LS1 lifter plunger preload

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06-12-2006, 12:34 PM

Phil99vette

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LS1 lifter plunger preload

How much can the LS1 lifters be collapsed before they are completely collapsed? Do they have .050 before the plunger is bottomed out?
Phil

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06-12-2006, 01:03 PM

mr2guru

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stock lifter preload is pretty high ~.080 IIRC so there is probably quite a bit more wiggle room than that even.

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06-12-2006, 01:14 PM

CAT3

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I was thinking it is lifter dependent. I have Morels, so will be different than others.

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06-12-2006, 05:30 PM

vettenuts

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I was recently running my stock lifters at 0.120". I believe I read that total plunger travel is 0.143".

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06-12-2006, 05:59 PM

ROCNDAV

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Phil, you always beat me to the good questions

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06-12-2006, 06:58 PM

Phil99vette

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So, I need to run lifters with .135 of preload, once its hot we'll see .125.

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06-13-2006, 08:20 AM

GuitsBoy

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Quote:

Originally Posted by vettenuts

I was recently running my stock lifters at 0.120". I believe I read that total plunger travel is 0.143".

Ive got a stock lifter in my hand right now. Pushing the plunger down with a pen, I can tell its definately more travel than an eighth of an inch, but not much more. Probably just shy of 3/16. You may be right on the money.

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