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- 1987 - 1996 F150 & Larger F-Series Trucks (https://www.ford-trucks.com/forums/forum28/)

- - GT40P Heads (https://www.ford-trucks.com/forums/1274272-gt40p-heads.html)

broketruckjohn

10-19-2013 09:45 PM

GT40P Heads

what gains should i expect from replacing stock heads with GT40P heads? will there be any machine work that will have to be done?302 with street strip cam,headders,dual plane edelbrock high rise intake,650 edelbrock carb,accel high voltage coil 0.40 over pistions.the heads are F77E

Conanski

10-20-2013 08:53 AM

Roughly 30% gains across the board.

broketruckjohn

10-20-2013 07:22 PM

Horsepower

does anyone know a Simple formula for figureing out approxmate horsepower.i would like to figure all aspects into equasion.

nflfreak43

10-20-2013 08:16 PM

No.. You can do desktop dyno and approximate it at the crank..

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