Double Roller 9 Keyway Billet Steel Timing Chain Kit For Ford 429 460 (Tor/Brg) Ford 429 460 Double Roller 9 Keyway Billet Steel Timing Chain Kit (Tor/Brg) Maximum Advance/Retard at Camshaft: 4 degree Maximum Advance/Retard at Crankshaft: 8 degree Material:Billet steel.Thrust Bearing Included.