340 Build

69Valiant4spd said
What I'd like to do is take a 69 date coded 340 block and build either 367 or 410 stroker w/6 Pak. Will 2 bolt mains be ok or can block be machined for 4 bolt? Will the block need to be clearanced for the longer stroke? Doable or not?

With a 4 inch stroke crank, some rods will need to be clearanced. I forget which ones will not clear.

On the 3.58 crank, everything will drop in without issue. (.030 over gives you 372 cubes)

2 bolt mains will hold 600+ HP. Skip the 4 bolt.