View Full Version : Rocker Arm Torque Specs
05-29-2004, 12:32 PM
I found some #'s off 60 degree, but my haynes manual has other numbers. Which one is correct. Please help.
05-29-2004, 05:19 PM
89 in-lbs + 30°. I'd go 45° though, mine seem to tick a little on a cold start, still gotta fix that..
06-03-2004, 08:11 PM
14 lb ft, +30 degree's... the rocker stud threads have a tendency to pull out easily.
wouldnt go much more than that.
tightening the rocker arm bolts an extra 15degree's is not going to tighten them down on the pushrod that much more to reduce a tick. if you have a tick its due to the camshaft design of the press on lobes on the 3x00 engines.
or you have too much clearance and not enough pushrod preload on the lifter.
stick to the proper torque specs.
06-03-2004, 08:19 PM
Those are the specs I printed off of Mitchell.
06-04-2004, 05:50 PM
what i posted is the actual GM specs.
06-07-2004, 02:47 PM
I stand corrected. I'm holding in my hand exactly what I printed off of Mitchell a month ago, "3.4l V6 2001 Pontiac Grand Am SE" and it says 89 in-lbs. But then I looked at Mitchell today for something else, and it says 14 ft-lbs. I'm absolutely confused. That would mean that my rockers have in fact been fairly loose for over a month. That's wonderful news. I wonder what damage I've done.
06-08-2004, 11:41 AM
Ok, I just looked again, it says 14 NM or 124 in-lbs. 14 ft-lbs = 168 in-lbs. 124 still left a little play though....so I went with your 14 ft-lbs...and all seems well.
06-08-2004, 12:45 PM
Valve Rocker Arm Bolt
19 N·m + 30°
14 lb ft + 30°
Straight from GM. (i work as a tech eh) i dont trust haynes, or michell or any other specs..
haynes had an error in one of thier books for a completely too loose Con Rod spec and my buddy lost his brand new engine due to it...
06-08-2004, 01:30 PM
Well, either way, they're now set to 14 ft-lbs, and it's nice and quiet now. :thumbs:
Thanks for this post guys. :applause:
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