Maurice Lobo

Trying to torque my rod end cap bolts and the specs say ;

Connecting Rod Bolts - First Design (First Pass) 15 lb ft
Connecting Rod Bolts - First Design (Final Pass) 60 degrees
Connecting Rod Bolts - Second Design (First Pass) 15 lb ft
Connecting Rod Bolts - Second Design (Final Pass) 75 Deg

I have a 99 LS1 out of a trans Am I am trying to determine if I have a fist or second design.

I am assuming I have second design but with something as critical as rod bolts I want to be sure..

Can the stock rod bolts be reused? or are they a one time bolt due to streatch?

Breaking Stuff

iTrader: (11)

If youre in there, you may as well upgrade the rod bolts. I wouldnt put stock ones back in.

blades11b

iTrader: (1)

i know tht when i bought a brand new LS1 for my 01 Camaro i came into some differences pertaining to Head bolts with old and new design becaue in like 03 they changed alot on them and the head bolt length's changed you might be in the same boat if the rod bolts cahnged in the same time frame just look it up with GM

Russ K

iTrader: (1)

As per the latest ALLDATA, the bolts are torqued to 15 ft lbs, then 85*.

Before the latest update, the second design bolts (with sleeve) were turned 75*, and the first design bolts were turned 60*

Russ Kemp

the elite

Is this for all rod bolts now? Doesn't matter style 1 or 2?

moekluse

iTrader: (2)

I believe these bolts are stretch fit and should be junked after 1 use. That the case with the turbo 4 cylinders I've worked on. I'd just go with arp studs

the404man

The fist design rod bolt has dog bone with one dot on the head of the bolt and no retaining sleeve, the second design rod bolt has dog bone with two dots on the head with retaining sleeve on shank.... idk much about first design but i reuse 2nt design all the time 2 and 3 times over.. spinning the engine to 6,400rpm + on stock set up with a little bump in power with a mild cam, just dont over torque/angle them hope this is helpful to you and others peace

JC316

iTrader: (1)

If you go with upgraded bolts, you have to get machine work done on the rods and get oversized bearing bearings.

No, they are torque to angle, not torque to yield. Even GM says that you can reuse them.