Originally Posted by RacinNdrummin

Being you have the Actual ARP Supplied Stud kit, they are ARP2000 Material, which means you could even go more if you wanted. All the testing Ive done has been on the 8740 Studs, and they will take 170-180ft/lbs before Yield. The ARP2000 Material is about 10-15% higher in strength, so Im sure these would see upwards of 200ft/lbs before permanent stretch... I haven't got to test one yet because you cant just buy single ARP2000 studs. I don't think these are necessary on the 7.3, the 8740 stuff is proving itself well on high boost stock compression engines, even with stock type crappy HG's. However, I will be Running a set of these on the P-Pump build with Fire-rings, and I will run them to at least 170ft/lbs, Possibly 180...

Everything Aside, You wont see any detrimental effects of running these to 150. The Head fastener bosses are all tied to the bottom of the block, not the cylinders, so bore distortion is almost non-existent, the extra torque is going to transfer directly into clamping force on the gasket, and that's it.

Originally Posted by 88 Ford IDI

How much are the ARP2000 studs? I didn't know they were producing them for the 7.3...

Originally Posted by d-day

A lot lol! I think I paid about this price
ARP Pro Series Cylinder Head Stud Kits 250-4204 - Free Shipping on Orders Over $99 at Summit Racing

I ended up torquing to 140ft-lbs, I couldn't go anymore because the engine would move around on the pallet lol

Originally Posted by Ford F834

Ouch. R&D beats that price by... well...
Stud Kits

Originally Posted by 88 Ford IDI

Have you thought about upgrading your turbo at all? As much money as you have into your setup, you might as well. Even with the 90cc IP you are limiting yourself and it would run a lot stronger with an upgrade. Even a compressor wheel upgrade would help IMO...