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1994.5 to 1997 Powerstroke("F" Series) max loaded rpm 3300 rpm; rated rpm, 3000. Unloaded: 3400 - 3500 rpm.

1999 - 2001 ( There was no 1998 "F" series Powerstroke )loaded: 3000; rated rpm, 2700. Unl... Login to read more.