Test 3: Installed the larger Lunati camagain, no other changes. could the gear of off the oil pump drive(i know they're DIS), for the explorer motor be used on his dizzy? 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. A bone stock 2bbl early 351w with stock replacement forged pistons (9.0 compression) and dyno headers made 211 Hp . Or just play it safe and let the fans ask away about another daring 5.0 TB bolt on or for an exciting surprise, do a LS______ fill in the blanks. 02-11-2012, 07:16 PM #6 fiveoh 86lx I've got gt40p heads for it I'll be running, and can't afford better .
Trick Flow Mustang Valve Spring Upgrade Kit - Cast Iron Head (79-95) When you purchase through links on our site, we may earn an affiliate commission, which supports our community. It turned out we were conservative on both counts. Once the headers are in place, then you can consider if you still want more power.
Get 500 Horsepower from a Junkyard Ford Explorer 302 - MotorTrend i'd love to use these heads,. 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? Skip to main content. The HP DIFF column on the far right lists the horsepower difference between Test 1 and Test 3. For a better experience, please enable JavaScript in your browser before proceeding. The car weighs #2835 with driver. I'd get the gt40 setup, and put an s trim on it. With the P-heads requiring pedestal-mount rockers, we also called up Crane Cams for a set of 1.6 pedestal-mount roller rockers. I've not seen a set of longtubes that have an issue with GT40P's, either. +1 I would go with the regular GT40 heads. Sponsored. Stock 93-95 Cobra shortblock (stock cobra cam), GT40X heads, 1.7 rockers, Edelbrock Performer RPM intake, Holley 650, and longtube headers. We guarantee plenty of burnout action when you add GT-40P heads to your 5.0 Mustang. The reason for this is that we're actually replacing mildly worked E7TE heads. This is a function of the somewhat wider lobe-separation angle of 112 degrees.
How to Build a Cheap Drag Racing 302 Ford Motor | It Still Runs 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. Without changing the stock pistons. The only one that's close, is #7. 1985 Mustang GT Mild 331 4bbl 5 spd, 1985 SEFI LTD LX AOD. 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. 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. The MPH was there to run a little better but the local track is about terrible. Shop by category.
Ford 302W / 5.0L History & Specifications - The Ranger Station In less than an hour, we were ready to test. On slicks the car went some low 7.70s right at 90mph. This modification will help your late-model GT40P heads work better with the old-school carbureted intake setup. First, adding headers will improve power on the existing combination. Depending on the Headers you have you might be okay. With the GT-40P heads you will need to back off the timing a couple degrees and bump up the fuel pressure. 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. I must agree with Jeff Smith. I got lucky and found a complete Explorer GT40P engine online. We were cruising the 'yard a while back and located a 2000 Ford Explorer with an EFI 5.0L V-8 engine. 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. A forum community dedicated to Ford Mustang owners and enthusiasts. I view the GT40P heads similar to Granada brakes. Richard Holdener 240K subscribers Subscribe 63K views 1 year ago WESTECH PERFORMANCE GROUP LOW BUCK, GT40P 5.0L HEADS-CHEAP &. Just make sure it is a roller cam. 68stang351 Founding Member May 16, 2002 850 I guess someone could just do a basic valve job and throw on the GT40 upper/lower intake for a cheap HP boost. Now he serves as a regular contributor to OnAllCylinders.
Junkyard Gt40p Heads-add 30+ Hp to Your 5.0l (For Free?) However I think the opportunity window is slowly closing. 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. If you go with a diffrent cam, make sure you change springs, The Trick Flow kit comes with everything for around $130. Manual trans. #1:::Throw out all your Magazines that suggest what to do! 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. The reply has so many assumptions that I cant even assume to know the answer. If you have a early 351W ie pre 76 it probably . 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. Most all long tubes come out far enough to clear and other short tube headers will work but there is clearance issues on two of the cylinders. For the most part 302 heads and 351W heads are the same. For real performance, stock E7TE heads leave a lot to be desired. That carbureted GT40P motor made 465 on th engine dyno with a .500" 239/244 camshaft, Holley 650 carb and Weiand Stealth intake. I plan on running a AFM b31 cam too which has relatively small duration for the intake valve. 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 . 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! A trip to Orlando Speed World provided us with updated quarter-mile times.
351W D0OE-C heads better than GT40P\'s? - Ford Muscle Cars Tech Forum They were located in Tahachapi CA, and were sold with upgraded springs for $650.00, back in 2002-2003 ish. But the part about a cam replacement possibly being a labor intensive undertaking is correct. 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. Let us explain. Those are really good numbers. MAC is the only manufacturer of these headers, and the parts we installed fit like a glove with no problems whatsoever. With the engine reassembled, we boxed up our second camshaft and headed for Westech's dyno. 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. Required fields are marked *. The heads that were used were also old C8 casting with 58cc chambers. I'd much rather be able to drive it at 8 or 9/10s of what it can handle. Joined . 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? The combination of this cam with your intake and headers will produce a very nice street engine.
