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

1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time