New LS1 Owners - Newbie Tech - exhaust ?
09-15-2010, 10:56 PM
have a ls1 ss
is the stock catback a 3" or less?
would i need a reducer to make it work with a 3"
Starz T/A 17
09-15-2010, 11:11 PM
What kind of exhaust are you putting on? Most aftermarket exhaust kits have a merger that allows it to fit over the factory y pipe. I believe stock size is 2.25 or 2.5
09-16-2010, 12:04 AM
yea i think stock is 2.5 inch.
09-16-2010, 07:23 AM
I had 2.5in welded on to the back of the stock shorty manifold and it looks a little bigger then the stock pipe. I would guess its 2.25in
...and the stock Y-Pipe has that disgusting flat slot on the driver side, get rid of that crap!
...and oh the joy once you put a new Y-Pipe on there and it starts beating the crap out of your under body. Then you'll know its time to do motor mounts, and have fun with that my friend.
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