Belt Pulley Kit: Optimize Your Chevy Engine's Performance Elevate your Chevy engine's efficiency and reliability with our premium Belt Pulley Kit. Designed for specific small block engines, this kit ensures optimal performance and durability, making it an essential upgrade for your vehicle. Compatibility: This belt pulley kit is a perfect replacement for Chevy small block engines including 283, 305, 307, 327, 350, and 400. Please note, it is not compatible with air conditioner compressors, ensuring focused performance. Belt Size: Featuring a cogged belt with a width of 1.5 inches and a length of 40.5 inches, this kit effectively prevents slipping during operation, providing a smooth and easy driving experience. 1:1 Ratio: The pump is designed with a 1:1 ratio to the crankshaft pulley, compatible with long water pumps (not included) that have up to a 5/8-inch center shaft, ensuring balanced and efficient operation. Excellent Performance: The uniquely designed outer lip of the AC pulley keeps the belt perfectly aligned, while the grooves in the crank pulleys V belt effectively run power steering, enhancing your vehicles overall functionality. Durable Material: Crafted from high-quality aluminum alloy and rubber, this belt pulley kit is built to withstand extreme temperature changes, offering reliable durability and long-term performance. Upgrade your Chevy engine with our Belt Pulley Kit. Order now to enjoy enhanced performance, precise engineering, and robust durability, ensuring your vehicle operates at its best under all conditions.