ROLLMASTER TIMING CHAIN KIT TO SUIT HSV LS VP BUICK L27 3.8L V6The 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 a 7 key way crankshaft sprocket to allow for more adjustment when dialling in the cam. Crankshaft sprocket key ways are always in 2 degree increments unless otherwise stated. The relationship from crank key way to camshaft sprocket timing is 2: 1 meaning that the amount of advance or retard