Generation IV Internal Engine - ARP Stud upgrade need to know wtf folks are doing for torque




Rossko85
06-08-2012, 10:13 PM
I know ARP says what they say...

Ive been doing the reading here, there, and everywhere...and it seems some folks are saying that 80ft lbs for the larger stud nuts and 25ft lbs for the smaller top deck stud nuts is too much? And, that a lot of people are going more like 75 and 22 for that combo...

From what Ive read, the trouble comes when you do passes with like 5-10 minny torques up to the final number...Ive been reading where the 3 pass up to desired tq is the ticket...

Thanks for the help guys...

This is a factory LS4 325ci (5.3L) just a shorter crank to put it in sideways:eek2: car is boosted 10-14psi switched to the studs and ls9/a gaskets


Imstock2
06-08-2012, 11:15 PM
I just followed arp specs and make sure you follow torque sequence... I have about 4k miles since I built this engine and no worrys

Rossko85
06-09-2012, 11:38 AM
thank you for the input sir! Anyone else have .02?


oldngray
06-10-2012, 11:22 AM
Did those "others" engineer that part,do those "others" have their reputation riding on the results, do the "others" have any quality control??? As you said, just my .02....:usa:

ericwilloughby
06-13-2012, 03:46 AM
I'd like a # also. Doing mine this week

SirNemesis
06-13-2012, 03:48 AM
Mine are at 80#/25# with LS9 gaskets. No problems here.

ericwilloughby
06-15-2012, 11:39 PM
I don't understand the arp #'s. they are for the integrity of the bolt with no consideration to pulling the AL threads out of the block.
Or does someone have usage specific #'s?

S10xGN
06-16-2012, 06:52 PM
I don't understand the arp #'s. they are for the integrity of the bolt with no consideration to pulling the AL threads out of the block.
Or does someone have usage specific #'s?

Not gonna be an issue with studs. Bolts, possibly...

ericwilloughby
06-16-2012, 07:03 PM
Alright. Then what are the official numbers. I'm going from arp bolts to comp electronics studs on ls9 gaskets