They suffered from poor aftermarket support up until about 15 years ago when it really came on strong. First, adding headers will improve power on the existing combination. 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. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 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. Thank You. 1.7 shaft rockers and beehives. Add a distributor designed for a carbureted 302 but make sure to install the correct distributor gear for your cam. I must agree with Jeff Smith. 02-11-2012, 07:16 PM #6 fiveoh 86lx 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. Motor is going into a Ranger. 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. We did a quick search for hydraulic roller cams and landed on a COMP camshaft that looked promising. 331/347 stroker w/gt40p's, waste?Hp?cost involved? - Maverick A good port job can set you back another $500-$1,000. Over $2050 for the 165/185 renegades. Supercharging GT40p heads | Modded Mustang Forums T5 with 3.73s. Holley 670 street avenger carb. Ask Away! with Jeff Smith: Camshaft and Cylinder Head Recommendations built one using a 91' HO short block with a set of AFR 165 heads, Weiand . check out the. 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. 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. 1986 Short block with notched pistons. Overview. 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. 1996-2001 Ford Explorer 5.0L V8 Specifications When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Posted on May 07, 2014 by promarengine. They almost seem like flywheel numbers rather than RWHP numbers. 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. Not sure how they would mate up to your existing exhuast, but otherwise they should work. A mild porting with gasket matching will be very good. Slover primarily focused on the exhaust side of the GT40P heads. PTP Engineering front suspension and 25540R17s all around. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. 99 Explorer engine (302) with GT40P heads - Ford Muscle Cars Tech Forum that is a healthy budget deal. Their weak point is that the rotator used on the exhaust valve is very thick. GT40P heads, what kind of performance do they give? - FourEyedPride.com VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. This test went so well that we were eager to see what the slightly bigger cam would do. It runs smooth but seems lazy. JavaScript is disabled. 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. What would be the best cam and springs to use for these heads in a 302 Windsor? I went to a couple in Tucson and almost all the Ford vehicles that came with a 5.0 had the heads missing. GT40s have 64cc chambers. 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. SBF FORD Aluminum Cylinder Heads 302 /351w 190cc 62cc 2.02 /1.60 For ROLLER CAM. Best of all, no machining is required to install these on your stock cast iron heads! In less than an hour, we were ready to test. They are more expensive than standard head gaskets, but they also do the job and are worth the additional money. 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. E303 Cam advanced 4 degrees. LOW-BUCK 302 FORD HEAD UPGRADE - YouTube Test 1: 750-cfm carburetor, dual-plane intake manifold, and stock camshaft. Actually, making around 240 to 250 hp with a near-stock Windsor 302 will feel pretty good. i've got a short block started, and i recently came across a set of GT40P heads for FREE ( love family members). This needs to be removed and different exhaust valves, retainers, and valve springs added to turn this into a decent street head. Ill do springs and a moderate cam and go for a good, dependable power plant. GT 500; Posts: 8496; Location: Brisbane . could the gear of off the oil pump drive(i know they're DIS), for the explorer motor be used on his dizzy? We guarantee plenty of burnout action when you add GT-40P heads to your 5.0 Mustang. These timeslips are from 1280' above sea level. We started with a 120,000-mile 5.0L out of a Ford Explorer, removed the EFI and DIS, and pocket ported the stock GT40P iron heads with stock valve sizes. The later model distributors had a different diameter shaft than the earlier ones. We also added a veteran Ford magnetic pickup distributor and used it to drive an MSD ignition system. Consider having the head's intake ports matched to the intake manifold gasket. A trip to Orlando Speed World provided us with updated quarter-mile times. Mustang Cylinder Head & Camshaft Guide (79-95) - LMR 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. LOW-BUCK 302 FORD HEAD UPGRADE Richard Holdener 239K subscribers 189K views 2 years ago WESTECH PERFORMANCE GROUP WHAT'S IT WORTH? Weiand 7515 xcellerator intake. The GT40P heads had a small combustion chamber ranging from 58-61cc while the GT40 heads had a 63-66cc combustion chamber. Definitely going to use my P heads. 68 XR7 & 68 M-100. Come join the discussion about restoration, modifications, NOS parts, troubleshooting, VIN codes, and more! 69.90.139.244 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. On slicks the car went some low 7.70s right at 90mph. JUNKYARD GT40P HEADS-ADD 30+ HP TO YOUR 5.0L (FOR FREE?) The engine was only rated at 215 hp, but it at least had 9.0:1 compression. Be careful, I was once bitten by one of those reptile engine builders. Smith began writing for Car Craft magazine in 1979 and became editor in 1984. Gasoline/Diesel all makes on earth & still doing it today with great pride.Feel free to contact me anytime. Rowe studied engineering, philosophy and American literature at Central Florida Community College. Location: Re: Stock Ford 351W 4bbl dyno numbers. 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. I'd get the gt40 setup, and put an s trim on it. GT-40 heads HP increase | Mustang Forums at StangNet FORD GT40p 4 BAR HEADS IN GOOD CONDITION . P-heads have a smaller combustion chamber at 59cc, which will bump the compression ratio up on an otherwise-stock 5.0 engine. 