Rocker arm question

Demojr90 · 04-14-2021, 01:53 PM

I have some new trunions and bushings on the way since my old ones wore out on me. So I have some questions about install. First of all is there a difference between rockers? Intake and exhaust side? Also, I see that the torque is 22ft lbs. Should I make sure the cylinder is at TDC before torquing? Or will the spring and lifter absorb the torque down to spec? All input is appreciated.

KingLT1 · 04-15-2021, 08:49 AM

I don't believe the rockers are offset like the LS3 was so no it shouldn't matter. And no you don't have to torque them down @ TDC. You can put them all on and torque them to 22ft lbs. Some say you should as good practice but I have done it both ways and never seen any difference.

Demojr90 · 04-15-2021, 02:59 PM

Thank you! I hate that I even have to crack the beast open, but after a tip that the bushings I had go bad I had to check, and I am glad I did.

04-14-2021, 01:53 PM	#1
Demojr90 Drives: 2016 2ss Track Attack Join Date: Oct 2016 Location: St. Louis Posts: 29	Rocker arm question I have some new trunions and bushings on the way since my old ones wore out on me. So I have some questions about install. First of all is there a difference between rockers? Intake and exhaust side? Also, I see that the torque is 22ft lbs. Should I make sure the cylinder is at TDC before torquing? Or will the spring and lifter absorb the torque down to spec? All input is appreciated.

04-15-2021, 08:49 AM	#2
KingLT1 Drives: 2016 1SS NFG A8 Join Date: Aug 2017 Location: 46804 Posts: 6,786	I don't believe the rockers are offset like the LS3 was so no it shouldn't matter. And no you don't have to torque them down @ TDC. You can put them all on and torque them to 22ft lbs. Some say you should as good practice but I have done it both ways and never seen any difference. __________________ 2016 NFG 1SS A8 Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA

04-15-2021, 02:59 PM	#3
Demojr90 Drives: 2016 2ss Track Attack Join Date: Oct 2016 Location: St. Louis Posts: 29	Thank you! I hate that I even have to crack the beast open, but after a tip that the bushings I had go bad I had to check, and I am glad I did.

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