For Ford enthusiasts that are serious about performance, the 85827 has all the same great features as the 8582, but with a Bronze Gear preinstalled. Just under the brass terminals of the MSD cap and rotor is an easy-to-adjust mechanical advance assembly. This assembly is fine blanked from Chromoly Steel, TIG-welded for strength, and receives a QPQ coating. The precision weights glide on nylon bushings for smooth advancement and different springs and stop bushings are supplied so a variety of advance curves can be tuned. The adjustable assembly allows you to accurately and easily modify the advance curve to match your specific application and can also be locked out for crank trigger systems. This combination provides stable timing signals and spark delivery at any rpm and triggering chores are handled by MSD's race-proven, maintenance-free magnetic pick-up.