Blower Drive Service 90 Degree Water Neck - 1-1/2 in ID Hose - Polished - Chevy V8 Brake Prop Valve By simply changing the advance

By simply changing the advance springs and stop bushing you can tune in 24 different advance curves

Each kit contains: 2 each - 4 wire Separator

ΓÇó Secondary Metering Plate

1982-1991 GMC C1500

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Blower Drive Service 90 Degree Water Neck - 1-1/2 in ID Hose - Polished - Chevy V8 Brake Prop Valve By simply changing the advanceProduct Description: Water Neck 90 Degree 1 1 2 in ID Hose Gasket Stainless Hardware Aluminum Polished Chevy V8 Blower Drive Service Co. started in 1969 in a one car garage located in Southern California and has evolved into one of the foremost leaders in supercharging today. BDS has sold thousands of blower systems all over the world for all types of applications. The 10,000 square foot modern warehouse facility is the largest in the world devoted