Where can I find torque specs?

A&Q about 350Z
Q:

1997 Chevy Astro, 4.3 V6, 2wd, air conditioning

I have a new idler pulley, tensioner pulley, and tensioner pulley unit and I need the torque specs to install these 3 bolts. My Hanes manual has nothing on this. I won't just fudge it and guess because I'm stubborn about doing the job right the first time. Too many issues already with this van to spend another day removing engine covers and fan shrouds on a botched installation job.

Where can I find these torque specs?

Is there a complete torque spec listing for all bolts on a vehicle, and where would I get it?
A:

try internetautoguide.com
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