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Wick · 05-12-2008, 05:15 AM

Dan,
My century has the 14L 470 detroit with the autoshift. At 75 mph we are turning 1550 rpm. we still get only around 7mph. running the twin screw effects it alot as well as turning that many rpms.
Wick

05-12-2008, 05:15 AM	#11
Wick Senior Member Join Date: Mar 2004 Posts: 182	Dan, My century has the 14L 470 detroit with the autoshift. At 75 mph we are turning 1550 rpm. we still get only around 7mph. running the twin screw effects it alot as well as turning that many rpms. Wick __________________ https://www.truckconversion.net/photopost....php?photo=743