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dieselcruiserhead · 05-07-07, 02:56 PM

Gifu is still right about that in my opinion. You will get best mileage gearing for about 1800 rpms cruising highway.. I would say leave the 3.73s, I am in the same boat, wish there were 3.73s for my 80 axles as well...

05-07-07, 02:56 PM	#21
dieselcruiserhead IH8MUD Lifer Join Date: Jan 2003 Location: Park City & Heber City, Utah TLCA# 9439 Posts: 2,243	Gifu is still right about that in my opinion. You will get best mileage gearing for about 1800 rpms cruising highway.. I would say leave the 3.73s, I am in the same boat, wish there were 3.73s for my 80 axles as well... __________________ - Cummins 4BTswaps.com Forums - Diesel Conversion Website TLCA# 9439 Since 1999, Wasatch Cruisers '89 Toyota Pickup V6, OME, 32's '69 FJ55 Project on locked FZJ80 Frame, Cummins 4BT, NV5600, Dana 300