Chevy BBC 454 Dual Idler Noisey Timing Gear Drive Set so it is not necessary

so it is not necessary to change to a 10 degree retainer

Four corner water ports

Ideally suited for use with Solid / Mechanical flat tappet and Hydraulic Roller Cams

CE Ford front covers are direct replacements for your stock timing chain cover

Speedmaster aluminum timing covers are the perfect way to add strength and durability to the front of your engine

Chevy BBC 454 Dual Idler Noisey Timing Gear Drive Set so it is not necessarySpeedmaster gear drives are great for you folks who want better timing. Their dual idler design has CNC machined components and they are easy to install. These drives fit under your stock timing cover and come complete with instructions. Minor machining may be required on some applications.