black98ws6ta

iTrader: (77)

I bought forged 347 ready to go as a assembled shortblock with stock mains and ARP main studs and it has all of the side bolts missing for the main caps(the external bolts). I am wondering if the mains were machined without these being installed if it would matter? Two, if the stock bolts are torque to yield? My current optins are to:

1. throw some bolts I have in another motor into it(if they arent torque to yield)

2. Buy some new bolts if they are

3. Contact the shop to make sure they were used when the mains were honed. I wouldnt think that these bolts that take 17 ft lbs could move the mains or change anything, as they are torqued to 50-60 ft lbs by four studs.

TIA

chriswtx

iTrader: (5)

there not torque to yeild. They say to replace them in the GM books because they come with sealant on them. So you can reuse them, just put some kind of sealant on them...

black98ws6ta

iTrader: (77)

Ok so that leave's if the block was mchined without the bolts would installing them change anything?

Ellwood

iTrader: (1)

A question comes to mind... Anybody know the details of the line boring process? isn't it common to take a little of the caps when doing it? Wouldn't that lower the side bolt holes? this is a little out of my league, just trying to get a handle on it.

Junior High Director

yes thats how you line bore you take couple thou out of the main cap torque down and your set

Byter

iTrader: (1)

I would double check with the builder. At a minimun, you want to make sure you do things that wouldn't cancel the warranty they gave you.