2 340 questions

What's the big deal about a roller 340. My 340 has a solid roller cam (Crower). People have told me it is not easy to make a 340 roller. Mine was installed by the previous owner. Question 2 is about my heads. I know my car has the original engine and was told my heads were the stock heads ported and flowed. My heads do not have an X next to the plug holes like I have seen on some X heads. My heads have nothing (may be a faint X on one head.

I am good friends with the old owner and have known the car for over 20 years. He got it in 83. 68 340, 4 speed Formula S with 58,000 miles. 11.78 in the 1/4.


I'm a converted Chevy guy and don't know a thing about a small block Mopar.