REMANUFACTURED FORD 302 5.0 COBRA GT40 CYLINDER HEADS | What's New Building 400hp Into A 5.0L Small-Block Engine - MotorTrend And agree the cams do help and a few tricks with the heads that I have discovered really make a difference. How much HP and torque do you think I. how much HP and torque? VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. FORD GT40p 4 BAR HEADS IN GOOD CONDITION . Calculating pushrod length 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
Don't let the fact that the iron GT40 heads have a larger exhaust valve fool you. 950.00 us a set and will ship . A mild porting with gasket matching will be very good. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. After we installed the heads and with the fan off, he ran a 12.46 at 107.9.
Upgrading Fox Body Cylinder Heads - AmericanMuscle.com fuel injection system . Long tube headers are a terrific idea, but you need to open up the exhaust side. This will cost additional money but is still worth it, in our opinion. I have to agree, the GT40P heads flow better than the GT40 iron heads. this is the price for one head. We heated the bottle to 950 psi and hit the button at 4,500 rpm. The spark plug issue is almost a non-issue. Come join the discussion about performance, production numbers, VIN decoders, modifications, troubleshooting, power adders, DIY tutorials, and more! Mac and Ford Motorsport both make a GT40P spacific header. These heads have been remanufactured using refaced reclaimed Factory Valves. We need a build on a 400+ hp 302/6 build. We know what you're thinking--only two-tenths from an extra 45 hp? BONUS TEST-FOUR DIFFERENT 302 INTAKES.. by travis Sun May 03, 2020 8:33 am. Because of this, your tuneup will probably need to be modified. Choose a cylinder head before you install the pistons. Good Luck. I'm also have the regular GT40 heads on my current build. The multiple-layer steel construction allows the gasket to conform to movement between the cylinder head and block while maintaining a good seal. It took him and yours truly eight hours from start to finish, using air tools and a lift to gain access to the header flanges. If you can get the mentioned GT-40 heads with studs for a good price, that would be good for you. While the heads were off getting a massage, we turned our attention to the cam timing. I turned it because it was tired when I got it. All this is worth it. It's an 86 roller 5.0 engine that had a recent rebuild sometime in the past with keith black pistons, otherwise stock. There are caveats to this plan, however. Note the head bolt hole issue, some GT40 iron heads had 1/2 holes, if not they will need to be enlarged. I recall having an absolute blast with my old K-code coupe back in the day. that is a healthy budget deal. GT40Ps have 58cc. Ha! I don't need tons of power to enjoy the car. 402 HP NA from a HI PO 289 isnt that mysterious of a feat to accomplish with todays SBF Aftermarket parts availability. Cant wait to try um out. GT40, GT40P, would be great factory heads. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. 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. 1986 Short block with notched pistons. THANKS VERY MUCH! I have a 302 Windsor V8 EFI engine that I converted to a 600 cfm carburetor with a Street Warrior intake manifold. I have been working on Fords for 40 years and I have experimented with a few tricks of my own. This is just a quick overview of the changes that need to be done.
GT40P heads? how hard to put on? how much HP and torque? Central Coast Mustang sells GT-40P heads at a great price, making them a viable alternative in a market flooded with performance head choices.
302HO with gt40p heads | Mustang Forums at StangNet Speedmaster PCE281.2046 Small Block Ford Aluminum Cylinder Heads 62cc Related Resources Mustang Generation Nicknames: What Do They Mean? how hard to put on? Sponsored. The action you just performed triggered the security solution. For those of you running a carb, or aftermarket intake, you already have a leg up in this area and should see even greater gains in power. 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. This test went so well that we were eager to see what the slightly bigger cam would do. Free shipping. Come join the discussion about performance, builds, modifications, reviews, engine swaps, classifieds, troubleshooting, maintenance, and more! The Edelbrock Performer RPM is a good choice, but Holley, Weiand and Ford Motorsport also have similar offerings. I bought a crate 302 from Downs Ford a few years ago that was producing 320 hp. Yeah, except those. a) ain't early and b) aren't 289 heads. Holten runs the factory fan, but he had removed it when he ran the 12.63. 69.90.139.244 Come join the discussion about popular models such as the Mustang, Galaxie, Falcon, Fairlane, Torino, Shelby and many more! VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Every thing he tells you on this site is true. Ford GT40P 302 5.0L 4 Bar Cylinder Head Assembly Pair w/ 1/2" Head Bolt Hole. They work, but present their own challenges. I may do some port matching and a little cleanup, otherwise just a set of springs and cam and see what I have. 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. Horse Sense: The smaller valves found in GT-40P heads improve airflow velocity. That's an improvement of 22 hp over Test 2.
Posted on May 07, 2014 by promarengine. The '00 Ford Explorers and Mercury Moutaineers were factory equipped with one of Ford's better 5.0L motors. Using the manufacturer recommended springs for your camshaft are a safe bet. Theres many options available for a little more power. 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. 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. The later model distributors had a different diameter shaft than the earlier ones. Install a set of GT-40P cylinder heads from a late 1990's Ford Explorer or a set of GT40 heads from an early 1990's Mustang 5.0L. For the first test, we were reusing the stock Explorer cam, so the engine didn't need any break-in time.
