340 Engine Shake

plumkrazee70 said
This is what ai am leaning towards, mainly because the machinist has a 360 and crank ready to be prepped for $250.

Can of worms
Dude unless you are going to have a QUALIFIED engine builder assemble this engine dont go there. Not saying it cant be done.
Plus the balancing issue
Man I would bite the bullet and sleeve the block or find another block.