273 crank in a 340

pishta said
Even a poly crank would work. But as said, it would need a serious balance job for heavy 340 slugs. Now if your going SCAT rods and light pistons, you may be closer than you think. The 273 ran a huge wrist pin, the larger bore LA 318 didnt to be roughly the same reciprocating weight. 340 rods and pistons were heavier so they took weight out of their bearing journals instead of adding weight to the counterweights.

Depends on which one. The early Polys won't work. The later ones into the 60s will. There's a year split on them somewhere where a difference is but I cannot remember where it is. The Poly guys use the 4" 360 cranks in the later Polys for buildin Poly monsters. I always kinda wanted to do one, but I'll never get around to it now.