I am taking my block to the machine shop tomorrow to start my rebuild project. I have decided to go with ARP fasteners pretty much all the way through. The question is, my shop manual instructs 55lbs on the inners and 21 on the outer bolts (of coarse this is OEM Bolts) but the instructions that came with the ARP studs says 75 with ARP moly. Are all the studs (inner and outer studs) to be torqued to 75lbs? Just wanting to make sure on this so the machine shop gets my line hone correct.

Thanks in advance.

The torque spec sheet ARP sends is only correct for the larger 10mm(?) main studs. You'll break the smaller 8mm bedplate studs if you try torquing them to 70 ft lbs. I had to call ARP to get the correct torque spec, which I think was 21 ft lbs (same as stock bolts). You should probably call ARP to confirm that.

Called ARP and this is the specs that they gave me.

This is for "STUDS" and using "ARP Moly"

Inner Studs (11mm) Hand Tight and then 3 step to 70 foot lbs
Outer Studs (8mm) Hand Tight and 3 Step to 22 foot lbs

The order goes the same as the Shop Manual

Thanks dougie2 for info!

Hmmm, that's interesting ... I wonder if that's why I spun a main rod bearing in the first motor I built a few years back.

1999 Eclipse GST 4G63