[GUMP]

Originally Posted by Rob Wright

Maybe it was all just luck, but a few years ago I dyno'ed a 427/425 that a friend built for a Yenko clone.

He bought 100% original parts, including cam, carb, heads, etc. because for some reason it mattered to him that it was all original.....even though the pistons were knurled, the valves were sunk to China, the block was ridge-reamed, and on and on.

It made 570 HP on a DTS dyno with a set of Hooker street car headers.

It was rated 425 for the insurance companies. You know that. Heck back in 1969 the factories had no interest in stock eliminator. The COPO 427/425 was actually a towing package........