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. hole size 302 is 7/16 and 351 is 1/2 If I get different urges later, Ill pursue those then. E303 Cam advanced 4 degrees. Some ideas never go out of style. I was thinking the same but the enforcers are $647ea now so $1400 (inc tax) is the entry price for good set of heads. Because its all been done time after time after. A forum community dedicated to Ford Mustang owners and enthusiasts. They fill that spot between power and budget. Those are really good numbers. These are among the best of the iron Ford Windsor heads as they tend to flow much better than earlier castings. Install a used set of 5.0L Mustang "shorty" headers, generally available at auto swap meets for a reasonable price. any input is apprecciated:smartass: Thank you for the info, if all I have to worry about is the plugs then I'm in good shape hahaha. 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 car weighs #2835 with driver. 1979 Indy 500 Pace Car. I guess someone could just do a basic valve job and throw on the GT40 upper/lower intake for a cheap HP boost. The GT40 & GT40P heads had a few differences that are note-worthy, the most importantly being the bump in compression. Despite adding 30 degrees of intake duration, this cam improved torque throughout the entire test from 3,000 rpm on up. However I think the opportunity window is slowly closing. I recall having an absolute blast with my old K-code coupe back in the day. 1986 Short block with notched pistons. The action you just performed triggered the security solution. 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. This is what I recommend to everyone who is doing a budget 5.0 build. The multiple-layer steel construction allows the gasket to conform to movement between the cylinder head and block while maintaining a good seal. SBF engines are modified constantly. *** 65 Mustang 351C 4v, AOD, 4.11 gears *** 66 Galaxie convert big block. thats after 3 hours of idling/midrange hits to tune the idle and part throttle . fordfan289, Aug 27, 2011 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. Is asking advice for a fairly common situation involving parts with mandatory compatibility between the two for performance and longevity. Dennis Hilliard of Central Coast says we can expect to gain three-tenths in the quarter-mile. PTP Engineering front suspension and 25540R17s all around. As with all head installations, check piston-to-valve clearance before final startup. Within a few hours of his discovery, the engine was sitting in the back of his truck on its way to a new home. #1:::Throw out all your Magazines that suggest what to do! Car Craft mag. And agree the cams do help and a few tricks with the heads that I have discovered really make a difference. 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. 87-93-95 Ford Mustang GT40P Engine Cylinder Heads REBUILT 302 351 GT40 SBF OEM | eBay Motors, Parts & Accessories, Car & Truck Parts & Accessories | eBay! REMANUFACTURED FORD 302 5.0 COBRA GT40 CYLINDER HEADS. In addition, the cam timing was designed for torque, with duration somewhere around 190 degrees at 0.050 with roughly 0.450-inch lift. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. 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. Your email address will not be published. Shop by category. I added a link to it. 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. Hey all, I'm working on building a 302 with my gt40p heads. When building an engine there is a lot to take into consideration. 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. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Aside from the cost of the nitrous itself, this setup should cost you little more than a stock rebuild using all brand new parts. The GT40P heads flow a lot better than stock 351 heads. T5z and 3.89 9" TL rear. A mild porting with gasket matching will be very good. If you wanted to make your engine feel strong, these would be a decent investment, but they will require some modifications. Once the headers are in place, then you can consider if you still want more power. Now he serves as a regular contributor to OnAllCylinders. Per a UEM tech support email I have the Icon IC736 is supposed to be good for GT40 heads when I asked about it. Holten tells us removing the fan is worth two-tenths in itself, which tells us the fan soaks up roughly 20 hp. The Fora platform includes forum software by XenForo. That's a 40 per cent increase in power from a simple head and cam swap, and one seriously happy Mustang owner! There is a better way. 97% Positive Feedback . people can stop saying that adding aftermarket cam with stock heads is a waste of time. 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. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. You didnt provide a lot of information about the engine itself, Im assuming its 85 or newer ( roller cam) May need a freshen up of the bottom end if compression is the issue. how hard to put on? I can tell you that with my 9.503 block, 22cc dished pistons and 64cc heads, I'm at 9.5:1 compression. 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. 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. 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. Ford's seminal 302 engine (later re-dubbed the 5.0) has been popular with budget-minded hot rodders for decades. Purchase any used aftermarket manifold for the 302 that is designed to function in the 3,500 to 6,500 power band. But dont think that adding a bigger camshaft will make more power. check out the. 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. 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. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. I have a 5.0 from a 1992 Mustang in my 65. 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. Best of all, no machining is required to install these on your stock cast iron heads! Runs well. Here a comparison of different heads on a 302: I'm very happy with my GT40P. Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. 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. Come join the discussion about performance, production numbers, VIN decoders, modifications, troubleshooting, power adders, DIY tutorials, and more! Well also assume that this engine is running stock exhaust manifolds. This is needed for the steel roller cam. I turned it because it was tired when I got it. Ported Hurricane Single Plane and custom 750 HP. The tube headers showed a gain of almost 100 hp! But the part about a cam replacement possibly being a labor intensive undertaking is correct. 