SBC V-Belt Pulley Set 3Pc.

The MARCH PERFORMANCE SBC V-Belt Pulley Set 3Pc. (Part Number 6170) is a three-piece aluminum pulley kit engineered specifically for small block Chevy engines requiring optimized water circulation. This kit features two-groove V-belt design with a long water pump configuration and clear powder coat finish, delivering the high water flow ratio necessary for demanding engine applications where cooling efficiency is critical.

The aluminum construction combined with clear powder coat protection balances weight reduction with corrosion resistance, a key consideration for street performance and racing builds where underhood durability matters. The two-groove V-belt design allows simultaneous operation of multiple belt-driven accessories—alternator, water pump, and other serpentine components—while the long water pump configuration ensures maximum impeller displacement per engine revolution. This geometry directly translates to increased coolant velocity through the block and heads, reducing hot spots and improving thermal stability during sustained operation or high-load conditions.

This pulley set is intended for small block Chevy engine builders and enthusiasts who prioritize cooling system performance in street, strip, or road racing applications. It addresses the common cooling challenge faced by modified engines operating above stock displacement or boost levels, where factory pulley ratios prove insufficient. The three-piece modular design simplifies installation and allows independent pulley ratio tuning if needed for future modifications.

MARCH PERFORMANCE specializes in high-flow cooling and drivetrain components for small block applications, and this pulley set reflects that focus on circulation efficiency. The clear coat finish maintains visual appeal while protecting the aluminum substrate from oxidation common in high-temperature engine compartments.