Your 460 has 2 flat belts.
Rear belt goes from crankshaft to Power steering pump, to AC compressor, under tensioner, to water pump and back to crankshaft.
Front belt goes from crankshaft to water pump, to alternator, to smog pump and back to crankshaft.
Your squeal is most likely from the front belt. It is tensioned by adjusting the alternator.
While on the subject of F53 460s
Your 2 radiator hoses only fit a 460 MH and Motorcraft is the only supplier/manufacture. While some parts books show other brand names, they won't fit. Carry spares.
Lower hose....MOTORCRAFT KM4969
Upper hose....Motorcraft KM4941
Richard
