Pertronix flamethrower Slant six

The biggest performance, drivability and mileage increase I ever got with my Slant 6 was from increasing the initial timing and welding up the slots a bit in the mechanical advance mechanism in the distributor to reduce the total amount of advance. I had Doug Dutra build the motor using the smaller of the two cams he spec'd.

With some experimentation, I found my motor ran best with 22 degrees initial and 32 total. I also hooked the vacuum advance to manifold vacuum, so it would retard dependent on when the throttle was opened.

It made a night and day difference, and was virtually free.