Originally Posted By dartman366
Originally Posted By pittsburghracer
Originally Posted By Sammy
NGK 5672A-9 from 14-15.5 Compression is what my friends use on their B1 engines



NA or nitrous. Thanks Sammy
I run the 5671a-9 in my car and it is NA and 12.3 comp ratio


That's a bit cold for that compression imo and I run 8's at 12.1.1..I agree on 9's for Pittsburghracer though...........

Last edited by Thumperdart; 04/13/18 02:33 AM.
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