06-19-2025, 09:03 PM

JLMounce

Ultimate Warrior

Join Date: Sep 2005

Location: Greeley, Colorado

Posts: 4,541

Quote:

Originally Posted by wh33lman

Our motors sound very similar. Although my vid was in the garage with hood open and close to headers.

What are the specs of the Short Travel lifter? The Reduced Travel is .093" travel, preload .035" +/- .010".

It is a rain day so I think I will bump up the preload from the current .025" to .035".

The ST21120PR has .058” of effective plunger travel. I believe Johnson wants the preload towards the bottom of the travel on these.

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-Jason
1969 Pontiac Firebird

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