timing chain slack
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From: Central Illinois
timing chain slack purchased a new In-Motion LS2 timing chain and gears for the new build. working on the stock 99 block and crank. during install i noticed what i think is a excessive amount of slack(5/16"-3/8"). there was a Rollmaster double roller set already there from the previous owner, which i replaced because of the same problem. to my knowledge and from what i could tell during removal/disassembly, there has been no previous machine work done to the block.
what is the specified amount of slack for the LS1 and is there maybe a tensioner/damper upgrade available?
what is the specified amount of slack for the LS1 and is there maybe a tensioner/damper upgrade available?
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
There is a tentioner availabe and requires block drilling/tapping.
But the slack is normal at those specs. You want some slack because of the cam bearing softness. Too tight and it will wear out the front bearing prematurely.
But the slack is normal at those specs. You want some slack because of the cam bearing softness. Too tight and it will wear out the front bearing prematurely.
