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L33T Z34 · 07-24-2013, 03:16 AM

What I use:

1) ARP SS bolt = 3/8-24, 1.5" length, 7/16" hex socket, (725-1500)
2) ARP SS washer = 7/16" ID, 13/16" OD, 1/8" thick (400-8509)
3) ARP SS nut = 3/8-24, 7/16" 12pt socket, (400-8302)
4) Vibrant performance custom 3-bolt gaskets = 2.5"
Torque to ~40 foot lbs on the bolt/nut w/anti-seize.

I only need four total, since the exhaust manifolds retain a stud. I just use the OEM nut (20602-41G0A) on that.

07-24-2013, 03:16 AM	#2 (permalink)
L33T Z34 Banned Join Date: Jun 2010 Location: Ahnald, MO Age: 47 Posts: 387 Drives: 09 K51 G C Bw/S 6MT Rep Power: 0	Test pipe hardware What I use: 1) ARP SS bolt = 3/8-24, 1.5" length, 7/16" hex socket, (725-1500) 2) ARP SS washer = 7/16" ID, 13/16" OD, 1/8" thick (400-8509) 3) ARP SS nut = 3/8-24, 7/16" 12pt socket, (400-8302) 4) Vibrant performance custom 3-bolt gaskets = 2.5" Torque to ~40 foot lbs on the bolt/nut w/anti-seize. I only need four total, since the exhaust manifolds retain a stud. I just use the OEM nut (20602-41G0A) on that. Last edited by L33T Z34; 03-10-2014 at 12:41 PM.