Someone please help me out. What exactly are the torque boxes?
Thanks.
Caymon
One more thing. Will I still see gains if I port the intake and exhaust side of the heads but do not enlarge the valves? How hard is it to port the lower intake and the upper intake?
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'90 GT Under construction
Best E.T. = Fast @ High Speeds - OK So I Lie. So What!!!
04 F-150 STX 4.2L 5 spd
Rice Haters Club Member #128
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