Im switching to NSA rockers this winter with the GMPP guideplates, is the stock rocker going to have enough thread in it to screw into the head? if not, which 3/8 studs should I buy... part numbers if you guys could help me, thanks alot.

 

I would use the ARP studs.. have had good luck with them. if i get a chance i will try get my part a part number.

 

if you are making the change to nsa you may as well upgrade to 7/16 studs. you have to change the studs anyway and they dont cost anymore. +1 for arp

 

Check the GM guideplates for hardness before you put them on. Some have been reported to not be hardened properly.

 

how would i check them for hardness???

 

A fine tooth file will skip off the edge of the guide piece (lite force). Check it near the groove. Do not touch the PR groove. A file will bite into soft metal. B.

 

Get the Trickflow guide plates and you won't have to worry about the hardness issue. Oh, and they're cheap ~$15.