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it's .005 i just say zero because thats easier. i used the kbs with 452 heads. later changed to eddy performer closed chamber, cut the heads to get my cr up. thats why i want to use the same block, heads and intake. 440 source list it at .025 in the hole, i guess thats on a stock/uncut block. thinking i will end up about the same as now so maybe my cr and piston to valve will not change.



Unless you go with a dished piston with the stroker kit, the extra stroke will cause your compression ratio to go up.



that depends on the stroke , to get the compression I needed with a 4.280 bore and a 3.9 stroke crank I had to put a 12 cc DOME on the piston . A flat top is only good for about 10.7 .