Crank Hub Timing Degree Ring

The Crank Hub Timing Degree Ring by Blower Drive Service (model CH-3199) is a precision aluminum timing wheel designed for engine builders, performance tuners, and automotive technicians who require accurate top-dead-center (TDC) identification during crankshaft and ignition timing work. This 7-inch diameter degree wheel is the industry standard for synchronizing cam timing, measuring ignition advance, and verifying piston position in engine assembly and blueprint operations.

Constructed from lightweight aluminum with a black anodized finish, the ring provides excellent corrosion resistance and readability in the workshop environment. The 7.25-inch outer diameter accommodates a wide range of crank bolt patterns, while the precision-stamped degree markings—printed in 2-degree increments from 0° to 360°—enable repeatable measurements essential for high-performance engine work. The thin 0.25-inch profile minimizes interference with engine bay components during installation and measurement, and the anodized surface resists oxidation and maintains clarity through repeated use.

This timing degree ring is critical for engine builders working on naturally aspirated and boosted platforms, particularly when correlating cam timing to dyno-verified power delivery, validating OEM baseline specifications, or documenting custom timing curves for engine control tuning. It is equally essential for transmission builders and swap specialists who must verify crankshaft orientation relative to accessory drive geometry. Users installing aftermarket cam profiles, dual-carb manifolds, or fuel injection systems rely on the CH-3199 to confirm mechanical timing matches their target ignition map.

Blower Drive Service has manufactured timing equipment and supercharger components for serious engine shops since the 1970s, and this degree wheel reflects that heritage. The CH-3199 is compatible with standard harmonic balancer bolt circles and works across domestic and imported platforms where TDC measurement and crankshaft documentation are required. At 0.31 lbs, it is shop-friendly for frequent repositioning and storage between projects.