Generation IV Internal Engine - Torque sequence
ThunderZ28
10-23-2009, 08:53 AM
Is the torque sequence for a LS1 head the same for a LS3 head???
starting from the center and working out???
http://www.ls1howto.com/howto/c5/heads.cam.pulley/pics/torquebolts.jpg
ThunderZ28
10-23-2009, 11:52 AM
Anyone?
Texhotrod593
10-23-2009, 12:09 PM
yes. should be the exact same. these ls heads are all the same basically... they should be torqued the same way. that way there is no way the head will have any chance of "high" spots during the torque sequence
ThunderZ28
10-23-2009, 12:20 PM
OK..So I torque bolts 1-9 to 22ftlbs..
then mark them, turn an addition 90*
then 1-8 an additional 90*
and then 9 and 10 50*
ending with the 5 top bolts.. 11-15 @ 22 ftlbs..
Sounds about right??
Thanks again for the info.
Texhotrod593
10-23-2009, 12:39 PM
OK..So I torque bolts 1-10 to 22ftlbs..
then mark them, turn an addition 90*
then 1-8 an additional 90*
and then 9 and 10 50*
ending with the 5 top bolts.. 11-15 @ 22 ftlbs..
Sounds about right??
Thanks again for the info.
yes as long as you are using factory stretch bolts, you have all that right. is this your first time torqueing these heads??
ThunderZ28
10-23-2009, 02:02 PM
yes as long as you are using factory stretch bolts, you have all that right. is this your first time torqueing these heads??
first time these heads have been off the car..yes..
First time putting a set of heads on... no
I have all new GM bolts.. putting the heads back on tonight, and needed to make sure I had this right before preceding.
Texhotrod593
10-25-2009, 10:31 AM
did you ever get those heads on? howd it go?