ROLLMASTER CS1000 - Timing Chain Chevy Small Block 262/400 Pre/EFI Red Series with shim & non-nitrided sprockets, single keyway crank sprocketSmall Block Chevy 262 400 Pre EFI Red Series with shim, nitrided sprockets & single keyway crank sprocket Red Label Premium and Gold Label Extra Premium Timing Sets: All Red Label timing sets are produced using billet steel for both the crank and camshaft sprockets. The grades of materials used are mentioned further down this page. Gold Label sets are nitride hardened and include a one piece Torrington and Iwis chain. Red label sets come with 7 or 9