Factory Camshafts ~ 1968 340 '4-Speed' vs. Chevy '151'

You Guys Got it ...."We" old timers called the solid lift cam the "30-30" which in fact (as far as I know it, I had one) was the Valve lash setting and real Gear Heads would understand (at least the chevy guys). :thumleft:

I think the 30-30 cam was also known as the Duntov cam. Back in the early 90's I restored a 65 Corvette with factory fuel injection. We used a TRW cam with similar specs, although I can't remember what that cam was called.

This was pre-internet and I didn't know anything about dynamic compression ratio. We used flat top pistons in that motor and I have no idea what my static CR was. Quite possibly, I did not have enough compression for that cam, but it was still fun to drive. It was really obnoxious, especially with the factory side exhaust, basically 2.5" pipes with no mufflers. I could cruise down my street and set off every car alarm.