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Author Topic:   289 rods
dirtpoor racing
posted November 12, 2003 09:49 AM
have a 89 302 ho motor with a stock roller cam.Wanting to run 289 rods with a 302 crank any tips on how much i'll have to mill my pistons down,and will stock forged pistons hold out.

posted November 12, 2003 05:05 PM
you're going to like that combination. i've ran it several times. mock up the assembly with a stock type piston, measure how far it sticks out of the deck and have that much clipped off the top of the piston. usually about .047"-.050" needs to be removed. i've taken as much as .055" off a speedpro hypereutectic. zero deck it. you may have to re-notch the pistons for valve relief. don't know about the stock forged depends on where the top ring is located.

wizzard, boss pistons won't work with a windsor head. i believe they have a dome for a cleveland head.

posted November 12, 2003 08:32 PM
you can get them with the dome or flat top i bought some flats about7 years ago cant remember what brand tho mabe steve would know where to get'em

[This message has been edited by wizzard (edited November 12, 2003).]

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