Exhaust rusted out changed to dual two questions.

[cleszkie]

I also run 2.5" tubing all the way with a cross-over, and dumps behind the rear wheels. However, I now run Walker stainless steel "Quietflow" mufflers with a set of exhaust tip resonators that I got from Summit racing. The Quietflow mufflers have a very nice tone, and are pretty quiet too on my 450hp 400 SBC. However, I take a lot of trips with my wife and son with the Blazer, and there was still a tad of resonance. So I added the set of exhaust tip resonators, and the resonance went away. Yes, I have probably lost some power with the Quietflows and resonators, but it is now totally enjoyable inside the Blazer on those long road trips.

BTW, I also totally lined my tub with Fat Mat under my carpet, which also helps reduce interior noise.