ACCEL Adjustable Vacuum Advance - GM / HEI Distributor w / Vacuum Advance 931121 Blue / Black

Blue / Black

1995-1995 Chevrolet W3500 Tiltmaster

Speed Tabs are round vinyl stickers that prevent shredding and ease removal of tear-offs

All NecksGen REV 2 LITE head and neck restraints have passed the mandated SFI 38

Mileage gains are also achievable with our new optimized and efficient tuning

ACCEL Adjustable Vacuum Advance - GM / HEI Distributor w / Vacuum Advance 931121 Blue / BlackPermits practically infinite adjustment to both amount and rate of ignition advance. Instantly increases horsepower and throttle response. Provides maximum possible spark advance while preventing damaging detonation or ''ping''. Includes allen wrench and detailed instructions. Vehicle Applications: 1977 1978 GMC K35 1975 1981 Oldsmobile Cutlass 1977 1986 Chevrolet K30 1975 1986 Chevrolet C10 Suburban 1975 1990 Oldsmobile Custom Cruiser 1975 1987 Buick