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78 Ford LN800 Brakes

Discussion in 'General Discussion' started by ColLonewolf, Apr 5, 2021.

  1. ColLonewolf

    ColLonewolf Registered User

    Likes Received:
    Aug 27, 2008
    Eustis, Fl
    Posted this in the wrong section initially. Looking at a 78 Ford LN800 with the 429 and auto trans. Seller says it is having brake issues and thinks it is the vacuum pump. Has air assist brakes. Brakes work at lower RPM but at speed does not maintain pressure. Thought the vacuum came from the engine and not a pump but then I am not yet up on this sort of rig. Will likely be looking at a diesel swap and perhaps a manual tranny later but for now have to get it home. Any insight would be greatly appreciated. Thanks.

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