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Can you bore a 400 block large enough to take a .030" over 440 piston?
That would only be .008 overbore. A .060 440 piston would be .038 over bored 400. 400 bore, 4.342. 440 bore, 4.320
a Motor home or low compression passenger car piston might work. Even if you find the right piston in the bone pile, it may be way off on balance specs. According to the weights listed for replacement pistons, the stock 440 pistons are possibly 75 grams heavy. That equals a cut of about .110. Too much. Best bet is a stock weight replacement piston, or run what you have.
Last edited by gregsdart; 03/31/13 10:20 PM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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