*Keyway Adjustable Billet Timing Sets* * Induction hardened and precision machined, steel billet gears for bullet proof durability * Features 9 keyway crank sprocket for 2-degree incremental adjustability, 8-degree maximum advance/retard * Pre-stretched, heat-treated double roller chain w/ heavy-duty large pin design * Includes Torrington roller thrust bearing for reduced friction * Ideal for all street performance and race applications PartNumber : cca7138-10 Description : Nine Key Way Billet Timing Set Title : 7138-10 Billet Timing Set,-.010 FS 9-Keyway California Proposition 65 : WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov Camshaft Gear Material : Billet Steel Chain Type : Double Roller Crankshaft Gear Material : Billet Steel Engine Family : Ford 289-351W (1965-1988) Maximum Advance : 8 Maximum Retard : 8 Number of Crankshaft Keyways : 9 Timing Set Series : Keyway Adjustable Billet Engine Components::Timing Chains