Exhaustsystem question
Thread Starter
Intermediate
Joined: Aug 2005
Posts: 28
Likes: 0
Exhaustsystem question
I've decided to make my own exhaustsystem from the headers back to the silencers.
Should a go with 2.5" the whole way or maybe even 3"?
Which size would be best for my car that's the question i'd like to have an answer on
I'm planning on land at around 350hp
Appreciating answers
Should a go with 2.5" the whole way or maybe even 3"?
Which size would be best for my car that's the question i'd like to have an answer on
I'm planning on land at around 350hp
Appreciating answers
Team Owner
Joined: Sep 2001
Posts: 62,127
Likes: 1,727
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
What you want is to gradually lower the diameter as the exhaust goes backwards. If its 3" at the collectors then get it down to 2.5" at the back.
Pro
Joined: Mar 2001
Posts: 602
Likes: 1
From: Hacienda Heights, Ca. USA
I've done this on 4 different cars. Find yourself an LT1 or ZR1 cat back exhaust. You'll need to get the exhaust hangers and the bolts that hang them first, especially the rear hangers as they take special bolts and nuts. The exhaust bolts on, you just need to adapt the front connection. You'll lost the front cats, I welded in two bullet cats in place of the LT1 resonator. I used two CATCO bullet cats, Part #6906R, which will fit. OK, enough of what I've done. All I can say is, it works.
