Duration - Valve Lift - Lobe Lift - LSA - Int./Exh. Werby: thanks to 5spd GT, I do believe you will find all you need here, and more! 050 was 210-204 duration, 115.5 LSA, and 2.5 degrees retard (118 intake CL and 113 exhaust CL).Īnybody know if this is right for the 1987-1994 5.0? 050" events of the stock 5.0 cam, does anyone know for sure? Hard to figure.īTW I am sort of guessing the. I'd blame the dyno but the first run with the iron heads is a pretty close match. There must have been some real magic in that parts combo. On rare occasions I've had the Gonk differ from the dyno by over 12% but not with this common a parts combo. Now the 165 AFR heads, TriY, Weiand, 625 Road Demon:ĭown 24hp from their dyno number in the mag.ĭown 20 ftlb and 41hp from the dyno number in the mag. Here is what I computed in the "G" without any fudging, just keying in the parts combos I already had:Į7TE heads, stock headers, Weiand, 600? Holley:įairly close so far vs. index.htmlI cannot get the Gonkulator to equal that 405hp either. Those rules really cripple the Fords with the poor choices in heads, compared to the vortecs and whatever they call those Dodge fuelie heads. Larger valves would flow less without the bowl hogged out. You would have to go with stock valve sizes, since you can't go more than 1/4' below the seat with porting. I know they run well in my boss's heavy van. I don't know how well they flow, but they already have 1.84/1.54 valves. The factory manifolds might not clear the -p heads either.Īnother option is the '85 5.8 HO heads. GT40-p heads flow better at lower lifts, but would require dish pistons to get 8.5-1 compression and drilling the boltholes to 1/2". Marine or Lightning heads already have 1/2" boltholes and wouldn't need drilling. GT40 heads are the best option with flat tops. No matter if you use roller or flat tappet a custom 'cheater' cam with faster ramps and altered duration would make tons more power than just a stock cam. No solid lifters or solid lifter cams." Now whether the roller falls under this category you should ask. I read the rules and they stated "Maximum lift 0.390 intake and 0.410 exhaust (at valve).
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