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RPM at 70mph

My '95 3L MTX with Zetec final drive is only a little better than the stock #'s. I also have 18" wheels with a 35 series tire which also fluctuates the actual numbers.

70mph = 2750-2800 rpm
75mph = 3000 rpm
 
Big Jim said:
As someone else posted, you are somewhat limited. There are two final drive ratios, the 4.06 on the V6 (including SVT) and 3.82 (I think, might be 3.84) for the 4 cylinder. They are somewhat interchangeable, with the taller gears often being used with a 3 liter swap. I say somewhat, because I understand there are some limitations between the various years. Terry Haines is the expert on this topic. You may want to contact him. He is a former Ford engineer and was involved with the Mondeo launch. Today he owns a motorsprts shop in Michigan. He doesn't post here, but if you search around you can find his contact information.
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another person to contact would be livinsvt
 
I get about 3100 at 70 with 215 60 15's but I dont know if the spedo lies
 
Yeah, it does seem to rev on the high side at cruise, but its a cammer motor, meant to wind. Plus, the semi-lofty revs keep you in the heart of the powerband.

My 1989 Supercharged Cougar would loaf along at about 2,000 RPM at 80. Of course, that thing made 315 lb-ft of torque at 2,400 RPM, so if you put your foot to the wood, even in fifth gear, the car was gone. :cool:
 
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