mitchcole

Anybody use them? I'm about to. I found them on the auction site thinking they were the appropriate part number.

There's very little info on the ACDelco website. I can't tell if the heat range is correct or if they are identical to the 41-985.

They are iridium with the 40 gap.

Too late to stop now.

VinnyT

You're fine. 41-110 is the new number for 41-985.

mitchcole

I finished putting them on. The old plugs were original with 130K on the clock. New plugs, new wires.

Can't tell I did a thing. Idle = identical; part throttle = identical; full throttle = identical.

What an incredible ignition system - same response running 0.070 vs 0.040 of the new plugs. They all looked fine coming out of the engine. It wasn't even hard to get them out.

WAAAAY easier than the LT1.

MickVette

Another helpful post for this new Corvette owner to read. Thanks guys! Time to change some plugs and wires.