Comp cams rocker arm trunnion bolt torque
08-01-2012, 11:04 PM
#4
I dont trust the 22ft lbs spec. I know its straight from GM but its non adjustable and I ALWAYS go 35 ft lbs. If it wont strip/damage the threads why not. Also I always turn the motor to no load, then torque them, then repeat twice. the bolt always torques down more the second pass!
08-02-2012, 08:42 AM
#5
LSxGuy widda 9sec Mustang
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I've found 22lb ft to be insufficient and I've had to reinstall and re-torque many customers rocker arm that ended up loosening on the dyno due to that exact specification. I believe the GM service manual spec is actually 24lb ft, but I've found that 26lb ft to be more on the safe side. I've never had a rocker arm loosen up at 26lb feet. That is what I use on the trunnion kit bolts on several engines a week with no issues. 
Remember to seal your intake rocker bolts with good quality RTV sealant if your heads are ported. The threads alone will not seal and engine oil will be drawn into the intake port from the rocker arm area.
Remember to seal your intake rocker bolts with good quality RTV sealant if your heads are ported. The threads alone will not seal and engine oil will be drawn into the intake port from the rocker arm area.
08-02-2012, 10:04 AM
#7
LSxGuy widda 9sec Mustang
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Sweet, I like the ported 5.3L heads. If there is oil on the intake bolt threads, use some carb or brake cleaner on the bolts and bolt hole threads then air or used compressed air to dry.
