Super six timing

My Super Six loved a lot of initial(18 to 20*), but I did weld the plate to limit the total to 28 or 30*. I also used tuned the vacuum advance to use manifold vacuum, which advanced it even more at idle and part throttle. It drops to no vacuum advance on heavy throttle to keep it from pinging and advances it more at cruise and part throttle for more performance and economy.

Some people will argue with this, but most never limit the mechanical advance to work with the high initial timing, and have never done a back to back comparison. My Slant ran better than any other Slant I came across in over 10 years.