engines are not modified as much as the small block Chevy. Late-model ford GT40 and GT40P heads with 1.84-inch intake valves will also flow 185 cfm at 0.50 . Once you get into the FoMoCo aftermarket aluminum GT40s though, all bets are off. Be careful, I was once bitten by one of those reptile engine builders. 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. Test 3: Installed the larger Lunati camagain, no other changes. After a couple grand you have a killer set of heads, but there's got to be a less-expensive way of making horsepower. If you smooth out the bowls and exhaust ports and gasket match the intakes they should flow decent. Your email address will not be published. The only way to really make more power is to go with a stroker kit, blower and/or heads. GT40 vs GT40P: Who has Smaller Chamber Volume ! More compression For 2018, the Coyote makes 460 hp. '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
Finding Nemo Deleted Scenes Barracuda, Scottie Pippen Finals Stats, Articles OTHER