Hello, How far are people pushing engines on regular rb30 arp headstuds?? Also how many people have o-ringed their block? I am tossing up going to 1/2inch studs and at the same time i will oring th block. I want to know how fast people are going without these things? I am currently running high 9s but am planing to go quite alot faster (hopefully a second ) and have the engine out to put on a better head and check over the bottom end. Thinking i should do the above mentioned things in preperation for the next year of much more boost! Thanks Some original photos have not been recovered yet.

What power are you planning on running? I think thats got alot to do with how far a set of studs will go, in regards to clamping the cylinder head down. The RIPS rail has(or had, not sure of new build) a 1200hp+ RB26/34 that gets by with 11mm RB25DET ARP studs

if you running a multi layer head gasket, you don't o-ring the block cheers darren