385 cubic inches basically. Avery Re: STROKER Engines Date: Thursday, January 27, 2005 11:32 AM From: What is the final CI size of a 343 with a 401 crank assuming it is a standard bore? What is the largest (safe) overbore that can be done on a 343 block? With the largest overbore plus the 401 crank.....what would that CI be? Rocky ----- Original Message ----- Sent: Thursday, January 27, 2005 6:03 AM Subject: Re: STROKER Engines