Main bolts

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10-07-2007, 06:40 PM

#11

ifly87

3.0 BAR

Join Date: Dec 2005

Posts: 2,081

Re: Main bolts

Quote:

Originally Posted by slo_crx1

I used ARP main studs in one of my LS blocks only cause I broke one of the stock main bolts when torquing it down. If you get the ARP's you have to line hone/bore the mains.

not doubting you but I was just wondering why? I reused mine anyway but having to line bore just because of new studs doesnt make sense

10-08-2007, 10:53 AM

#12

Slo_crx1

3.0 BAR

Join Date: Aug 2003

Location: NE-PA

Posts: 4,666

Re: Main bolts

Quote:

Originally Posted by ifly87

not doubting you but I was just wondering why? I reused mine anyway but having to line bore just because of new studs doesnt make sense

It's because of ARP's torque specs...they're a little bit higher than factory specs. If you tighten down the ARP's without a line hone/bore it distorts the bore of the journals and in turn can destroy your crank bearings and crank.