Chevy GM LS1 LS3 LS7 Super Timing Gear Drive Set So can features such as

So can features such as full ball-bearing construction

and durable

These can be used on std or aftermarket plenum manifolds

Couple this Hi-Ram intake with the high flowing LS1 style cylinder heads has outstanding potential for naturally aspirated and forced induction applications

The successful formula of offering a complete engine drive accessory kit has now been applied to the Serpentine with Speedmaster pulley systems

Chevy GM LS1 LS3 LS7 Super Timing Gear Drive Set So can features such asSpeedmaster 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.