1985 Mustang GT Mild 331 4bbl 5 spd, 1985 SEFI LTD LX AOD. Compare. I was thinking the same but the enforcers are $647ea now so $1400 (inc tax) is the entry price for good set of heads. A LOT of them do it these days. If you can get the mentioned GT-40 heads with studs for a good price, that would be good for you. Last Edit: January 18, 2015, 12:05:31 pm by businesstrader Logged shaunp. With nitrous, this is easily a mid-11-second ride. I'm sure the dyno operator used some goofball correction factor to make the numbers look higher. 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. 02-11-2012, 07:16 PM #6 fiveoh 86lx Stock valve sizes? I had those on my car before I upgraded and they were nice heads. .. i would not buy valves unless you need them amd would not switch to studs with these heads for your low hp . $700.98. could the gear of off the oil pump drive(i know they're DIS), for the explorer motor be used on his dizzy? Joined . I'm using the Trick Flow stage 1 cam with 1.7 roller rockers. They were located in Tahachapi CA, and were sold with upgraded springs for $650.00, back in 2002-2003 ish. 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. That carbureted GT40P motor made 465 on th engine dyno with a .500" 239/244 camshaft, Holley 650 carb and Weiand Stealth intake. K.S. I have a 302 Windsor V8 EFI engine that I converted to a 600 cfm carburetor with a Street Warrior intake manifold. I've not seen a set of longtubes that have an issue with GT40P's, either. If you can find individual flanged headers like the obsolete MAC headers had, those worked really well with GT40P's. The reply has so many assumptions that I cant even assume to know the answer. 1 - 7 of 7 Posts. Performance & security by Cloudflare. We also added an Edelbrock Performer RPM dual-plane intake and a set of 158-inch headers with no mufflers. This engine will be good for your 65 Mustang. Using the manufacturer recommended springs for your camshaft are a safe bet. Depending on the Headers you have you might be okay. Assorted screwdrivers, pliers and vise-grips. 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. Click to reveal Overview. With the GT-40P heads you will need to back off the timing a couple degrees and bump up the fuel pressure. Required fields are marked *. Ford Factory 5.0 Performance Cylinder Heads. For 2018, the Coyote makes 460 hp. Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) - anyone have experience with GT40P heads on a 92 351W - ive got a 92 F250 with a 351W that needs a pretty serious rebuild. Free shipping for many products! 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. 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. 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. built one using a 91' HO short block with a set of AFR 165 heads, Weiand . Test 1: 750-cfm carburetor, dual-plane intake manifold, and stock camshaft. Start with any 302 block, but try to find one from 1985 and up since it will already have provisions for a roller camshaft. JEGS High Performance. Gasoline/Diesel all makes on earth & still doing it today with great pride.Feel free to contact me anytime. 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. This modification will help your late-model GT40P heads work better with the old-school carbureted intake setup. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. We set the timing to 34 degrees and rejetted the carburetor to get our desired 12.5:1 air/fuel ratio. 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. Not looking for crazy HP. This test went so well that we were eager to see what the slightly bigger cam would do. I was looking at putting on the GT40P heads on. The cost of a new set of standard replacement roller lifters is very affordable at major retailers like Summit. never messed with the timing, its at 35* total . 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. Holley 670 street avenger carb. Advanced: Daily Deals; Help & Contact; Sell; My eBay Expand My . 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. The gt40p head is considered the best OEM 302 head made. The kit offers adjustable power from 50 to 250 hp with a simple jet change. We were cruising the 'yard a while back and located a 2000 Ford Explorer with an EFI 5.0L V-8 engine. . Ill do springs and a moderate cam and go for a good, dependable power plant. 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. 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. 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 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. 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. Early Windsors tend to have fairly restrictive exhaust manifolds, making the addition of a set of headers that much more efficient. Perhaps even more surprising was how well this engine idled, calmly purring with 16 inches of manifold vacuum at 980 rpm. 402 HP NA from a HI PO 289 isnt that mysterious of a feat to accomplish with todays SBF Aftermarket parts availability. #2::: Get advice from a reptile engine builder with experience(first flag for me is when somebody refers to an ENGINE as a MOTOR! If there isnt room without disassembling half the front clip on the car, then it might be easier to remove the engine and do the conversion that way. Also, you'll need to get a steel distributor gear to replace the iron gear that is currently on your distributor. There are too many variables to add to this regarding aftermarket stroker kits or components. Central Coast Mustang sells GT-40P heads at a great price, making them a viable alternative in a market flooded with performance head choices. 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. Someone does make the Tri-Y's headers for the early Mustangs using the "P" heads. You'll have to plug the oil hole that is in the engine from the old oil dipstick. Im a different animal. I got a GT40P off the assembly line years ago. An aggressive cam will wake it up a bit. 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. Take the assembly to a machine shop to have it balanced and install it in the block. Anythoughts? Once you get into the FoMoCo aftermarket aluminum GT40s though, all bets are off. Here is my setup. These timeslips are from 1280' above sea level. These are some of the best castings Ford ever produced for this engine, and are still fairly cheap and available used. After graduating from Iowa State University with a journalism degree in 1978, he combined his two passions: cars and writing. While the heads were off getting a massage, we turned our attention to the cam timing. HiPo manifolds and Ill be good. $139.99. Yeah, out of a bolt on upgrade, you'd probably be looking at 260-280rwhp ish with supporting mods. Thank You. 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. First, adding headers will improve power on the existing combination. I got a set of AFR heads , night and day. 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.
Dellwood Country Club Menu,
Marimekko Bottna Fabric,
Articles OTHER
