Yea maybe but would need the cast crank drilled for pilot bushing and have checked out ,, I know its a toss up on forged over cast between who you ask on which is better
I run a cast 340 crank, they are lighter than forged, shot peen hardened and are not the same as a 318 crank at all. I didn't use it for that reason, it came with my 72 340. Unless your boosting or using NO2 it will last as long as the block will. Just get it neutral balanced, it doesn't take much weight to get it there then you can use the 71-dwon dampers and flywheels and avoid the odd "cast crank only" balancer. Lots of 318 and 360 guys making good power on a cast crank. But its all in the intended use.
I'd be more concerned with the block and getting it sonic checked before I worried about a good cast crank. If your running a 4 speed you can use a Ram/Dakota pilot needle bearing that goes into the torque converter snout resister and shorten the trans input shaft with a zip wheel. Save the $350 and buy some Scat I beams.