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. Add a distributor designed for a carbureted 302 but make sure to install the correct distributor gear for your cam. The valve seats have been cut on a . Tim's junkyard refugee survived the beating and we had a bitchin' story. You can have your current 28 oz rebalanced to 50. In mid-1997, the Explorer and Mountaineer 5.0 L heads were revised and renamed . JUNKYARD GT40P HEADS-ADD 30+ HP TO YOUR 5.0L (FOR FREE?) The only way to really make more power is to go with a stroker kit, blower and/or heads. Yes- thank you. Smith began writing for Car Craft magazine in 1979 and became editor in 1984. Im a different animal. 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. Assuming the above configurationa pushrod 5.0L will potentially make between 250 and 260 hp. Not looking for crazy HP. 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. .. i would not buy valves unless you need them amd would not switch to studs with these heads for your low hp . We also added an Edelbrock Performer RPM dual-plane intake and a set of 158-inch headers with no mufflers. That said there are some better aftermarket options for heads also.
GT-40 heads HP increase | Mustang Forums at StangNet 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. Weiand 7515 xcellerator intake. (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. Definitely going to use my P heads. For 2018, the Coyote makes 460 hp. Slover primarily focused on the exhaust side of the GT40P heads. Adding the headers may also require a slight increase in secondary (and possibly primary) jetting to ensure the proper air-fuel ratio, but thats also an easy tuning change. Small-block Fords and Mopars only use four head bolts per cylinder, so retaining proper head-gasket sealespecially with nitrousis a point that demands attention, so we ordered a set of Fel-Pro MLS head gaskets rather than a standard, composition gasket. K.S. Install a used set of 5.0L Mustang "shorty" headers, generally available at auto swap meets for a reasonable price. The entire front accessory drive and timing chain cover must be removed, along with the distributor and intake manifold. Purchase any used aftermarket manifold for the 302 that is designed to function in the 3,500 to 6,500 power band.
What Are The GT40 & GT40P Heads? - LMR.com JavaScript is disabled. I need that part number too! They also have emissions legal heads as well. 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.
A bit of info for those looking to build 300+hp 5.0L/302s Dennis Hilliard of Central Coast says we can expect to gain three-tenths in the quarter-mile. The GT40P cylinder heads had a small combustion chamber ranging from 58-61cc while the GT40 heads had a 63-66cc combustion chamber. I am very happy too. I had a set of 69 302 heads I ran for a while . I used Lightning heads on my 302, (GT40 not P) with stock rockers on a flat tappet engine. We also added a veteran Ford magnetic pickup distributor and used it to drive an MSD ignition system.
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. The GT40P heads flow a lot better than stock 351 heads. Over $2050 for the 165/185 renegades. 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. Do not ever, ever think about using the tube type manifolds. With. The hardest part of swapping the cam was just getting the timing cover off and back on again. The factory heads have a boss for the exhaust valve that restricts flow through the exhaust port. Free shipping for many products! 68 XR7 & 68 M-100. I added a link to it.
Budget 300HP 302 Build bmcdaniel, Feb 17, 2004 #7. v8maverick Member. JavaScript is disabled. An aggressive cam will wake it up a bit. Take the assembly to a machine shop to have it balanced and install it in the block. This is the main reason why these engines are not modified as much as the small block Chevy. He'd be the best source. Start with any 302 block, but try to find one from 1985 and up since it will already have provisions for a roller camshaft. 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. 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.
Mild Build Gt40p A COMP hydraulic roller cam we found works well with this combination. 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. 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. 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). No-option stripper- I like strippers. SB Ford, GT40 .575" Lift Max Output II Drop in Valve Spring Kit, Hyd Roller, 140 Lb Seat. never messed with the timing, its at 35* total . Both swaps made more sense when parts were readily available at the bone yard for cheap. They are more expensive than standard head gaskets, but they also do the job and are worth the additional money. 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. For this reason, we're not sure what kind of boost the GT-40P heads will give. We gained 45 hp and 40 lb-ft of torque. 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. built one using a 91' HO short block with a set of AFR 165 heads, Weiand . 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.
Dyno results GT40P heads | Vintage Mustang Forums I was looking at putting on the GT40P heads on. Ford's seminal 302 engine (later re-dubbed the 5.0) has been popular with budget-minded hot rodders for decades. 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. 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. GT40s have 64cc chambers. 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. Do you guys have part numbers for the spring kits? Its always refreshing to see a FORD getting a little face time in your column, even if its a tired 302 with no great expectations of setting the world on fire when the dust settles. Both have very similar valve sizes, but the GT40P head has slightly larger combustion chambers for a small bump in compression and better flow. All Ford Mustangs | Model Specific Forums, GT-40P Heads - 5.0 Mustang & Super Fords Magazine. It runs smooth but seems lazy. The Fora platform includes forum software by XenForo. T5z and 3.89 9" TL rear. AFR 165cc 58cc Heads. Not sure about that but got some pictures of the cast iron explorer manifolds on a 302. Holley 670 street avenger carb. 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. Calculated compression to 9.8:1.