AS&M Headers
#11
Originally Posted by shandy294
I have a 2004 Sierra with a 4.8L,auto,extended cab,3.42 rear. I think the only thing mine has is O2 sensors on the pipes between the manifolds and the cats. What kind of gains could I expect(22hp for a 5.3)?
Are they talking rwhp? I might be able to buy them.
Dan Sheehy
Cibolo,Tx.
Are they talking rwhp? I might be able to buy them.
Dan Sheehy
Cibolo,Tx.
#12
Originally Posted by work in progress
Where in Cibolo are you, I am in Schertz. I will pm you about the headers.
Thread
Thread Starter
Forum
Replies
Last Post
Superman09
Sponsor's Announcements, Sales, and Specials
9
Sep 25, 2015 05:55 AM
dirt track racer 81
GM Engine & Exhaust Performance
5
Sep 21, 2015 06:44 PM
5.3lSilverado
GM Engine & Exhaust Performance
4
Sep 20, 2015 06:48 PM



