360 Core Questions

The 84 and newer engine could have a roller cam and if so the heads are different as the pushrods are shorter due to the included angle of the pushrods and larger holes in the heads where the pushrods come through are larger for clearence. The blocks are a thin wall casting so .030 is max. so be careful when you look as these engines as the ring ridge is a tell tale, if you can catch a fingernail on the ridge I would say that it's going to be on it's last rebuild if it isn't too severe. The eariler blocks (76 and older)are thicker and should be able to go .060 with ease. 77 and newer tend to crack easier as I have one here that the cylinder split 3 to 3 1/2" and was standard bore, so just a word of caution.