5.3 block boreXstroke question
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People typically take it out to the stock LS1 bore (3.900") or 5 thousandths over because there are more pistons available in that size. A 4" stroke will easily fit giving 383cid.
When you are starting out with 325cid, that is a very healthy increase in CID.
When you are starting out with 325cid, that is a very healthy increase in CID.