Brian,

What is the brand, model, year of the truck?

Is everything in the braking system original-style parts?

Have you adjusted the brakes (brake shoes)?

What procedure did you use for bleeding (is it as described in your Shop/Maintenance Manual)?

Tim
1954Advance-Design.com
1954 3106 Carryall Suburban
1954 3104 5-window pickup w/Hydra-Matic
The 216 and early 235 engines are not "splash oilers" -- this is a splash oiler.