I have not been able to find either a Parker or Muncie assembly that has a gear for the SM420. You'll likely have to find a used one somewhere. I have one for the CH465 but don't know for sure if the gear is the same. As I recall they are different so no help there either. I used to keep both of them in stock all the time when I had the equipment business but that was in the 70's. I'm going to a convention in a couple of weeks and will get the info from both Muncie and Parker/Chelsea.


1953 Chevy 5-window 3100
In the Stovebolt Gallery
More pix on Picturetrail

Dave
Engine & Driveline Moderator

If you can't make seventy by an easy road, don't go. ~~ Mark Twain