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Fits big block Chevy rectangular port cylinder heads on standard deck blocks
They distribute the ever-increasing valve spring loads over the retainer better than typical 7 degree locks by reducing the chance of "pull-through" failure
filter changes will be quick and easy
They're precision-machined for optimum thread engagement and have a wide-area flange for better load distribution
Gain 25-35hp with this direct replacement
Cdi Ignition 8000-8800 Rpm 5 Pill Module Set Fits big block Chevy rectangularTune your rpm activated control to your application with one of these Speedmaster rpm module kits. The kits include five modules in 200 rpm increments.
