Met with a ARP tech at the lucas drag races this weekend and was asking him about bolts vs studs. When he switched the conversation over to rod bolts I learned a few things that were the opposite of what I believed, He gave me a tech book that had all this information in it and I have copied the 3 relevant pages for anyone interested. The first page talks about rod stretch importance which in our case on clones cant be done on the rod bolts. But what I found out most interesting is the effect of various lubricants on the "friction factor" There is a chart on the second page showing the various psi's exerted on the rod bolt when torqued to the correct valve. What stood out to me was the fact that final rod bolt stretch requires a number of re torques as the first tightening will fall short as the bolt burnishes the threads creating false friction. Anyway I am going on too long here are the pages in case anyone is interested.