I think you need to look around. I think you can get a Cloyes DBL roller CHain from Powerhouse, PAW etc for twenty something bucks. If your not gonna build this motor again any time soon, and your gonna beat on it...Id say the extra few bucks for a DBL roller CHain is worth it. From my expereince which is limited compared to tohers on here like Pat, Erik etc...the first thing that goes on a Small of big block chevrolet in the cam, lifters and timing chain...for the extra 10 -15 over stock Id get the dbl roller.