the 221/221 .566/.566 on 112, what size pushrods are needed? anyone know?

 

7.4" or at best a 7.43 to make up for the smaller base circle. Thunders rods are ideal.

 

Im running 7.4's and I have my heads milled .050 honestly I think they could longer with unmilled heads I would get a checker while your in there
I need to buy a pushrod length checker and get off my ***.

Lazyness....setting in....must get off couch