Chevy Nova Forum banner
1-1 of 1 Results
  1. Drivetrain & Performance
    The original owner of my '75 Nova (350 2 barrel) ran 87 octane since day one. The cats are long gone, and the timing is advanced 2 degrees. The car runs fine, no knocks or pings. Should I stick with 87 octane?
1-1 of 1 Results