302 with gt40p heads horsepowerbreeze airways headquarters phone number

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. Pride is built, in your garage, with your two hands. 1985 Mustang GT Mild 331 4bbl 5 spd, 1985 SEFI LTD LX AOD. $700.98. Is asking advice for a fairly common situation involving parts with mandatory compatibility between the two for performance and longevity. This test went so well that we were eager to see what the slightly bigger cam would do. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. It has underdrive pulleys, MSD ignition, Bassanni headers and forward exit exhaust. I had a set of 69 302 heads I ran for a while . You need to check. The GT40 & GT40P heads had a few differences that are note-worthy, the most importantly being the bump in compression. Depends on the budget. All this is worth it. Install a set of 1.7:1 roller-tipped rocker arms on the heads. 1983 Mustang G.T. Perhaps even more surprising was how well this engine idled, calmly purring with 16 inches of manifold vacuum at 980 rpm. Took me 7 hours to do one head.but they cleaned up real nice. The newer camshaft is designed for use with a soft bronze distributor gear, not the hardened steel gear used for older camshafts. 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 Fora platform includes forum software by XenForo. made more power everytwhere and 40 hp is respectable. After graduating from Iowa State University with a journalism degree in 1978, he combined his two passions: cars and writing. The factory heads have a boss for the exhaust valve that restricts flow through the exhaust port. These are some of the best castings Ford ever produced for this engine, and are still fairly cheap and available used. Jeff Smith has had a passion for cars since he began working at his grandfather's gas station at the age 10. This is the main reason why these engines are not modified as much as the small block Chevy. 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. 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. If you dont feel comfortable doing this higher a pro. With nitrous, this is easily a mid-11-second ride. Even with relatively small valve sizes of 1.85-inch intake and 1.46-inch exhaust, the P-heads flow much better than previous. Commonly referred to as Explorer heads, GT-40P iron castings are found on current 5.0-equipped Explorers. The 5.0L with the GT40 head had a 9.0:1 compression, and the 5.0L with the GT40P head had 9.1:1 compression. bmcdaniel, Feb 17, 2004 #7. v8maverick Member. Mac and Ford Motorsport both make a GT40P spacific header. Gasoline/Diesel all makes on earth & still doing it today with great pride.Feel free to contact me anytime. JEGS High Performance. The engine was only rated at 215 hp, but it at least had 9.0:1 compression. If we subtract the 20 hp that the fan is worth, we end up with a gain of 25 hp. 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. 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 used Lightning heads on my 302, (GT40 not P) with stock rockers on a flat tappet engine. If the head bolt holes are 1/2" or slightly larger, ARP makes the washers and can be sourced from Ford Racing or ARP through a speed shop or Summit, Jegs and PAW among others. the engine is carburated of that makes a difference. I have heard this rod bolt weakness myth for years but have yet to have a single problem with them in any of the SBF engines I have pounded on for the last 30 years and there have been lots of them. 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. Gt40 heads/intake from a jy explorer, leave the . Im now thinking of adding a cam to match the carb. Both have very similar valve sizes, but the GT40P head has slightly larger combustion chambers for a small bump in compression and better flow. A COMP hydraulic roller cam we found works well with this combination. Click to reveal I spin it to 6500 and thats about it. 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? I have managed to get 402 horse power from a 289 hipo natural aspirated. This will follow the guideline of a 1.6 rocker baseline and factory bottom end 79-95 related 5.0L Mustangs only. No-option stripper- I like strippers. We didn't increase the valve size, although we did have to add Manley valves to get the proper spring-installed height. A solid 300-325 hp should be plenty and that's with good drivability and reliability as well. In less than an hour, we were ready to test. The GT40P cylinder heads had a small combustion chamber ranging from 58-61cc while the GT40 heads had a 63-66cc combustion chamber. 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. The heads also required some machine work, including screw-in studs, guideplates, and widening the spring pockets for bigger valvesprings. Overview. 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. With the GT-40P heads you will need to back off the timing a couple degrees and bump up the fuel pressure. I'll prob take a trip up there this weekend after scavenging the junkyards, thanks a million. SBF FORD Aluminum Cylinder Heads 302 /351w 190cc 62cc 2.02 /1.60 For ROLLER CAM. .. i would not buy valves unless you need them amd would not switch to studs with these heads for your low hp . OR you could put your automotive journalistic skills in motion by reporting on the many new modern components available for the latest generation 351 Cleveland. Joined: Sun Mar 15, 2009 9:31 am. We are offering a pair of original Ford Cobra 5.0 GT40 cast iron cylinder heads. I got a GT40P off the assembly line years ago. 87-93-95 Ford Mustang GT40P Engine Cylinder Heads REBUILT 302 351 GT40 SBF OEM | eBay Motors, Parts & Accessories, Car & Truck Parts & Accessories | eBay! Free shipping. Nudge us with emails, and we'll make it happen. 