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Can i bore 305 Chevy engine to fit a 350 cylinders?

It is not possible to bore a 305 Chevy engine to fit 350 cylinders. The cylinder bores of a 305 engine are smaller in diameter than those of a 350 engine, and there is not enough material in the block to allow the larger bores. Additionally, the stroke of a 350 engine is longer than that of a 305 engine, so the piston rods and crankshaft would also need to be changed. It would be more cost-effective to simply purchase a 350 engine rather than trying to modify a 305 engine to fit 350 cylinders.