Crankshaft Key Chevy Long

The Crankshaft Key Chevy Long is a precision-engineered Woodruff key designed specifically for Chevy V8 engines requiring secure crankshaft-to-pulley synchronization. This critical component prevents rotational slippage between the crankshaft and accessory drive pulleys, ensuring proper belt alignment and engine timing accuracy. For engine builders, machine shops, and performance enthusiasts restoring or building small-block and big-block Chevy V8s, a quality crankshaft key is non-negotiable for reliable operation and longevity.

Manufactured by ALLSTAR PERFORMANCE, this long-format Woodruff key measures 3/16 x 1-3/8 inches and is machined from steel with a natural finish for corrosion resistance and durability. The Woodruff design—featuring a rounded underside that seats into a complementary keyway groove—distributes load evenly and reduces stress concentration compared to flat keys. Weighing just 0.04 lbs, the compact yet robust construction ensures dependable holding power under the rotational forces and thermal cycling inherent to V8 engine operation.

This Chevy Long crankshaft key is essential for anyone rebuilding a classic or performance Chevy V8 engine, whether for street, strip, or show applications. During engine reassembly, the key is installed into the crankshaft keyway before mounting the balancer, harmonic damper, or serpentine pulley system. Proper installation prevents pulley wobble, vibration, and potential timing errors that could compromise ignition and fuel delivery. Verify keyway dimensions and engine block specifications before purchase to ensure compatibility with your specific Chevy V8 platform.