I had a '78 35' with the 555. It ran great...My mechanic "turned it up" a bit. I didnt notice much difference. The only time it seemed underpowered was in the hills. It would run 70mph all day long on the flat. If it blew up I would have considered a Duramax engine/trans. That would not require a radiator move or final drive change.
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1993 Newell 45'#316, 1976 Trans Am 455, 1967 GTO, 1953 Chevrolet 3105 (panel truck),1952 Chevrolet 3600,1969 Airstream Overlander. Always fixing something!
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