MustangWorks.com : Ford Forums - View Single Post - 2.80's--4.11's gas milage?

Rev · 08-06-2002, 05:09 PM

Going from 2.80 to 4.11 will give you less mileage and will spin your engine pretty tight on the highway. My 3.25's with a C-4 turn the engine at 3000 RPM @ 70 MPH (235/60/15's). 4.11's would turn in my car at almost 3800 RPM @ 70 MPH. 2.80's would turn about 2600 RPM @ 70 MPH in my car.

Rev

08-06-2002, 05:09 PM	#3
Rev Registered Member Join Date: Nov 1998 Location: Houston, Tx. Posts: 3,887	Less Going from 2.80 to 4.11 will give you less mileage and will spin your engine pretty tight on the highway. My 3.25's with a C-4 turn the engine at 3000 RPM @ 70 MPH (235/60/15's). 4.11's would turn in my car at almost 3800 RPM @ 70 MPH. 2.80's would turn about 2600 RPM @ 70 MPH in my car. Rev __________________ '66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi. O.B.C. #2 '66 coupe Last edited by Rev; 08-06-2002 at 05:29 PM..