Proper head stud install technique
Thread Starter
Joined: Nov 2009
Posts: 1,621
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From: THORNTON, PA (NEAR PHILLY)
Proper head stud install technique Can you guys give some tips on the proper installation of these China specials?
ARP says 80 lbs for the 7/16 studs and 5/16 get 25 lbs. Would you guys use these figures??
ARP says 80 lbs for the 7/16 studs and 5/16 get 25 lbs. Would you guys use these figures??
IF you have all the same length studs gen 4 engine I would not be scared to go 75
if gen 3 i have snapped off one of the long bolts trying to get to 75. so I have been stopping at 70 on gen 3 engines
if gen 3 i have snapped off one of the long bolts trying to get to 75. so I have been stopping at 70 on gen 3 engines
Thread Starter
Joined: Nov 2009
Posts: 1,621
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From: THORNTON, PA (NEAR PHILLY)
I have the pre '04/different length jobs. I just check the ebay sellers recommendations and they have 65-70lbs and 23lbs along with ARP lube listed. Looks like they recommend lower to avoid issues.
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Thread Starter
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From: THORNTON, PA (NEAR PHILLY)
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On The Tree
Joined: Sep 2010
Posts: 126
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From: Old Bridge, NJ
Hey Matt,
The proper procedure for torquing the LS1 head studs is as follows:
If using moly:
First pass 25lbft second pass at 50lbft, and finally a 3rd at 70lbft
Install the 5 smaller bolts and torque them to 22lbft
If using motor oil:
First pass 30lbft second pass at 60lbft, and finally a 3rd at 80lbft
Install the 5 smaller bolts and torque them to 28lbft
These instructions should generally be the same as found with ARP studs. When in doubt, their torque specs may be applied to the studs we sell. Let us know if you have any other questions, we can be reached by email or by phone!
Thanks,
Chad Kulig
KMJ Performance
107 Industrial Park Road
Story City, IA 50248
515-733-2890 x219
www.kmjent.com
^taken from denmah's sloppy mechanics silverado thread.
The proper procedure for torquing the LS1 head studs is as follows:
If using moly:
First pass 25lbft second pass at 50lbft, and finally a 3rd at 70lbft
Install the 5 smaller bolts and torque them to 22lbft
If using motor oil:
First pass 30lbft second pass at 60lbft, and finally a 3rd at 80lbft
Install the 5 smaller bolts and torque them to 28lbft
These instructions should generally be the same as found with ARP studs. When in doubt, their torque specs may be applied to the studs we sell. Let us know if you have any other questions, we can be reached by email or by phone!
Thanks,
Chad Kulig
KMJ Performance
107 Industrial Park Road
Story City, IA 50248
515-733-2890 x219
www.kmjent.com
^taken from denmah's sloppy mechanics silverado thread.
Thread Starter
Joined: Nov 2009
Posts: 1,621
Likes: 31
From: THORNTON, PA (NEAR PHILLY)
ARP calls for 80, and the thread pitch is the same as the Alper studs. I'm thinking you are giving up head gasket clamping by only going to 70. JMO
Thread Starter
Joined: Nov 2009
Posts: 1,621
Likes: 31
From: THORNTON, PA (NEAR PHILLY)
Probably should add another 5 lbs after a couple of heat cycles and letting everything get to know each other.
