Chevy Small block V8
BALANCERS & PULLEYS A smooth running engine depends on an effective balancer or torsional damper. A GM Performance Parts damper not only helps your engine run smoothly, it can extend the life of the engine. 3858533
Crankshaft Pulley, 6-5/8" (not shown)
• Two-groove, high-rpm, 6-5/8" pulley
• For engines with short water pump Can be used with water pump pulley P/N 3770245 and belt P/N 9433722 without an idler pulley or alternator.
3815933
Crankshaft Bolt (not shown)
• Positive retention 7/16-20 x 2-1/4" bolt for engines with tapped crank snouts
• Use with washer P/N 14001829 14001829
Washer (not shown)
• 1-3/4" x 1/2" x 5/16" thick washer for crankshaft bolt
SMALL- BLOCK BALANCERS  Part Engine Outside Technical Notes Number Application Diameter
12551537 1969–up 305 and 350; 90 V-6 competition 6.75" Smaller size for limited clearance. Timing mark is 10 degrees before keyway centerline. Use with timing pointer P/N 3991435.
3817173 1962–68 302 and 327 8" Cast iron. Inertia ring is 1-11/16" wide; timing mark is 2 degrees before keyway centerline. Do not use pointer P/N 3991436 unless TDC mark is adjusted.
88960604 1970–74 350; ZZ4 crate engine 8" Cast iron. Inertia ring is 1-11/16" wide. Use with timing pointer P/N 3991436.
12498008 383 crate engine with 1-piece crank seal 8" Use with 383 engine components and crankshaft P/N 12489436.
6272225 400 cu in 8" Counterweighted damper for externally balanced crankshaft. Requires flexplate P/N 471578. Timing mark is 10 degrees before keyway centerline. Use with timing pointer P/N 3991436.
364709
All racing 8" Heavy-duty nodular iron. Use with competition engines where a production-style balancer is required. Use with timing pointer P/N 3991436. Refer to Chevy Power manual for damper prep procedure.
24502534 All racing 7.074" NASCAR-approved and specially tuned up to 9000 rpm. Uses standard crank hub diameter. Accepts standard pulleys.
24502535 All racing 7.074" NASCAR-approved and specially tuned. Use with large-diameter 1.598" crankshaft hub.
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