just had a factory roller cam from a early 90's 360 offered to me for $50. I'm in the middle of a 318 rebuild (on the cheap) for my Duster. Being my 318 is a pre-Magnum roller and I don't run a mechanical fuel pump anyway can I use this cam?
It is possible. What year block are you rebuilding?
The roller lifters are the key to it all/ If it is a roller block, then it is easy.
If it is not a roller block, then the lifters must be aftermarket units which are pricey making the cam not really worth jack.