Vortec small block folks... what are you using for plugs?
 

I'm goign to stock up on some plugs and was wondering about what some of you were using, especially heat-range-wise. I'm using a factory GM plug for auto applications. The heat range is probably more than too hot for the application and running a cooler plug might help fight off detonation (I'm still tuning and would like to run a tad more timing if I can squeeze it out safely).

Thanks!

If i remember right mine are just auto AC R43LTS... they changed the number on that to something new. can't remeber it but the auto store will tell you