For the LS1 aluminum block, how much overbore is safe for a turbo? What is the largest bore for this block? I would have to go 0.020-inch over to clean up my cylinders; is this block still usable?

Unless you drive a rotary-powered Mazda, the characteristics of your gasoline or diesel engine are largely defined by its bore (the width or diameter of the cylinders) and stroke (the distance the ...