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March Performance Chevy Small Block Serpentine Conversion Kits 6380-08
Part Number: MCH-6380-08
March Performance Chevy Small Block Serpentine Conversion Kits
Pulley Set, Serpentine, Aluminum, Black Powdercoated, Chevy, Small Block, Set of 3
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Estimated Ship Date: Oct 26, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
6380-08
Part Type:
Product Line:
Summit Racing Part Number:
MCH-6380-08
Pulley Style:
Serpentine
Pulley Set Style:
High water flow ratio
Water Pump Style:
Long
Pulley Material:
Aluminum
Pulley Finish:
Black
Water Pump Pulley Included:
Yes
Water Pump Pulley Grooves:
6-groove, serpentine
Water Pump Nose Cone Included:
No
Crankshaft Pulley Included:
Yes
Crankshaft Pulley Grooves:
6-groove, serpentine
Crankshaft Pulley Bolt Hole Quantity:
Three
Crankshaft Nose Cover Included:
No
Power Steering Pulley Included:
No
Power Steering Brackets Included:
No
Alternator Pulley Included:
Yes
Alternator Pulley Grooves:
6-groove, serpentine
Alternator Fan Included:
No
Alternator Nose Cover Included:
Yes
Alternator Brackets Included:
No
Air Conditioning Pulley Included:
No
Air Conditioning Cover Included:
No
Air Conditioning Bracket Included:
No
Idler/Tensioner Included:
No
Idler Cover Included:
No
Idler Brackets Included:
No
Belt Included:
No
Hardware Included:
No
Quantity:
Sold as a set of 3.
Notes:
Fits standard rotation long water pumps only. This set will not work on applications with air conditioning.
March Performance Chevy Small Block Serpentine Conversion Kits
March Performance Chevy small block serpentine conversion kits are mid-mount pulley kits that place your alternator below the centerline of the water pump. They are simple to bolt on, while still retaining your standard-rotation water pump. Serpentine belts eliminate belt throwing. The kits are available with performance pulleys for increased horsepower, high water flow ratios for increased cooling, or mid-performance ratios for a combination of both. The pulleys are CNC-machined from solid billet 6061 T-6 aluminum for a spectacular looking machine finish with a perfect fit and extra-high strength. All March Performance billet pulleys and brackets have a maintenance-free clear powdercoating. These performance pulleys will increase your engine by approximately 12 to 15 hp, depending on the accessories driven. The kits are available with a driver side mounted A/C option. The use of a combination bracket in these kits allows for the addition of an alternator idler, which provides excellent belt wrap around the alternator and A/C compressor pulleys.
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Some parts are not legal for use in California or other states with similar laws / regulations
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