Thread: Chevy Truck World

So your saying I should go with a 2" exhaust if I use stock headers?

Are you talking stock exhaust manifolds or do you have headers. If you have a stock engine with just an aftermartet air intake you can't push enough air into the engine with those heads to need more than a dual 2" ehaust. Headers would be a nice mod but I wouldn't go with larger than 2" dual or 2.5" single. A cross section of the 2" pipe would give you 3.14 sq in and the 2.5 would give...

Wow, awesome answer Vortec-6000. Thanks for taking the time to explain. I don't have much money right now, so I'm probably going to go single for now and I have stock headers. Thanks for a great explination. Would it be okay to use the stock cat?

The stock cat would be ok but if you get a chance get an aftermarket high flow cat I think Magnaflow makes one. Cats are expensive. Your truck if I am not mistaken only has an O2 sensor before the cat and not after. If you really wanted to get a good rumble you could remove it. It is illegal to remove a cat and if you get pulled over and an officer takes a look you can be fined for it ...

Cool. I'm a cheap ass right now until I finish college so I'll just stick with a stock cat for now I guess. What muffler should I get that can give a loud sound but not sound UGLY? Also, now that I think about it I may have to get a new cat because isn't the stock exhaust piping only 2" and I want 2.5" with single??

Take a tape out and measure the circumference. 2" will be 6.28 inches and the 2.5" will be 7.85 inches. It could be larger and it may reduce it's size after the cat.