Magnum Double Row Timing Chain Kit Set '65-'91 BBC 396 454 Big Block Chevy Gear Set

COMP Cams Magnum Double Roller Timing Sets - Street Series. 

Building a really high performance street vehicle? COMP Cams Magnum double roller timing sets are built for maximum performance on the street. They have heat-treated, pre-stretched, large-pin, double-row chains for extra strength and reliability. They also have an induction hardened cast iron camshaft gear and billet steel crank sprocket with three keyways, which allow you to set cam timing at 4 degrees advanced, 4 degrees retarded, or normal. In addition, all COMP Cams Magnum double roller timing sets are dynamically balanced for smoother operation.

Comp Cams has 4 Levels of Timing Chain sets: 

HI Energy -Standard

Magnum - Street Series

Hi Tech - Premium - Street/Race Series

Billet - Premium - Race Series