ARP mains

ilikebigbutts

workin' my dream
Jun 10, 2007
347
0
0
35
Pittsburgh
getting ready to put my block togetehr when i noticed the arp main studs i got have 12 studs and nuts and two bolts...where are the 2 bolts suppose to go?middle cap with the thrust washers or main #1 with the widest bearing?
 

ilikebigbutts

workin' my dream
Jun 10, 2007
347
0
0
35
Pittsburgh
i just called arp and tehy said the go on # 3 cap, i'm guessing cause the oil pump goes on top of it.studs might cause clearance issues...
 

ilikebigbutts

workin' my dream
Jun 10, 2007
347
0
0
35
Pittsburgh
I knew you would eventually chime in :icon_bigg

Now where do you torque these to?80 ft lbs?In the back of the ARP box it says Torque specs are not specific.
 

IJ.

Grumpy Old Man
Mar 30, 2005
38,728
0
0
61
I come from a land down under
I use 85 ft/lbs.

It's important to do them in steps 30/60/85 and crisscross starting at the centre and work out in a spiral.

You also want to torque them to 80 using the above method (saving 85 for the final install) and then undo them in sequence 2>3 times to burnish the threads as you can't do a retorque once installed.