TurbopigB4C

iTrader: (5)

Is it absolutely necessary to measure rod bolt stretch or can arp rod bolts just be torqued?

Old Geezer

iTrader: (3)

The stretch method is the correct way.

Paul Bell

iTrader: (9)

The stretched method is the best and most correct way but ARP can provide you torque specs when using their thread lubes that'll match the stretch measurement.

01ssreda4

iTrader: (96)

^^Agreed. Stretch is best, but not absolutely mandatory.

Jim85IROC

iTrader: (6)

When I installed mine, the specified 75 ftlbs gave me between .004 and .005 stretch. Increasing torque to 85ftlbs still didn't get them all to .005. Out of fear that I would clamp the rod too tight and lose bearing clearance I cried uncle. I called TSP and they agrees that I was best off leaving it as-is, though that doesn't mean that would be the case in a different situation.

RezinTexas

A good friend of mine who is a pro LS1 builder from a very reputable shop says its not necessary. He uses the lube and proper torque and that's it.

That being said, I just purchased a stretch gauge and I plan on using it. But I'm something of a nerd about these things...