349 CI on the cheap

Do you have enough clearance between the bottom of the piston and the crank throws at bottom of the stroke. I rember this done on a 360 using low compression 340 pistons, (371CI) they had to machine some material from the piston bottom below the pin boss for crank clearance. Than there is getting it all to ballance.
I've had good luck with .030 over 360 and price is low.

What I did and maybe should have done it differently but, I cut the counter weights on the crank .150 to lighten the crank and this also made the pistons clear. I had to add 7 pieces of mallory metal but I also internally balanced the crank. Now on a buddy of mines we cut the crank on the counterweights the same way, but externally balanced his. His took 3 or 4 pieces of mallory, but it sure spins up quick.