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could the gear of off the oil pump drive(i know they're DIS), for the explorer motor be used on his dizzy? Well assume it is a 5.0L with stock heads. So I've got the motor and heads already for my maverick project. Step 1. Horse Sense: The smaller valves found in GT-40P heads improve airflow velocity. I don't need tons of power to enjoy the car. Instructions on porting the GT-40p heads here. how much HP and torque? made more power everytwhere and 40 hp is respectable. Headers and a camshaft will help but the engine really needs aftermarket 3/8 inch connecting rod bolts and aftermarket cylinder heads. fuel injection system . 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. The HP DIFF column on the far right lists the horsepower difference between Test 1 and Test 3. 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. This time around, we chose a shining example of this junkyard art form. This will follow the guideline of a 1.6 rocker baseline and factory bottom end 79-95 related 5.0L Mustangs only. Sponsored. GT40s have 64cc chambers. 950.00 us a set and will ship . These are some of the best castings Ford ever produced for this engine, and are still fairly cheap and available used. Richard Holdener 240K subscribers Subscribe 63K views 1 year ago WESTECH PERFORMANCE GROUP LOW BUCK, GT40P 5.0L HEADS-CHEAP &. You keep stock drivability, and stock gas milage if you can stay out of boost. thats after 3 hours of idling/midrange hits to tune the idle and part throttle . 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. Stock 1989 5.0L HO pistons will work if you can find them. The gt40p head is considered the best OEM 302 head made. AFR 165cc 58cc Heads. 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. Per a UEM tech support email I have the Icon IC736 is supposed to be good for GT40 heads when I asked about it. Most of the time, GT-40 heads are worth a good 20-40hp over stock heads. SB Ford GT40P Drop In Valve Springs Kit, Hyd Roller w/ Stock Cam, .450" lift and below. 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. 402 HP NA from a HI PO 289 isnt that mysterious of a feat to accomplish with todays SBF Aftermarket parts availability. The entire front accessory drive and timing chain cover must be removed, along with the distributor and intake manifold. I had a set of 69 302 heads I ran for a while . The GTp heads are like GT 40's with smaller combustion chambers and the spark plugs are relocated for a more efficient burn. These heads have been remanufactured using refaced reclaimed Factory Valves. The GT40P heads flow a lot better than stock 351 heads. I just read about this build on the You can use the stock roller lifters with any size cam you want. Not sure how they would mate up to your existing exhuast, but otherwise they should work. 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. 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. Within a few hours of his discovery, the engine was sitting in the back of his truck on its way to a new home. Even with relatively small valve sizes of 1.85-inch intake and 1.46-inch exhaust, the P-heads flow much better than previous. Plus you will need to drill all the head bolt holes out as the 351W uses larger head bolts.,, 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 Perhaps even more surprising was how well this engine idled, calmly purring with 16 inches of manifold vacuum at 980 rpm. Now we know why Dennis Hilliard of Central Coast Mustang is so high on these heads. There are literally a dozen or so camshaft companies that offer a mild hydraulic roller cam for a 5.0L Ford. Anythoughts? I had those on my car before I upgraded and they were nice heads. That's fantastic for the minimal investment we made. That's more than enough to feed a power-brake booster. Come join the discussion about restoration, modifications, NOS parts, troubleshooting, VIN codes, and more! 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. 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. 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. Nice to see actual dyno results instead of "butt dyno" guesses. We decided on a Powerstar kit from Nitrous Supply, owned by our good friend Mike Thermos, who was one of the original nitrous kit suppliers back in the early '80s. A trip to Orlando Speed World provided us with updated quarter-mile times. While the heads were off getting a massage, we turned our attention to the cam timing. i'd love to use these heads,. 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. 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. The question was whether we wanted a torquey small-block or a more cammed-up rpm engine to boost peak horsepower. Late-model ford GT40 and GT40P heads with 1.84-inch intake valves will also flow 185 cfm at 0.50 . I turned it because it was tired when I got it. $169.50. Come join the discussion about popular models such as the Mustang, Galaxie, Falcon, Fairlane, Torino, Shelby and many more! I am very happy too. Free shipping. this head fits years 95-01 explorer mountaineer mercury mountaineer . VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Is asking advice for a fairly common situation involving parts with mandatory compatibility between the two for performance and longevity. This modification will help your late-model GT40P heads work better with the old-school carbureted intake setup. Ford offered a performance head that was a stock part on 1993-1995 Mustang Cobra models and pre- 1997-1/2 Ford Explorers and Mercury Mountaineers equipped with the 5.0 L engine called the GT-40 head (casting ID F3ZE-AA). PTP Engineering front suspension and 25540R17s all around. I got a set of AFR heads , night and day. These engines came with the GT40P head, which even with its small valves, offers really good performance. the engine is carburated of that makes a difference. 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. Richard Rowe has been writing professionally since 2007, specializing in automotive topics. Early Windsors tend to have fairly restrictive exhaust manifolds, making the addition of a set of headers that much more efficient. Tim's junkyard refugee survived the beating and we had a bitchin' story. After we installed the heads and with the fan off, he ran a 12.46 at 107.9. 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. While we've seen engine dyno tests performed with GT-40P heads replacing factory E7TE castings and resulting in a boost of more than 25 hp, we have reluctantly set our horsepower gain goal at 25 ponies, as well. I'm also have the regular GT40 heads on my current build. Holley 670 street avenger carb. Related Resources Mustang Generation Nicknames: What Do They Mean? After a couple grand you have a killer set of heads, but there's got to be a less-expensive way of making horsepower. The heads also required some machine work, including screw-in studs, guideplates, and widening the spring pockets for bigger valvesprings. Your email address will not be published. SBF FORD Aluminum Cylinder Heads 302 /351w 190cc 62cc 2.02 /1.60 For ROLLER CAM. 