What brakes on the truck? Disc drum, drum drum, orig huck or later bendix? Do you have separate residual pressure valves installed for each end? of appropriate pressure? Think it’s residual 10 psi for drums….2 psi for disc
I used a corvette manual brake master from 1970, 1” bore, on my 46 (huck)
Chuck

Last edited by Hanks custodian; 04/14/2022 8:09 PM.

Hank: 46 Chev 1/2ton shortbed
2023 Miata RF Club