H pipe length
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
All the H pipes are the same,, Its the angle of the header pipe (Midpipe Exhaust Flange) to where it connects to the manifold that is different. Plus, you have to figure out if your car had PUP CATS or not. What year C5 do you have? That makes a BIG difference in which pipes you need.
Thread Starter
Intermediate
Joined: Aug 2020
Posts: 41
Likes: 5
From: Bradenton, Florida
I have a '99 base automatic. First, I don't know if the manifold is stock. Another problem is the cats have been shortened to fit 2 hi-flo glass packs. Now one cat is bad and I'm trying to get back to stock. It's a mess and may just leave it to the muffler man who happens to have a C5...but his is probably a different year. I'm between a rock and a hard place.
Last edited by The Zoob; Nov 1, 2020 at 03:47 PM.
