Adjusting valves/lifters?
Premium Supporting Vendor
Joined: Mar 2001
Posts: 5,241
Likes: 21
From: Knoxville Tennessee
I am assuming you mean the rockers... there is no adjustment in the lifters... 
In the service manual there is a specific sequence to it, etc.
I have also heard that you can just torque them all to 22ft lb and rotate the engine 2 complete revolutions, double check them all.
I did this on the last motor I did, went back and checked them after I ran it, worked perfectly.
In the service manual there is a specific sequence to it, etc.
I have also heard that you can just torque them all to 22ft lb and rotate the engine 2 complete revolutions, double check them all.
I did this on the last motor I did, went back and checked them after I ran it, worked perfectly.
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Stock there is not adjustment because the correct lifter preload is built in by GM. If you start changing parts, then you need to worry about wipe pattern on the valve stem and lifter preload but with stock rockers (or an aftermarket fixed fulcrum rocker) the method of adjustment is through shimming and not the pushrod itself.
As for tightening the rockers, there is a very specific sequence that is used to prevent overloading the rocker bolt threads and ensuring the bolts are correctly preloaded.
As for tightening the rockers, there is a very specific sequence that is used to prevent overloading the rocker bolt threads and ensuring the bolts are correctly preloaded.
