Casting 441 Ported Head TRUE Three Angle Valve Job 9.

Three Angle Valve Job done RIGHT!!! while lapping is still used as an indicator of roundness, nothing beats the Valve Seat Concentric Gauge, which I use on all HP valve jobs at no more than .0012 seat runnout ( I always try for less than .001). http://www.headbytes.com or call 615-212-7168

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• #three_angle_valve_job
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• #porting_casting_441_valve_job