Page 174 of GM Performance Parts 2006 Catalog by GM Parts Direct

NOTE: NOTE: Roller Timing Chain Kit A LT4 Front Cover Plug C Camshaft Bolt B 172 NOTE: TIMING CHAIN SPROCKETS The timing chain is the vital link for engine timing between the crankshaft and camshaft. GM Performance Parts timing chains and sprockets deliver strength and accuracy for many miles of dependable service. A. 12341093 Roller Timing Chain Kit Heavy-duty double-roller timing chain kit used by top racing teams. Kit incudes roller chain P/N 3735411, steel crank sprocket P/N 3735413, and iron cam sprocket P/N 3735412. Cannot be used with 1987-and-newer engines with hydraulic roller camshaft. 12371043 Single Roller Timing Chain Kit Performance single-roller timing chain kit for all 1987-andnewer engines with roller lifter camshaft, except LT1 and LT4. Kit includes chain P/N 14088783, crank sprocket P/N 14088784, cam sprocket P/N 12552129, retainers and bolts. Will not work with flat tappet camshafts or LT1 and LT4 engines. 12370835 Extreme-Duty Timing Chain Kit, LT1 LT4 engines Performance upgrade, extreme-duty timing chain kit for 1995-and-newer LT1 and LT4 engines. Kit includes timing chain P/N 14088783, crankshaft sprocket P/N 14088784, camshaft sprocket P/N 10214880, and water pump gear P/N 12551728. Use with pin drive camshaft only. To convert 1993 and 1994 engines, use camshaft P/N 12551705, distributor P/N 1104032, timing cover P/N 12552426, vacuum harness P/N 12555323, and vacuum fitting P/N 14082470. 14088783 Roller Timing Chain Heavy-duty, single-roller chain for ZZ-design 350 HO engine. Use with crank sprocket P/N 14088784 and cam sprocket P/N 12552129. 14088784 Crankshaft Sprocket Single-roller-type for ZZ-design 350 HO engine. 12552129 Camshaft Sprocket Single-roller-type for ZZ-design 350 HO engine. B. 9424877 Camshaft Bolt 5/16-18 x 0.75" bolt. 12555886 LT4 Crankshaft Sprocket For all LT4 engines. 12555885 LT4 Camshaft Sprocket For all LT4 engines. 12554553 Camshaft Dowel Pin 12555887 LT4 Timing Chain Quiet, roller design for all LT4 engines. Use with crank sprocket P/N 12555886 and cam sprocket P/N 12555885. C. 12367600 LT4 Front Cover Plug Covers hole on front cover of 1996 LT4 engine when original distributor is removed and replaced with rearmounted distributor. CHEVY SMALL-BLOCK V-8

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