Not one of you guys had a 440????? Geez I remember our 1976 Class C motorhome on the old 1-ton dually chasis from Dodge. The person that had it before my dad put a true dual exhaust on the thing and it sounded like a race car. It would actually light them up if dad got too ******* the go pedal.
Bad thing was the 440 was a HOT engine and it would boil the gas in the line and cook ballast resistors. Dad always kept 3 or 4 ballast resistors in the motorhome and got good and changing them quickly. The climb up to Flagstaff was where my dad learned that clothes pins on the fuel line near the engine helped dissipate heat enough to keep it from vapor locking. I also remember the Fan Clutch seizing up somewhere just west of a little town called Moose Jaw in Canada.
That old 440 pulled like a freight train. But man we remember trips in that rig by where we broke down.