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. Have fun, be safe, enjoy. In mid-1997, the Explorer and Mountaineer 5.0 L heads were revised and renamed . The Edelbrock Performer RPM is a good choice, but Holley, Weiand and Ford Motorsport also have similar offerings. If they are cheap enough, take them anyway. Many years ago, a friend bought a used 2001 Mercury Mountaineer 5.0L that was equipped with a set of really decent GT40P style iron heads. Runs well. 1983 Mustang G.T. 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! Nudge us with emails, and we'll make it happen. 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. Compare. For the most part 302 heads and 351W heads are the same. You need to check. 97% Positive Feedback . VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. If you have a early 351W ie pre 76 it probably . 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. On slicks the car went some low 7.70s right at 90mph. It runs smooth but seems lazy. Install a used set of 5.0L Mustang "shorty" headers, generally available at auto swap meets for a reasonable price. If you go with a diffrent cam, make sure you change springs, The Trick Flow kit comes with everything for around $130. Here is my setup. (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. We've already been motivated to put this engine in a buddy's Mustang. Features hardened 4140 Chromoly retainers, valve locks, spring shims, a spring height gauge, valve seals, and instructions. Hey all, I'm working on building a 302 with my gt40p heads. JEGS High Performance. Yep my **** is coming apart again Isnt life great! Gt40 heads/intake from a jy explorer, leave the . For this reason, we're not sure what kind of boost the GT-40P heads will give. These are a great head but do need some machining mods to make they really work well. Shop by category. 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 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. There are caveats to this plan, however. Start with any 302 block, but try to find one from 1985 and up since it will already have provisions for a roller camshaft. There are too many variables to add to this regarding aftermarket stroker kits or components. As with all head installations, check piston-to-valve clearance before final startup. Different years can have different combustion chamber sizes but ffor the most part there will be no performance increases by going with 302 heads. 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. The engine never huffed oil out of the breathers, and the spark plugs all looked excellent. I guess someone could just do a basic valve job and throw on the GT40 upper/lower intake for a cheap HP boost. I got lucky and found a complete Explorer GT40P engine online. As a final goal, we decided to bolt on a simple nitrous system and see if we could push this little small-block Ford to make some real power. SBF engines are modified constantly. $139.99. 1985 Mustang GT Mild 331 4bbl 5 spd, 1985 SEFI LTD LX AOD. 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. Long tube headers are a terrific idea, but you need to open up the exhaust side. You will have to get special headers to fit these heads since the spark plugs are angled differently than normal 5.0 heads. 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. Also, you'll need to get a steel distributor gear to replace the iron gear that is currently on your distributor. The results were a major increase in power throughout the entire rev range, with an increase of 60hp at 4500rpm through to a peak of 279hp at 5800rpm. We need a build on a 400+ hp 302/6 build. Maybe I'll think about a cam swap? Dennis Hilliard of Central Coast says we can expect to gain three-tenths in the quarter-mile. JavaScript is disabled. I guess I had it backwards, sorry about that, didn't mean to spread misinformation. P-heads have a smaller combustion chamber at 59cc, which will bump the compression ratio up on an otherwise-stock 5.0 engine. MAC is the only manufacturer of these headers, and the parts we installed fit like a glove with no problems whatsoever. Stock 93-95 Cobra shortblock (stock cobra cam), GT40X heads, 1.7 rockers, Edelbrock Performer RPM intake, Holley 650, and longtube headers. 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. 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. 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. But the part about a cam replacement possibly being a labor intensive undertaking is correct. SB Ford GT40 Drop In Valve Springs Kit, Hyd Roller w/ Stock Cam, .450" lift and below. 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. 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. Choose a cylinder head before you install the pistons. Never not once have I ever seen a SBF rod bolt create a failure. For all of us interested in Gt40p heads. Holten runs the factory fan, but he had removed it when he ran the 12.63. You might even say its like flogging a dead horse without any animals actually being injured during my moments of sarcasm. Ill do springs and a moderate cam and go for a good, dependable power plant. For a better experience, please enable JavaScript in your browser before proceeding. Because its all been done time after time after. But don't think that adding a bigger camshaft will make more power. well i finally did my first ever carb build, ive always been an EFI guy Black 1985 GT: 408w, in the 6's in the 1/8 mile. I went to a couple in Tucson and almost all the Ford vehicles that came with a 5.0 had the heads missing. 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. The action you just performed triggered the security solution. Yea. I used Lightning heads on my 302, (GT40 not P) with stock rockers on a flat tappet engine. In less than an hour, we were ready to test. Both swaps made more sense when parts were readily available at the bone yard for cheap. Once you get into the FoMoCo aftermarket aluminum GT40s though, all bets are off. The reason for this is that we're actually replacing mildly worked E7TE heads. Good Luck. I was thinking the same but the enforcers are $647ea now so $1400 (inc tax) is the entry price for good set of heads. Very true about finding them at the local yards. I have to agree, the GT40P heads flow better than the GT40 iron heads. Actually the regular gt40's in either aluminum or iron are the good ones but the gt40p's are only a slight improvement over regular 302 heads. Took me 7 hours to do one head.but they cleaned up real nice.

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