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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Jan 2016 Posts: 4 New Guy | | New Guy Joined: Jan 2016 Posts: 4 | 2 speed vacuum switch to 12 volt electric
I remember someone telling me in a post at least a year ago how to switch my vacuum switch on a C- 60 with 2 speed axle to a 12 volt switch. He had the part #'s for the switch that mounts on the frame and the gear shift switch. Can't find it in the old post.im old and can't hear the air leaks anywhere but that has to be my problem. A vacuum leak. Tired of trying to fix the vacuum leak. Want to switch to 12 volt switch to air actuator. Thanks for any help. The old 1963 hauls my grain every fall and it works much better when the 2 speed axle works. | | | | | Joined: Oct 2013 Posts: 331 Shop Shark | | Shop Shark Joined: Oct 2013 Posts: 331 | This would be pretty easy to do using 3 port egr vacuum solenoid off of a late model engine (pick your brand). Switch 12v to the solenoid then plumb manifold vacuum to the common port on the solenoid, plumb the other two ports accordingly to your vacuum servo.
1950 4100 - unrestored and driven weekly for almost no reason at all.
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