Competition Cams 4797 Crankshaft Socket for Big Block Chevrolet
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<b>[Product Information]</b><br>
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<li>For Chevrolet Big Block</li>
<li>1.610 inch ID with 3/16 inch Keyway</li>
<li>Specially designed 1/2 inch drive socket allows rotation of engine assembly</li>
<li>Knurled retaining nut that holds degree wheel in place</li>
<li>Can be loosened while on crank snout so that wheel can be turned independent of the engine when finding TDC</li>
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