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What would a good gap be for a forged internal, AFR headed, cammed 01 C5. I have nitrous on the car but never use it so figured i could swap the plugs and open up the gap.
I think 54 was stock should I go back to that?
Oh and TR6's should still be used correct?
FWIW,,The book on the newer Delco Iridium plug is .040..and my stock motor really perked up,,ran a 13.08/110.23 shortly after install. Only running a Blackwing and Corsa Touring! .040 is a good all around number,,even if you decide to try the juice!!
I did have a decent coating of oil on all the threads. The back passenger side plug had the most on it. Is oil on the threads blow-by or is it somewhat normal?
On the threads only?? How did the plug tips look? Any external leak sources(like valve covers)? Basically oil on threads is not normal,,need to locate the source!!