COMP Cams 4120 - Hi-Tech Gear Drive System, for D SB

COMP Cams Big Block Chevy Gear Drive System has precision machined, heat-treated billet steel gears for timing accuracy and durability. Its unique design eliminates timing movement throughout the rpm range. It is ideal for street performance applications that desire that distinctive whining blower sound.

Precision machined, heat-treated billet steel gears for timing accuracy and durability; Unique design eliminates timing movement throughout the rpm range; Ideal for street performance applications that desire a whining blower sound; For Small Block Ford Applications;