ACCEL Adjustable Vacuum Advance - GM / HEI Distributor w / Vacuum Advance 931121 All NecksGen REV 2 LITE

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

and velcro

Black Oxide Coated Drop Forged Steel Hardware

the 3-Stage High-Performance Filter Kit is built for extreme dust

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

ACCEL Adjustable Vacuum Advance - GM / HEI Distributor w / Vacuum Advance 931121 All NecksGen REV 2 LITEPermits 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