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. 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. The reason for this is that we're actually replacing mildly worked E7TE heads. Pretty sure that was name, but I could be wrong. Calculating pushrod length Shop by category. Going from your heads to the GT40p heads will bump your compression by about a point.so hello bottom end torque. We were cruising the 'yard a while back and located a 2000 Ford Explorer with an EFI 5.0L V-8 engine. We've seen what happens from previous Ford experience when power levels above 500 hp tend to either pop head gaskets or saw blocks in half. We turned to Rare Auto Design in Orlando for dyno tests to find out how much horsepower we gained. 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. 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. #1:::Throw out all your Magazines that suggest what to do! 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. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. The later model distributors had a different diameter shaft than the earlier ones. Install a set of 1.7:1 roller-tipped rocker arms on the heads. Thank You. Torque on the other hand isnt something to write home about. I've not seen a set of longtubes that have an issue with GT40P's, either. REMANUFACTURED FORD 302 5.0 COBRA GT40 CYLINDER HEADS. The GT40P heads flow a lot better than stock 351 heads. Don't let the fact that the iron GT40 heads have a larger exhaust valve fool you. Some ideas never go out of style. Nice to see actual dyno results instead of "butt dyno" guesses. Ill do springs and a moderate cam and go for a good, dependable power plant. Weiand 7515 xcellerator intake. Also, you'll need to get a steel distributor gear to replace the iron gear that is currently on your distributor. The 2 heads are about the same when looking at the numbers with the GT40p heads having a slight edge. Scorpion 1.6 roller rockers. 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. '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 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. 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. This will keep you from dropping your overall static compression ratio and losing power. There are literally a dozen or so camshaft companies that offer a mild hydraulic roller cam for a 5.0L Ford. We heated the bottle to 950 psi and hit the button at 4,500 rpm. Yeah, except those. a) ain't early and b) aren't 289 heads. Test 2: Changed to the smaller of the two Lunati camshaftsno other changes. He'll have to get a gear for his distributor. Like I said lots of options. I plan on running a AFM b31 cam too which has relatively small duration for the intake valve. Check my post above. just curious. At the time, I was still running smog equipment in a 1994 Mustang GT, so I had them drill the back of the heads for the thermactor connection. Yea. On the power side, we selected 400 hp as an impressive but reasonable output for our small-block 5.0L Ford. 302 .030 over with; Scat Forged Steel Rods, SpeedPro pistons and rings . this is the price for one head. Not sure how they would mate up to your existing exhuast, but otherwise they should work. Works on all factory cast iron E7, GT40, and GT40P cylinder heads! Beyond the engine's amazingly good appearance, Moore had a couple of good reasons for choosing this engine. Limited header choice is certainly a challenge. JavaScript is disabled. You just want to keep it out of detonation. This time around, we chose a shining example of this junkyard art form. ***Most important is theStupid question is the one that was never asked!*** You can find them on later model Mercury Mountaineers and several other Ford SUV applications. I bought a crate 302 from Downs Ford a few years ago that was producing 320 hp. I have been working on Fords for 40 years and I have experimented with a few tricks of my own. The GTp heads are like GT 40's with smaller combustion chambers and the spark plugs are relocated for a more efficient burn. 1986 Short block with notched pistons. Required fields are marked *. i have a 302 engine from a 1977 granada and i am wondering if gt40p heads from an explorer will fit on this motor. GT40P heads, what kind of performance do they give? 69-70 302 heads (the ones with the heart-shaped combustion chamber) Any early 289 heads for the chamber size (but you'll have small ports & valves w/all that CR) Flat Ernie, Aug 27, 2011 SHARE POST #8 fordfan289 Member from indiana correct me if Im wrong but cant you use 351c heads and get the same thing as a 302 boss. There are caveats to this plan, however. 1.7 shaft rockers and beehives. 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. I was thinking the same but the enforcers are $647ea now so $1400 (inc tax) is the entry price for good set of heads. Features hardened 4140 Chromoly retainers, valve locks, spring shims, a spring height gauge, valve seals, and instructions. E303 Cam advanced 4 degrees. These cast piston short-blocks are not quite as good as the forged piston 5.0L that came in Fox-body Mustangs, but the GT40P heads flow much better than earlier 5.0L heads. The Fora platform includes forum software by XenForo. For the most part 302 heads and 351W heads are the same. 