Has anyone here changed the spark plugs on a ZZ8 SC? I'm curious what gap others are running.
The PCM manual specifies a 0.040" gap, but that seems fairly wide for a supercharged chevy engine. The reason I'm questioning it is that the factory installed plugs I removed were nowhere near that, they appeared to be left at the out of the-box gap of approximately 0.031".
For anyone wondering, part number R030014 is simply an ACDelco 41-128 spark plug.
The PCM manual specifies a 0.040" gap, but that seems fairly wide for a supercharged chevy engine. The reason I'm questioning it is that the factory installed plugs I removed were nowhere near that, they appeared to be left at the out of the-box gap of approximately 0.031".
For anyone wondering, part number R030014 is simply an ACDelco 41-128 spark plug.