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Duncan Rinaldo · 07-14-2001, 03:26 PM

My son has a 1978 Sierra. We have conflicting info in manuals. One says to torque down the rocker arm pivot nuts to 18 -25 ft. lbs. Another says these are used to adjust valve lash. This confusion is probably because one info is for hydralic lifters and the other for non-hydraulics. Question: How can we tell the difference in the lifters? Which do we have?

07-14-2001, 03:26 PM	#1
Duncan Rinaldo Registered User Join Date: Jul 2001 Posts: 1	Hydraulic Lifters? My son has a 1978 Sierra. We have conflicting info in manuals. One says to torque down the rocker arm pivot nuts to 18 -25 ft. lbs. Another says these are used to adjust valve lash. This confusion is probably because one info is for hydralic lifters and the other for non-hydraulics. Question: How can we tell the difference in the lifters? Which do we have?