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. thats after 3 hours of idling/midrange hits to tune the idle and part throttle . If you wanted to make your engine feel strong, these would be a decent investment, but they will require some modifications. Plus you will need to drill all the head bolt holes out as the 351W uses larger head bolts. (its not their engine) 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. JavaScript is disabled. That's an improvement of 22 hp over Test 2. A COMP hydraulic roller cam we found works well with this combination. . There are too many variables to add to this regarding aftermarket stroker kits or components. You can email the site owner to let them know you were blocked. 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. I need that part number too! There are a couple of reasons for this suggestion. ford 302 sbf gt40p v8 cast iron complete cylinder head and head bolts and head gasket set. Horse Sense: The smaller valves found in GT-40P heads improve airflow velocity. this head fits years 95-01 explorer mountaineer mercury mountaineer . In addition, the cam timing was designed for torque, with duration somewhere around 190 degrees at 0.050 with roughly 0.450-inch lift. 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! I turned it because it was tired when I got it. This 1979-1995 Mustang cylinder head and camshaft guide will overview the heads and cams we offer and how they will coincide. Per a UEM tech support email I have the Icon IC736 is supposed to be good for GT40 heads when I asked about it. Car Craft mag. Both swaps made more sense when parts were readily available at the bone yard for cheap. Click to reveal If you have a early 351W ie pre 76 it probably . 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. These are a great head but do need some machining mods to make they really work well. They fill that spot between power and budget. SB Ford GT40P Drop In Valve Springs Kit, Hyd Roller w/ Stock Cam, .450" lift and below. Some ideas never go out of style. REMANUFACTURED FORD 302 5.0 COBRA GT40 CYLINDER HEADS | What's New 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. Your IP: Dennis Hilliard of Central Coast says we can expect to gain three-tenths in the quarter-mile. 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. 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. +1 I would go with the regular GT40 heads. A forum community dedicated to Ford Mustang owners and enthusiasts. Gt40p heads - FourEyedPride.com The only one that's close, is #7. BONUS TEST-FOUR DIFFERENT 302 INTAKES.. The heads that were used were also old C8 casting with 58cc chambers. 302 with GT40 heads | Ford Mustang Forums Upgrading Fox Body Cylinder Heads - AmericanMuscle.com Compare. Well that article just got me very ancy, I want these heads!! VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. We've already been motivated to put this engine in a buddy's Mustang. Depending on the Headers you have you might be okay. A forum community dedicated to Ford Mustang owners and enthusiasts. HiPo manifolds and Ill be good. SB Ford, GT40 .575" Lift Max Output II Drop in Valve Spring Kit, Hyd Roller, 140 Lb Seat. Anyways, I know the gt40ps will bump . Free shipping. 950.00 us a set and will ship . Budget 300HP 302 Build Yes- thank you. Speedmaster PCE281.2046 Small Block Ford Aluminum Cylinder Heads 62cc Don't let the fact that the iron GT40 heads have a larger exhaust valve fool you. MAC is the only manufacturer of these headers, and the parts we installed fit like a glove with no problems whatsoever. If you can find individual flanged headers like the obsolete MAC headers had, those worked really well with GT40P's. For a better experience, please enable JavaScript in your browser before proceeding. 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 1.7:1 roller-tipped rocker arms on the heads. 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. They work, but present their own challenges. Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) - GT40P heads? 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. 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. For both the GT40 and GT40p heads, I STRONGLY suggest upgrading the valve springs. After a couple grand you have a killer set of heads, but there's got to be a less-expensive way of making horsepower. Different years can have different combustion chamber sizes but ffor the most part there will be no performance increases by going with 302 heads. Calculating pushrod length 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. 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. Ford GT40P 302 5.0L 4 Bar Cylinder Head Assembly Pair w/ 1/2" Head Bolt Hole. Just make sure it is a roller cam. What did the heads flow? Works on all factory cast iron E7, GT40, and GT40P cylinder heads! Stock heads with a fresh 3-angle valve job, shorty headers, T5, 4.10s, stock Explorer intake and stock '88 GT short block with 140,000 miles on it and an E cam in it. Headers and a camshaft will help but the engine really needs aftermarket 3/8 inch connecting rod bolts and aftermarket cylinder heads. Very true about finding them at the local yards. I had those on my car before I upgraded and they were nice heads. 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. 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. Dec 8, 2011. '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 The reason for this is that we're actually replacing mildly worked E7TE heads. I was looking at putting on the GT40P heads on. Good on ya Jeff Smith. Yeah, out of a bolt on upgrade, you'd probably be looking at 260-280rwhp ish with supporting mods. I have a very good running stock 1981 302 in a F100 short box. Well offer one as an example. at the crank. This will cost additional money but is still worth it, in our opinion. Free shipping for many products! Just got through porting one of my gt40p heads today. 