How much more horsepower than the edelbrock will an 068 pump out in a 400+.060, with 670 heads, Carter 625AFB, stock log manifolds, 3.42 gear, TH350? Maybe 10 or 15hp? Or is it more like 50hp. i.e. is it worth the change? Engine runs pretty good with the edelbrock. No pinging, good idle, good low end torque.
