Overview TSP's Pro Series Ready to Run Distributor is perfect for a street performance ignition upgrade. It features a CNC-machined billet aluminum body and hardened steel shaft, with a sealed ball bearing on top and a sintered steel bushing on the bottom. It also comes with a fully adjustable mechanical advance, vacuum advance, magnetic pickup trigger, and a high-output circuit board module with digital tach output. The dielectric cap comes with solid brass terminals and a color-matched wire retainer. Fully Adjustable Mechanical Advance An important feature on all Top Street Performance Pro Series distributors is the fully adjustable mechanical advance. This allows you to easily modify the distributor to achieve a variety of timing curves. Included with all Pro Series distributors are four bushings of varied size. The bushing determines the mechanical advance the distributor can achieve. Also included are six springs, with two at each level of tension. The springs control the rate at which the distributor reaches the advance. High-Output Circuit Board Module What separates a Ready to Run from a Pro Billet is the top-of-the-line internal ignition module. Built using the latest circuit board technology, this module eliminates the need for external ignition control, such as a CDI box. It also comes with a digital tachometer output. Specifications TRIGGER STYLECircuit Board Module with Magnetic Pick-up ADVANCE TYPEMechanical and Vacuum CAP STYLEMale MECHANICAL TACH DRIVENo SLIP COLLARNo COIL INCLUDEDNo COIL TYPEExternal RECOMMENDED COIL OUTPUT35,000+ Volts GEAR MATERIALSteel HOUSING MATERIALMachined Aluminum IGNITION BOX REQUIREDNo MARINE USENo CYLINDERS8 CHEVROLET SMALL BLOCK V8 GEN. I 4.3 L / 262 in3 4.3 L / 265 in3 4.4 L / 267 in3 4.6 L / 283 in3 4.9 L / 302 in3 5.0 L / 305 in3 5.4 L / 327 in3 5.7 L / 350 in3 6.6 L / 400 in3 CHEVROLET BIG BLOCK V8 GEN. II (MARK IV) 6.5 L / 396 in3 6.6 L / 402 in3 7.4 L / 454 in3