I have a question about the stud kit from ARP. The original Main Bolts have a 9/16" shoulder diameter that extends 5/16" below the 3/4" hex-head, which then tapers down to a 1/2" for the rest of the length of the bolt. I was told that this shoulder was necessary to keep the main caps aligned properly, since the bolt hole through the cap is just over 9/16". The guy at my machine shop told me that the main stud kits he's seen do not take these shoulders into account and they just send 1/2" studs, which could allow the caps to move. The main caps on 235/261's do not use any built in positioning studs, so there is nothing to prevent cap movement except the original main bolts 9/16" shoulders. I have not seen the ARP main stud kit myself, so I am hoping they did take this issue into account and that the upper portion of the stud measures 9/16". Chiefoldephart can you tell us the dimensions of the studs in the ARP kit you purchased?
