COMP Cams 7101 Keyway Adjustable Billet Timing Set for Big Block Chevy Gen VI<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Induction hardened and precision machined steel billet gears for bullet proof durability</li><li>Feature 9 keyway crank sprocket for 2-degree incremental adjustability， 8-degree maximum advance/retard</li><li>Pre-stretched， heat-treated double roller timing chain with heavy-duty large pin design</li><li>Includes Torrington roller thrust bearing for reduced friction</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41m0B6DdEwL.jpg" noproxy>