The Stovebolt Site Forums The Parking Lot Big Bolts Replace hydrovac with late model brake set up?

My guess is NO it won't work.

The MC bore is not the same for 1 ton and 2 ton trucks. The bigger trucks have larger wheel cylinders that require more fluid to engage the brake shoes. If you use a small MC the pedal will be on the floor before the shoes hit the drums.

Mike B