If it is short don't use it. This is simple to solve. Example: 13 threads per inch = .500 X 1.5 = .750 = or 9.75 threads min. Remember the more the better.
Studs and bolts use the same formula for thread engagment.
You must use ARP assembly lube to get the proper torque on the nut. Use it on the threads and under the washers too. You do not need to put it on the threads that are in the block because you are not turning the stud, you are pulling on the stud. Torqueing the nut causes the stud to stretch. This stretching is compression that will hold the cap in place.
You can do two things when torque is needed on a rod cap. 1. Torque to the amount needed. 2. Measure the amount of stretch of the bolt that is specified by the manufacture.
All of the IA II blocks are torque before line boring. We use ARP studs in all five caps.
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 Bob C.
Quickest, Fastest, Best selling Pontiac Aftermarket Block IA II and Tiger Heads
Boss Bird Funny Car
Best pass to date 08/06/2016 [email protected]
Allpontiac Big Chief Aluminum Engine Block
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