Good Morning, I'm installing external component parts on my ZZ4 prior to the new installation and wondered what torgue value is good for bolting on the the exhaust manifolds, torque converter, transmission and general equipment. The ZZ4 has the aluminum heads and I don't want to torgue the bolts too much on the manifold as to damage the heads. Also is there any treatment or something I need to put on the threads of the bolts other than oil?

Trans to engine = 35 ftlbs
Converter to flywheel bolts/nuts = 35 ftlbs
Exhaust mfld to engine = outer bolts 20 ftlbs / inner bolts 30 ftlbs
Intake to engine = 30 ftlbs
Flywheel to engine = 60 ftlbs
Harmonic Balancer = 60 ftlbs
Head bolts = 65 ftlbs
Oil pan bolts = 80 inch pound
Valve cover bolts = 45 inch pound

All of these values are straight out of the GM service manual...I happen to think most of them are a bit light, except the valve cover/oil pan specs.
Your heads don't have the heli-coils in them??? I thought all of them did, but....I could be wrong. I wouldn't use any kind of thread-lock on any of it, except possibly the flywheel/engine bolts, the balancer bolt, and the torque converter bolts/nuts.. If the bolt threads, AND the threads in the engine are clean/dry, you should have not problems. Head bolts should have a light drop of engine oil on them before torquing. Intake bolts should get a light dab of Permatex Aviation Sealer, to keep oil from "wicking" up the threads, and out onto the intake manifold surface.
hth

Joel, Thanks for the information! This is just another good example why I joined this site. Quick replies and great usable information.......