Overdrive Crank Pulley
2005 & Newer Mustang 3V with Supercharger, and Select Modular Ford Applications from 1996-2010
6 and 8-Rib Belt
Note Regarding Availability: The harmonic balancers these pulley assemblies are based on are currently unavailable from Ford. We will get more, but no estimated delivery date is available at this time.
This overdrive crank pulley assembly is designed for 3V Mustangs equipped with an aftermarket supercharger. The pulley is oversized (approximately 12%) to provide additional blower speed while avoiding the belt slippage issues associated with smaller supercharger pulleys. We have found that this balancer assembly will fit most 2V, 3V, and 4V applications up to the model year 2010.
The assembly is based on a brand new, OEM Ford harmonic balancer, purchased directly from our local Ford dealership. The balancer is precision-machined on a state-of-the-art CNC lathe at our shop to accept the 7.55" billet overdrive pulley ring. The two components are fastened together using six silver-zinc plated Grade 8 bolts. Great care is taken to ensure exact belt alignment.
This pulley assembly installs as a direct replacement for the factory component, and is compatible with both 6 and 8-rib drive belts. A longer supercharger belt and additional tuning may be required. In most applications, there will be a gain of 2-4 lbs of boost.
The original balancer bolt is a torque-to-yield fastener, and while it can be useful to pull the new balancer onto the crankshaft, it should not be re-installed. A new Ford balancer bolt and hardened washer is available as an option when purchasing this balancer (see below).
Note: While this balancer assembly was designed for the 2005-2010 3V application, we have found that it also fits most 2V and 4V applications using the same drive belt for the accessories and the supercharger. In some applications, minor grinding of the crank sensor bracket is necessary for clearance. Please contact us if you have questions.