gen3performance

iTrader: (9)

I'm going to be assembling my LSX 427 tomorrow. Just wondering what I should use for my main bolts. I have the main bolts that came with the block and a set of used ARP main studs.

1badA3Z

iTrader: (58)

If i had spent the money for a 427,i would have good main studs in it for sure,jmo tho!

supersub

iTrader: (25)

I would check them for fitment?thought i seen a thread somewhere that the nuts dont fit or hit each other clearances???? I decided to stick with the stockers.

Phil99vette

iTrader: (11)

Old style ARP with the smaller m12 nuts.

WE TODD DID

iTrader: (2)

Don't use main studs without checking for main journal distortion.

OneQuickCoupe

iTrader: (1)

+1. That is correct. You should have already checked the line bore of the mains with the fasteners that you will use for the build. I would use the stockers in this case, (if you are set on building it today). If you wanted to use aftermarket studs you should have mocked up, (torque the mains) everything then did the line bore check and set the bearing clearances.

D.J.

DanZ28

iTrader: (5)

Ditto on that. I would use the ARP's if possible, much better than the stockers. BTW, my machinest was able to use the 15mm nuts no problem on my LSX block, they were close but fit using a good socket. I now have 20 brand new 12mm nuts I don't need . They also come with the side main studs now too, which I didn't know (didn't use to) and have an extra set of those too...

Dan

427

iTrader: (3)

I have used the larger nuts that take a 17mm socket also. You need a thin wall socket to tighten them, but the nuts do not touch each other or interfer with anything. You should check dimension of the main hole with the fastener you choose.


Kurt