[Greg Reimer 7376]

Several years ago, we built a 350 out of a 305 by buying new 350 pistons and a 350 block. We used a 350 piston on 305 rods and used the 305 crank.Since 305 pistons are lighter than 350 pistons, the assembly had to be re-balanced.Most of the weight came off the pistons, and some was added to the crank. If you use a steel 350 crank with Manley or even OEM rods and good 305 pistons, it should balance pretty easily,as the weight will come off the crank only, it's got plenty of weight anyway.It is dimensionally the same as the 305 crank, just heavier, but the balance job will cover that. Sounds like a good way to go!