LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

rocker lash setting poll

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Old 06-04-2004, 09:37 PM
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rocker lash setting poll

Just curious,

For those of you who have installed a cam and rockers, how many of you re-adjusted the rockers shortly after running the car? And, did you notice a difference?
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Old 06-04-2004, 10:48 PM
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1/2 past; never touched them again.
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Old 06-04-2004, 11:15 PM
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I do mine 1/2 past as well. just bring up tdc on #1 and follow the book then bring up tdc on #6 and finish. I have no problems with this method.
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Old 06-05-2004, 04:36 AM
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I went ½ with Crane lifters. Apparently you barely have to use any with R's though...
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Old 06-05-2004, 08:25 AM
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I have the Pro Mags, and initially adjusted them at 1/4 past snug while putting the engine back together. Was wondering if anyone readjusted theirs shortly afterwards after running the car a few times and getting some heat cycles into the setup
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Old 06-05-2004, 09:25 AM
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About 1/16 turn past zero lash with Comp Rs. Any more and you risk collapsing them.
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Old 06-05-2004, 10:26 AM
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acctually with Comp R's you don't risk collapsing them, problem with going tight on them is at high RPM the plunger will extend full like a solid lifter is basicly, this will keep your valve from closing all the way so either you valve float or bend some valves/pushrods when piston hits valve.
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Old 06-05-2004, 11:08 AM
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Great info everyone.. I'll probably try to adjust them here tonight or tomorrow while idling before I take the car off the ramps..
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Old 06-05-2004, 11:29 AM
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Originally posted by RamAir95TA
About 1/16 turn past zero lash with Comp Rs. Any more and you risk collapsing them.
Oh so not true. I went 1/4 with my Comp R's. Shoebox suggests 1/2 turn with them, but also agrees 1/4 should be fine.
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Old 06-05-2004, 04:20 PM
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I go 1/4 turn past lash, lock um down, and never have had to readjust them. I prime the engine prior to finding zero lash.
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Old 06-05-2004, 04:38 PM
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Umm.. It is true, sorry bud but if you're going 1/4 turn then your obviously starting to loose power at high RPM, try 0 lash while car is running & see the difference for your self, anything past 1/8th of a turn & even 1/8th at times my car would rev past 6200rpm or so & would hit a wall.
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Old 06-05-2004, 05:36 PM
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Cool I can find out for myself then,

I'll leave them as is for now and I'll readjust them afterw driving it for a week or so and see if I note a difference
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