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. Good Luck. The GT40 & GT40P heads had a few differences that are note-worthy, the most importantly being the bump in compression. 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. As noted, this is looking like hes building a 351 Lightning truck motor, which is a good way to go. With nitrous, this is easily a mid-11-second ride. 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. We heated the bottle to 950 psi and hit the button at 4,500 rpm. I'll prob take a trip up there this weekend after scavenging the junkyards, thanks a million. I got lucky and found a complete Explorer GT40P engine online. 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. 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. 302 GT40 Dyno Results - FourEyedPride.com FORD, SMALL BLOCK 302 HO w/ E7, GT40P & GT40 - Alex's Parts JavaScript is disabled. 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). Find many great new & used options and get the best deals for FORD GT40p 4 BAR HEADS IN GOOD CONDITION w/ONE BOLT BROKEN at the best online prices at eBay! 302 .030 over with; Scat Forged Steel Rods, SpeedPro pistons and rings . I can tell you that with my 9.503 block, 22cc dished pistons and 64cc heads, I'm at 9.5:1 compression. Have fun, be safe, enjoy. I have a 5.0 from a 1992 Mustang in my 65. 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. As with Chevrolet's small-block engine, the aftermarket has had dozens of years to expand the range and reduce the cost of the parts they offer for this engine. There are a lot of variables that must be addressed to give a better estimate, but a good basic estimate is 20-40 HP at the crank. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. We didn't increase the valve size, although we did have to add Manley valves to get the proper spring-installed height. An aggressive cam will wake it up a bit. I am working on a set of iron GT40s hoping it goes faster. For 2018, the Coyote makes 460 hp. I'm using the Trick Flow stage 1 cam with 1.7 roller rockers. There are caveats to this plan, however. i have a 302 engine from a 1977 granada and i am wondering if gt40p heads from an explorer will fit on this motor. Enter your search keyword. I'm sure the dyno operator used some goofball correction factor to make the numbers look higher. Along with the heads, we used MAC headers for GT-40P heads. While the heads were off getting a massage, we turned our attention to the cam timing. JEGS High Performance. 289 or 351 heads on a 302 advantage? | The H.A.M.B. I was thinking the same but the enforcers are $647ea now so $1400 (inc tax) is the entry price for good set of heads. With no other changes we gained 25 hp using factory iron heads. The cost of a new set of standard replacement roller lifters is very affordable at major retailers like Summit. AFR 165cc 58cc Heads. The rest went very smoothly, and we reused the stock lifters and suffered no ulcers worrying about breaking in the cam. Add 40 to 70 HP to your 302 yourself - Factory Five Racing Forum These are some of the best castings Ford ever produced for this engine, and are still fairly cheap and available used. I've got gt40p heads for it I'll be running, and can't afford better . made more power everytwhere and 40 hp is respectable. Perhaps even more surprising was how well this engine idled, calmly purring with 16 inches of manifold vacuum at 980 rpm. As with all head installations, check piston-to-valve clearance before final startup. Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. This combination should be good for about 400 horsepower and as much as 500 if you opt to use the stronger aftermarket pistons. Gt40 heads/intake from a jy explorer, leave the . 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. Holten tells us removing the fan is worth two-tenths in itself, which tells us the fan soaks up roughly 20 hp. Install a Ford Motorsport E303, X303 or F303 cam, or any of the similar units from Indy, Lunati or your favorite manufacturer. They were located in Tahachapi CA, and were sold with upgraded springs for $650.00, back in 2002-2003 ish. Now we know why Dennis Hilliard of Central Coast Mustang is so high on these heads. Ford Explorer Mountaineer 5.0 Ohv Iron 302 Sbf In a lightweight Fox or early Mustang with a five-speed behind it, this would be a great little street engine. The Fora platform includes forum software by XenForo. The fix: basic power upgrades for a sluggish 302 No-option stripper- I like strippers. SBF engines are modified constantly. The GT40 heads have thermactor holes built in to connect to the EGR/smog equipment whereas the GT40P heads use an external EGR connective system. Commonly referred to as Explorer heads, GT-40P iron castings are found on current 5.0-equipped Explorers. I had a set of 69 302 heads I ran for a while . how hard to put on? You keep stock drivability, and stock gas milage if you can stay out of boost. For real performance, stock E7TE heads leave a lot to be desired. Keywords It's an 86 roller 5.0 engine that had a recent rebuild sometime in the past with keith black pistons, otherwise stock. FULL DYNO RESULTS. With. You will have to address the 50 oz balance of the 5.0 engine by getting a 50 oz flywheel. Test 2: Changed to the smaller of the two Lunati camshaftsno other changes. Actually, making around 240 to 250 hp with a near-stock Windsor 302 will feel pretty good. Once you get into the FoMoCo aftermarket aluminum GT40s though, all bets are off. Vehicle: 1972 2 door 302 maverick, 1986 5.0 stang gt convertible,66 mustang coupe, HEMI ram. I've not seen a set of longtubes that have an issue with GT40P's, either. If you smooth out the bowls and exhaust ports and gasket match the intakes they should flow decent.