This depends on what your end goals are. You can't go wrong with the following for up to 35 PSI:
Head gasket: Felpro Permatorque MLS
Head studs:Standard ARP or L19
Setup #2: (Shep and John Wigger use and recommend)
Head Gasket:OEM MLS
Head Studs: Standard ARP or L19
Head O Rings: Steel
Important: The difference between the Felpro 1153-1 and OEM MLS is the Felpro has a built in o-ring and the OEM does not.
A note on L19 and A1 studs
As far as the L19, A1 head studs vs. standard ARP... I would suggest that the L19's and A1's can offer higher clamping loads, but that requires you to apply more torque to the studs to acheive this. Our cylinder heads can not really take the increase load. To be honest, at those loads, you begin to crush the seats around the studs. The structure simply cant take all that the L19 and A1's have to offer. I would really suggest saving the money and going with standard ARPs. A lot of the 8 and 9 second cars run the standard ARPs without issue.
AWDDSM95 @ DSMTuners
Headgasket for 35-40psi??
You must ensure that your block and head mating surface are pristine if you want to run really high boost.
Anything sub-par and it does not matter what headgasket / studs you use.
Aim for as smooth a finish as you can get. (around 10 micro-inch)
It must be under 30 micro-inch finish.
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