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Conman · 08-29-2002, 09:48 AM

There is one length pushrods to use for each different combo
with everything else being equal, a set of longer pushrods will not allow the valves to close properly and may even open the valves up too much so they stike the pistons. As for it being a 317, pushrods have nothing to do with that
to increase cubes you either have to increase the bore or the stroke of the engine, when you bore a 302 by 0.030" it becomes a 306, and stoker kits like the 331 and 347 have a different crank, rods and pistons

08-29-2002, 09:48 AM	#3
Conman Registered Member Join Date: Apr 2002 Location: Kingston, Ontario Posts: 351	There is one length pushrods to use for each different combo with everything else being equal, a set of longer pushrods will not allow the valves to close properly and may even open the valves up too much so they stike the pistons. As for it being a 317, pushrods have nothing to do with that to increase cubes you either have to increase the bore or the stroke of the engine, when you bore a 302 by 0.030" it becomes a 306, and stoker kits like the 331 and 347 have a different crank, rods and pistons __________________ '88 lx, Black on Black, check it out here Spent all my money on school, what a dumb mistake I'm old enough to know better, but still too young to care.