Adjustable Timing Control - 8680 edge they can be trimmed if

they can be trimmed if necessary for modified port applications

453) or Borg Warner Super T-10 (454) 4-speed transmission: 1969-1979 Chevrolet Corvette

For Dana 30 Front Axle

5L V8 1973 Pontiac LeMans Luxury 455/7

100% Stainless Steel

Adjustable Timing Control - 8680 edge they can be trimmed ifOverview: A dash mounted control knob allows you to adjust the ignition timing to compensate for changes in altitude, low octane gas, or heavy loads. For cars driven every day but raced occasionally on the weekends, this control is perfect. Increased fuel mileage and performance are just some of the benefits as the ignition timing can be advanced or retarded to prevent engine detonation. The control knob mounts to the dash board for easy and accurate