SBC Engines Harmonic Balancer Bolt Kit & Pulley Bolt Kit Compatible with Big Block Chevy 396 454

Product Details

• Block Damper Designed specifically for big block Chevy
• SBC Balancer Bolt Harmonic Chevy 396 454 Big Block Damper
• Harmonic Balancer Bolt High hex head prevents socket slippage when adjusting valves or rotating the engine to degree in a cam
• Enhance Performance, High Reliability
• 1/2" - 20 Threads 1-1/2" Under Head Length 1/4" Thick Washer 3/4" Hex Head

Specifications:GRADE 8 HARMONIC BALANCER BOLT1/2" - 20 Threads1-1/2" Under Head Length1/4" Thick WasherLock Washer3/4" Hex HeadFits:Big Block Chevy 366 454 EnginesMay Not Fit With Aluminum Pulleys , Check Dimensions !