Chevy BBC 454 Dual Idler Noisey Timing Gear Drive Set Designed for engines producing up

Designed for engines producing up to 500hp

100635 Spline Oversize Pinion Bearings:PCE207

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

These kits are specifically designed to deliver the performance you want

Featuring a low profile design and a high flow runner design these manifolds will improve performance from 1500-6500 RPM range

Chevy BBC 454 Dual Idler Noisey Timing Gear Drive Set Designed for engines producing upSpeedmaster 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.