LT1-LT4 Modifications 1993-97 Gen II Small Block V8

adjusting rockers

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Old 09-25-2016, 01:02 AM
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Default adjusting rockers

I have a question on adjusting rockers on my 1996 impala SS, which is better for adjusting rockers while the engine is running or while the engine is not running?

I know how to adjust the rockers while the engine is not running turning the crank by hand, what is the way of adjusting the rockers while the engine is running?

thanks for help.
Old 09-25-2016, 02:49 AM
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I have always used the EOIC method. I have never adjusted them while the motor is running.
Old 09-25-2016, 07:00 AM
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I've done it both ways - either works quite well. The engine running method makes a bit of a mess, though.

Get the engine warm, pop off the valve cover. Start the engine back up and go to the first rocker. Slowly loosen the lock-nut until it starts clattering (its quite obvious). Then tighten the nut until it stops clacking. Go 1/2 - 3/4 turn more. Repeat the process 15 more times.

Last edited by atlantadan; 09-25-2016 at 07:58 AM.
Old 09-25-2016, 07:45 AM
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I've done several methods. I like the engine running method because you can hear the clacking but it can get messy. I took a used valve cover and cut the middle section out of it making adjusting the valves virtually mess free. The legend shbox explains several methods in the link below including the engine running one. It's about half way down the page.

http://shbox.com/1/4th_gen_tech2.html#adjust_valves
Old 09-25-2016, 11:51 PM
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OK. thanks for the replies.

what EOIC stands for?
Old 09-26-2016, 02:20 AM
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Exhaust open Intake closed?
Old 09-26-2016, 09:50 AM
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Originally Posted by Abdullah
OK. thanks for the replies.

what EOIC stands for?
Old 09-27-2016, 12:05 AM
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when I had my 1994 Z28 Camaro I always did the EOIC method with 1/4 turn, the 1/4 turn was good for me. what do you think about the 1/4 turn?
Old 09-27-2016, 09:54 AM
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Your choice.
Old 09-27-2016, 02:45 PM
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I always use the EOIC method as an initial set up, then make final fine adjustments with the engine running. Works well for me.
Old 09-27-2016, 11:47 PM
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OK, thank you for the replies.
Old 09-28-2016, 04:52 AM
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Originally Posted by FIVEPOINT7
I always use the EOIC method as an initial set up, then make final fine adjustments with the engine running. Works well for me.
I believe that would work well, especially when adjusting hydraulic roller lifters with specific preload.
I always use the EOIC on my solid roller.
Old 09-28-2016, 06:12 AM
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Originally Posted by Abdullah
when I had my 1994 Z28 Camaro I always did the EOIC method with 1/4 turn, the 1/4 turn was good for me. what do you think about the 1/4 turn?
With OE Chevy lifters, I'd be more inclined to go 1/2 turn, and for what it's worth, I always adjusted them with the engine fully warmed up and running.
Old 09-28-2016, 09:01 AM
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I have seen many people make mistakes with the EOIC method because they are just not savvy enough to know. so if your not sure, do it with the engine running, I do the EOIC method to get the engine up and running and for the final adjustment, I readjust with the engine running, thats just my method, do what ever you feel comfortable..
Old 09-28-2016, 03:38 PM
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Originally Posted by BOLO
I believe that would work well, especially when adjusting hydraulic roller lifters with specific preload.
I always use the EOIC on my solid roller.
Didn't know you were solid roller. I agree on EOIC for a solid setup.



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