ROLLMASTER 3 BOLT CAM TIMING CHAIN KIT TO SUIT HSV LS3 LS7 6.2L 7.0L V8The Rollmaster Red series timing chain kit is manufactured to exacting standards using billet steel for both the crank and camshaft sprockets. This kit comes with 9 keyway crankshaft sprocket to allow more adjustment for dialling in the cam. Crankshaft sprocket keyways are in 2 degree increments always unless otherwise stated. The relationship from crank keyway to camshaft sprocket timing is 2: 1 meaning that the amount of advance or retard at the