At what point will i need arp main stud kit? Planning to hit my car with 400 shot will stock main studs work or do i need to go beefier

 

ARP for safety

 

I wouldnt be the least bit surprised if the stock main studs held. Im sure someone somewhere has done it time and time again. However, if the motor isnt something you want to replace I would spend the extra money and put arp main studs in there along with rod bolts and head studs. Add strength now for peace of mind and reliability later.

 

I have arp 2000s in rods and head studs was just curious about the mains because i know people fly with sbe

 

The 454R LSX crate engine uses stock main bolts and makes about 700hp IIRC. Just food for thought.

 

I did not know that. That is indeed food for thought

 

You will need to do a line bore if you use studs.

 

Perhaps not a line bore, but a line hone indeed. The greater clamping force of the ARP main studs will distort the main bore to some degree.
Lots of guys run totally stock bottom ends with turbo setups, and have little to no problems with the GM hardware.

 

Anyone have any real experience in this subject? What numbers have been put down with stock main studs. My car will make roughly 900 on spray to the crank.

 

Denmah made 1076whp on SBE 6.0L...

 

yeah but he also bent rods and sizzled some rings getting there.

my experience with nitrous has been that it's power is a bit harder on the bottom end than turbo.

 

You mean when he give it enough fuel? Same stock bolts when back in though and made the 1076 number though.

I agree though, nitrous is normally harder on parts at the same power.

 

Do it, just so you can say you did. I've notice the the 12 point nuts in an ARP stud kit have wider base than stock bolts. You get a more accurate degree of clamping with ARP because you're using a finer thread with the nuts that will hold your caps in place. Other than that? Total waste of money. Don't forget to line hone and have your ARP hardware in and torqued if you bore and hone your block.

 

Better thing to do is pin the mains...

 

Back from the dead. If only someone around here in OH, KY or IN pinned the mains and using solid pins. If anyone knows of a shop in these areas that does it…..