No problem man. Just glad to help.

 

Autolites are good for people making big power trying to run a number. NGK uses a softer metal on the ground strap so you'll wipe out the plug before you wipe out a piston... use NGK's 8's to tune the motor and Autolite 103's to make the record

 

Term told me to get the original plugs, and gapping at 0.35 before i get tuned...so obviously from experience, the stockers are best

 

I haven't had any big turbo friend's have much luck with Autolites. N/A guys, that's a different story. Some brands just doesn't work well in certain applications though. This may be a case of that. I ran Autolites in the Cobalt for like a week once but only because I was waiting on the NGK's to come in since the local powersports store was out (I run a Precision HP5557E w/ Billet Wheel, for those that don't know). I had to gap those things at like .026 to keep from breaking up in the upper RPM. NGK's were put at .032 and did phenomenally.

 

NGK 5476 are the stock plugs. Pull one and look at the engraving on the body below the hex...