Reply To: Help me understand the ‘33 front end

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I understand that Rolls-Royce used it. It is a more expensive unit to manufacture than a more typical vacuum booster unit. In ’36 Pierce went to a vacuum booster. If I remember correctly it was because the new overdrive unit added didn’t leave room for the S-W unit anymore. The whole transmission, freewheel, and S-W brake unit makes for a pretty long assembly.