I just acquired a 350 .030 over that 's very fresh on the build the pistons have hardly changed yet so the cross hatch is still in the cylinder walls I just tore it down to short block and was thinking of putting a 400 crank in it I need a new harmonic balancer anyway what do you guys think is it worth it . it has standard 350 rods speed pro hyper... pistons flat tops with 4 valve reliefs in it the heads are fresh vortec's with all the machine work done to accept the 515 lift cam in it what kind of compression ratio would I be running if I were ? couldnt I just ored a 400 crank kit with the bearings and put it in. and maybe in the future putting on a 100 0r 150 shot of juice just in case . Oh by the way it's going in a s10 shortbed 2wd. My bu is going to get a resto so I need a toy to play with