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. T5 with 3.73s. Over $2050 for the 165/185 renegades. A forum community dedicated to Ford Mustang owners and enthusiasts. At the dragstrip, we gained two-tenths and 2 mph. These timeslips are from 1280' above sea level. If I get different urges later, Ill pursue those then. Never not once have I ever seen a SBF rod bolt create a failure. Richard Holdener 240K subscribers Subscribe 63K views 1 year ago WESTECH PERFORMANCE GROUP LOW BUCK, GT40P 5.0L HEADS-CHEAP &. What you are trying to do is to increase the amount of airflow through the engine in order to make more power. Related Resources Mustang Generation Nicknames: What Do They Mean? You can have your current 28 oz rebalanced to 50. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. I've got gt40p heads for it I'll be running, and can't afford better . Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) - GT40P heads? I got lucky and found a complete Explorer GT40P engine online. Plus you will need to drill all the head bolt holes out as the 351W uses larger head bolts. Test 3: Installed the larger Lunati camagain, no other changes. That carbureted GT40P motor made 465 on th engine dyno with a .500" 239/244 camshaft, Holley 650 carb and Weiand Stealth intake. We need a build on a 400+ hp 302/6 build. 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. Very true about finding them at the local yards. I am very happy too. The Fora platform includes forum software by XenForo. check out the. Thanks for the help, I was planning on puttingin roller rockers or at least new springs, and that engine looks great, hoppfully mine will look at least similar to that one of these days. All Ford Mustangs | Model Specific Forums, GT-40P Heads - 5.0 Mustang & Super Fords Magazine. #3::: Do your homework,get quality parts,dont skimp. This is just a quick overview of the changes that need to be done. 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. This modification will help your late-model GT40P heads work better with the old-school carbureted intake setup. 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. Long tube headers are a terrific idea, but you need to open up the exhaust side. Rowe studied engineering, philosophy and American literature at Central Florida Community College. 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. Just got through porting one of my gt40p heads today. 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. You can have your current 28 oz rebalanced to 50. If you have a early 351W ie pre 76 it probably . Good on ya Jeff Smith. 1985 Mustang GT Mild 331 4bbl 5 spd, 1985 SEFI LTD LX AOD. This needs to be removed and different exhaust valves, retainers, and valve springs added to turn this into a decent street head. Boy, were we surprised with the results. Note the head bolt hole issue, some GT40 iron heads had 1/2 holes, if not they will need to be enlarged. 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. 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. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. hole size 302 is 7/16 and 351 is 1/2 The only way to really make more power is to go with a stroker kit, blower and/or heads. 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. Holten runs the factory fan, but he had removed it when he ran the 12.63. GT40p heads peak horsepower was [email protected] with 363ft/[email protected] The worked 351 heads showed peak . I recall having an absolute blast with my old K-code coupe back in the day. It turned out we were conservative on both counts. You keep stock drivability, and stock gas milage if you can stay out of boost. Save narve00 Someone does make the Tri-Y's headers for the early Mustangs using the "P" heads. AFR 165 Heads | Have options for pedestal mounted rocker arms or stud mounted rocker arms. Ive been building ENGINES for 40+ years. 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. 402 HP NA from a HI PO 289 isnt that mysterious of a feat to accomplish with todays SBF Aftermarket parts availability. Now he serves as a regular contributor to OnAllCylinders. 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. And have discovered something that I dont think anyone else knows. 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. fuel injection system . Yep my **** is coming apart again Isnt life great! A trip to Orlando Speed World provided us with updated quarter-mile times. You'll also have to use your 289 timing chain cover since it has a hole for the oil dip stick and fuel pump. thats after 3 hours of idling/midrange hits to tune the idle and part throttle . The asterisk HP differences are calculated using Test 1's 294-hp peak. Also, the spark plug angle makes it a pain. 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. For real performance, stock E7TE heads leave a lot to be desired. Their weak point is that the rotator used on the exhaust valve is very thick. Aside from the cost of the nitrous itself, this setup should cost you little more than a stock rebuild using all brand new parts.

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