Chevy Small block V8
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
• Includes 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 (not shown)
• Performance kit for all 1987-and-newer engines with roller lifter camshaft, except LT1 and LT4
• 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 (not shown)
• Performance upgrade, extreme-duty timing chain kit for 1995-and-newer LT1 and LT4 engines
• 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 (not shown)
• 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 (not shown)
• Single- roller- type for ZZ-design 350 HO engine 12552129
Camshaft Sprocket (not shown)
• Single-roller- type for ZZ-design 350 HO engine B. 9424877
Camshaft Bolt
• 5/16-18 x 0.75" bolt 12555886
LT4 Crankshaft Sprocket (not shown)
• For all LT4 engines 12555885
LT4 Camshaft Sprocket (not shown)
• For all LT4 engines
12554553
Camshaft Dowel Pin (not shown) 12555887
LT4 Timing Chain (not shown)
• 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 | 
