LS7 Head bolt torque pattern
Thread Starter
Drifting
Joined: Dec 2008
Posts: 1,767
Likes: 2
From: Melbourne, Arkansas
Cruise-In X Veteran
LS7 Head bolt torque pattern
Does anyone have the torque pattern for the LS7 head bolts? The ARP head stud kit came with the torque specs for the nuts but not the sequence.
Thanks
Mark
Thanks
Mark
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,951
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
http://www.ls2.com/boggs/torques/headpnt.jpg
Ignore the torque numbers, I believe that is for the LS1 but the LS7 torque pattern is the same as the LS1.
The LS7 M11 (1-10) 22 lb ft first pass
M11 (1-10) 90 degrees second pass
M11 (1-10) 70 degrees final pass
M8 (11-15) 22 lb ft.
Elmer
Ignore the torque numbers, I believe that is for the LS1 but the LS7 torque pattern is the same as the LS1.
The LS7 M11 (1-10) 22 lb ft first pass
M11 (1-10) 90 degrees second pass
M11 (1-10) 70 degrees final pass
M8 (11-15) 22 lb ft.
Elmer
Last edited by eboggs_jkvl; Apr 2, 2012 at 04:22 PM.
Race Director
Joined: Jan 2005
Posts: 10,924
Likes: 853
From: Daytona Beach FL
I pretty much agree with Elmer.
Below is a picture from the 2010 Service Manual and is from the LS7 section about installing the heads (all the C6 engines use the same pattern):
In Elmer's link the 3rd pass is different from my 2010 SM.
In my manual all bolts are tightened 70 degrees in the 3rd pass, as Elmer mentions in his info.
Bob
Below is a picture from the 2010 Service Manual and is from the LS7 section about installing the heads (all the C6 engines use the same pattern):
In Elmer's link the 3rd pass is different from my 2010 SM.
In my manual all bolts are tightened 70 degrees in the 3rd pass, as Elmer mentions in his info.
Bob
Last edited by BEZ06; Apr 2, 2012 at 04:44 PM.
Thread Starter
Drifting
Joined: Dec 2008
Posts: 1,767
Likes: 2
From: Melbourne, Arkansas
Cruise-In X Veteran
I pretty much agree with Elmer.
Below is a picture from the 2010 Service Manual and is from the LS7 section about installing the heads (all the C6 engines use the same pattern):
In Elmer's link the 3rd pass is different from my 2010 SM.
In my manual all bolts are tightened 70 degrees in the 3rd pass, as Elmer mentions in his info.
Bob
Below is a picture from the 2010 Service Manual and is from the LS7 section about installing the heads (all the C6 engines use the same pattern):
In Elmer's link the 3rd pass is different from my 2010 SM.
In my manual all bolts are tightened 70 degrees in the 3rd pass, as Elmer mentions in his info.
Bob
Mark
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,951
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
Elmer
