Quote Originally Posted by Roadknee View Post
I don't think you'll find anyone who will disagree with that. I've personally been very impressed with your results for about a decade now. I simply don't agree with your opinion that 1-1/2" headers are holding back my stock LO5. FWIW, I don't think it would gain or lose anything measurable with a decent set of 1-5/8" headers either.
Its possible your stock cam has a choke hold on the engine and it just can't move any more air through the valves but honestly I have never not seen gains with headers.