Chevy BBC 454 Dual Idler Noisey Timing Gear Drive Set They weigh only 2

They weigh only 2

Failure or poor performance from a coil can result in a misfire

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Chevy BBC 454 Dual Idler Noisey Timing Gear Drive Set They weigh only 2Speedmaster 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.