Do you have any non balance shaft 4.3L blocks and 4.3L crankshafts?
I'm doing something really stupid with my 19'.5" ski boat. taking a set of Vortec heads with back cut valves a bowl blend, a bigger cam, 4 barrel carb and this edelbrock intake. I have everything but the intake.... Then onto getting the proper prop to get the most out of the package.
I planned on building a new short block and bumping the valve size in those vortec heads to 2.02/1.60's for phase 2 that why I was inquiring about the block.