Not sure about that but got some pictures of the cast iron explorer manifolds on a 302. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. For the most part 302 heads and 351W heads are the same. So . Add a distributor designed for a carbureted 302 but make sure to install the correct distributor gear for your cam. Consider having the head's intake ports matched to the intake manifold gasket. I have a 302 Windsor V8 EFI engine that I converted to a 600 cfm carburetor with a Street Warrior intake manifold. 302 with GT40 heads | Ford Mustang Forums No-option stripper- I like strippers. 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. 87-93-95 Ford Mustang GT40P Engine Cylinder Heads REBUILT 302 351 GT40 SBF OEM | eBay Motors, Parts & Accessories, Car & Truck Parts & Accessories | eBay! 68 XR7 & 68 M-100. Really hurt too. Dennis Hilliard of Central Coast says we can expect to gain three-tenths in the quarter-mile. SBF FORD Aluminum Cylinder Heads 302 /351w 190cc 62cc 2.02 /1.60 For ROLLER CAM. Small Block Ford 289/302/5.0L/351w 180cc/60cc Aluminum Cylinder Head E42004. There are a couple of reasons for this suggestion. Then why did you port the heads and how do you know if you made an improvement. 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. i've got a short block started, and i recently came across a set of GT40P heads for FREE ( love family members). 289 or 351 heads on a 302 advantage? | The H.A.M.B. 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. These are some of the pictures I have showing the Explorer manifolds. The GT40 & GT40P heads had a few differences that are note-worthy, the most importantly being the bump in compression. Location: Re: Stock Ford 351W 4bbl dyno numbers. Calculated compression to 9.8:1. For a better experience, please enable JavaScript in your browser before proceeding. The only way to really make more power is to go with a stroker kit, blower and/or heads. Assuming the above configurationa pushrod 5.0L will potentially make between 250 and 260 hp. The tube headers showed a gain of almost 100 hp! this head is complete with new 1.837 int valves and 1.536 exhaust valves. Definitely going to use my P heads. 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. Tim's junkyard refugee survived the beating and we had a bitchin' story. These timeslips are from 1280' above sea level. We took the heads to Mike Slover of Slover's Porting Service in Sun Valley, California, to do this work, plus some basic pocket-porting to improve flowespecially on the exhaust side. Depending on the Headers you have you might be okay. 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. The valve seats have been cut on a . 302 GT40 Dyno Results - FourEyedPride.com 68 Mustang GT/CS Highland Green, PS, PB & Console, C Code w/C4 & 3.55 8 rear, If you aren't using the GT40P's stock, with maybe a spring upgrade and valve job, they aren't worth it anymore. You gave me the info I was looking for, and I really do appreciate it. I was thinking the same but the enforcers are $647ea now so $1400 (inc tax) is the entry price for good set of heads. Sponsored. Cloudflare Ray ID: 7a2e2d95dedea1e4 You keep stock drivability, and stock gas milage if you can stay out of boost. Hey all, I'm working on building a 302 with my gt40p heads. We did a quick search for hydraulic roller cams and landed on a COMP camshaft that looked promising. $930.00 + $55.00 shipping. GT40p heads peak horsepower was [email protected] with 363ft/[email protected] The worked 351 heads showed peak . at the crank. A trip to Orlando Speed World provided us with updated quarter-mile times. Install a "wet" nitrous plate system (which carries both nitrous and fuel) onto the intake manifold and jet it conservatively for a 100 horsepower shot. 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. For a better experience, please enable JavaScript in your browser before proceeding. (its not their engine) 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. GT40P Heads how much hp from them. - StangNet A forum community dedicated to Ford Mustang owners and enthusiasts. I am working on a set of iron GT40s hoping it goes faster. 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. Joined . 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. And remember ENGINES have been being built/rebuilt/modified for years. The newer camshaft is designed for use with a soft bronze distributor gear, not the hardened steel gear used for older camshafts. The SUV indicated barely 120,000 on the clock, and after yanking the valve covers to judge the engine's condition, Tim Moore instantly made the decision to do the boneyard version of a smash-and-grab. The rest went very smoothly, and we reused the stock lifters and suffered no ulcers worrying about breaking in the cam. But don't think that adding a bigger camshaft will make more power. Good on ya Jeff Smith. However there are plenty of factory heads that with the help of an experienced machine shop can be great. I got lucky and found a complete Explorer GT40P engine online. Step 1. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. As you might expect with more duration, the idle quality dropped significantly but was still able to make 11.5 inches of vacuum at 980 rpm. Shop by category. 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. Understanding Ford's Fox Body GT40 Cylinder Heads - CJ Pony Parts You need to check. I don't need tons of power to enjoy the car. With the P-heads requiring pedestal-mount rockers, we also called up Crane Cams for a set of 1.6 pedestal-mount roller rockers. Compare. We didn't increase the valve size, although we did have to add Manley valves to get the proper spring-installed height. I wouldnt recommend reusing lifters though. Install a used set of 5.0L Mustang "shorty" headers, generally available at auto swap meets for a reasonable price. I have been working on Fords for 40 years and I have experimented with a few tricks of my own. Just make sure it is a roller cam. Richard Rowe has been writing professionally since 2007, specializing in automotive topics. That's more than enough to feed a power-brake booster. These engines came with the GT40P head, which even with its small valves, offers really good performance. Early Windsors tend to have fairly restrictive exhaust manifolds, making the addition of a set of headers that much more efficient. #2::: Get advice from a reptile engine builder with experience(first flag for me is when somebody refers to an ENGINE as a MOTOR! Within a few hours of his discovery, the engine was sitting in the back of his truck on its way to a new home. If we subtract the 20 hp that the fan is worth, we end up with a gain of 25 hp. Not when you can buy a set of Promaxx or AFR Enforcer heads for $1000, that already have decent hardware included. It turned out we were conservative on both counts. Gt40/gt40p Heads On A 351w Questions - StangNet JEGS High Performance. We set the timing to 34 degrees and rejetted the carburetor to get our desired 12.5:1 air/fuel ratio. Here is the lowdown on exhaust manifolds and VALVE SPRINGS. Last Edit: January 18, 2015, 12:05:31 pm by businesstrader Logged shaunp. I recall having an absolute blast with my old K-code coupe back in the day. If you dont feel comfortable doing this higher a pro. That carbureted GT40P motor made 465 on th engine dyno with a .500" 239/244 camshaft, Holley 650 carb and Weiand Stealth intake. gt40p heads on a 289 in a 66 | Vintage Mustang Forums 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. 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. Using the manufacturer recommended springs for your camshaft are a safe bet. GT40s have 64cc chambers. Can anyone give me a little feedback about a '99 Explorer 5.0, and tell me if it's my answer. i have a question once i get the gt40p heads from the explorer truck can i also take the exhaust manifolds or headers and fit them in my 66 mustang:?:!?!?!? SB Ford GT40 Drop In Valve Springs Kit, Hyd Roller w/ Stock Cam, .450" lift and below. What Cam and Springs to Use for GT40 Heads Jeff Smith has had a passion for cars since he began working at his grandfather's gas station at the age 10. THANKS VERY MUCH! bmcdaniel, Feb 17, 2004 #7. v8maverick Member. Im now thinking of adding a cam to match the carb. 1983 Mustang G.T. 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. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. FORD GT40p 4 BAR HEADS IN GOOD CONDITION . 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. What you are trying to do is to increase the amount of airflow through the engine in order to make more power. Just put some 1.7 pedistal rocker arm on along with a mild camshaft (make sure to use the correct valve springs), you will make over 300 flywheel hp.