The Aerospace AC-MS-BBC Mandrel Drive Kit for Big Block Chevy Engines is a high-quality kit that features billet aluminum construction. It mounts to the stock harmonic balancer bolt holes and supports up to 5 pulleys. The kit includes a fixed position 5 in. pulley for alternators and an adjustable 3 in. pulley to drive vacuum pumps. The pulley shaft has a diameter of 1 1/2 in. Grade 8 hardware is included, and there are many other pulleys to choose from.

FAQ

What is a crank mandrel drive?

• Crank Mandrels are a popular way to mount industry-standard crankshaft pulleys on racing engines. The mandrel allows easy pulley spacing alignment and allows for accessories such as vacuum pumps and alternators.