Chevy used vacuum al the way through 59. 58-59 elec are a unique motor specific to those years and they use different wiper transmission arms under the dash as well. I believe 55.2-57 vacuum and elec use the same arms. Sorry, but I don't know on the earlier ones.


Mike
1955 Chevy 6400 ex-flatbed (no bed now!) sold September 2023
In the Stovebolt Gallery
1958 Chevy 6400 flatbed W/dump
In the Stovebolt Gallery
1959 Chevy Suburban Owned for almost 20 years, Daily Driver -- sold May 2016
In the Stovebolt Gallery

Sufficient unto the day is the evil thereof