2 1/4" or 2 1/2" Dual Exhaust? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

03-26-2009, 12:50 PM

americanmusc1e

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Join Date: Jan 2009

Location: Austin, TX

Posts: 1,079

Re: 2 1/4" or 2 1/2" Dual Exhaust?

Quote:

Originally Posted by cwilkie

My truck is actually a 396 bored .060 so I think that makes it a 408. So I think I am going to go with 2.5" dual exhaust with glass packs. What do you think?

if you have a modified engine that revves to a higher rpm than stock, use the 2.5 pipes
If you have a stock or near stock engine, use the 2.25 pipes

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