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I purchased a set of roller rockers (Dove manufacturing) and a new set of pushrods for my 340. It is a hydraulic lifter with adjustable rocker and the pushrods are Comp Cam 7821-16 measuring 7.389" (recomended length) The problem I measured the pushrod length on TDC #1 using the exhaust valve...

Hello all. What do you think a port match is worth in HP. (340, Aluminum heads, M1 intake) I am thinking of port matching my intake to heads, and my heads to exhaust. Is it worth the time and effort of taking if apart to gain perhaps 5 hp, or is it more than just HP gains? What do you all think?