Thanks techinspector1. I figured those would work but what I don't know is if I use another year 350 block other than those years,are the block heights the same? Other words,are all 350 blocks the same measurement from crank centerline to the top of the cylinder? Was worried that I might wind up with a block cylinder that would be either shorter or taller than my 3" stroke with 5.7" rod and 302 piston???