LS7 Exhaust question
Thread Starter
Pro
Joined: Apr 2011
Posts: 689
Likes: 47
LS7 Exhaust question
I received LS7 Manifolds/cats/h-pipe from another forum member. There are a total of 5 studs missing from the manifolds, and 2 from where the cats connect to the h-pipe. Can the LS3 studs be used in replacement or will I need to get new parts at the dealer?
Melting Slicks
Joined: Nov 2003
Posts: 2,155
Likes: 56
From: Escondido CA
i just did this last week to my 09 csc c6coupe, here is the post with pic's may help you..
http://forums.corvetteforum.com/c6-c...-09-coupe.html
bud
http://forums.corvetteforum.com/c6-c...-09-coupe.html
bud
Thread Starter
Pro
Joined: Apr 2011
Posts: 689
Likes: 47
i just did this last week to my 09 csc c6coupe, here is the post with pic's may help you..
http://forums.corvetteforum.com/c6-c...-09-coupe.html
bud
http://forums.corvetteforum.com/c6-c...-09-coupe.html
bud
Racer
Joined: Jul 2009
Posts: 384
Likes: 2
From: Warrenville IL
I bought all new studs, bolts, nuts and gaskets when I installed my LS7/9 manifolds and cats last year. It was quite a chore to track down those part numbers. I ordered everything from PartsTaxi.
The manifolds have 4 studs per side (8 total):
item 24 - part# 11518424
The cat to h/x pipe requires 1 stud and 1 bolt per side:
Studs (2 total) - item 19 and 27 - part# 11588356
Bolts (2 total) - item 13 - part# 11515768
The nuts for the studs (10 total):
item 12 and 20 - part# 11517996
The manifolds have 4 studs per side (8 total):
item 24 - part# 11518424
The cat to h/x pipe requires 1 stud and 1 bolt per side:
Studs (2 total) - item 19 and 27 - part# 11588356
Bolts (2 total) - item 13 - part# 11515768
The nuts for the studs (10 total):
item 12 and 20 - part# 11517996
Thread Starter
Pro
Joined: Apr 2011
Posts: 689
Likes: 47
I bought all new studs, bolts, nuts and gaskets when I installed my LS7/9 manifolds and cats last year. It was quite a chore to track down those part numbers. I ordered everything from PartsTaxi.
The manifolds have 4 studs per side (8 total):
item 24 - part# 11518424
The cat to h/x pipe requires 1 stud and 1 bolt per side:
Studs (2 total) - item 19 and 27 - part# 11588356
Bolts (2 total) - item 13 - part# 11515768
The nuts for the studs (10 total):
item 12 and 20 - part# 11517996
The manifolds have 4 studs per side (8 total):
item 24 - part# 11518424
The cat to h/x pipe requires 1 stud and 1 bolt per side:
Studs (2 total) - item 19 and 27 - part# 11588356
Bolts (2 total) - item 13 - part# 11515768
The nuts for the studs (10 total):
item 12 and 20 - part# 11517996
Thank you very much, the exact info I needed. Is there a gasket that goes between the cat/h-pipe connection?
Melting Slicks
Joined: Nov 2003
Posts: 2,155
Likes: 56
From: Escondido CA
yes a circular exhaust ring...............should be with the cat pipe..#17 in illustration above...fits like a ring on the end where it mates to the midpipe..
i used all used bolts and nuts, but all new gaskets except the exhaust rings,they were also used..good luck
i used all used bolts and nuts, but all new gaskets except the exhaust rings,they were also used..good luck
Last edited by bud miller; Sep 21, 2012 at 11:05 AM.
Thread Starter
Pro
Joined: Apr 2011
Posts: 689
Likes: 47
ok thank you
