rocker arms

[Mart86&04]

Spark plug gap

What is the correct spark plug gap for a 04 LS1

 

[c4c5specialist]

What is the correct spark plug gap for a 04 LS1

HI there,
If you use ACDelco plugs, 41-985, they are pregapped and should NOT be changed.
If they are not at .040, then return them and get new ones.
Allthebest, c4c5