Re: Pick-Up Truck Rear End Gear Ratios

Posted by Gerald J. on April 15, 2009 at 08:47:27 from (4.254.70.102):

In Reply to: Re: Pick-Up Truck Rear End Gear Ratios posted by John B. on April 15, 2009 at 05:57:00:

Yes, the fault is in the transmission, but there is no available alternative transmission that is better, so I sacrificed overdrive to get a granny gear and while it probably causes more engine wear, it didn't change the gas mileage at reasonable (< 75 mph) speeds. An auxiliary under drive transmission does exist, and costs 4 times the price of a rear axle gear change (not 4X4) before installation.

Mine had an 18 tooth speedometer sensor drive gear and I found a 23 tooth from a Mustang hot rod shop that corrected the speedometer. Since late in the 1998 production year, that correction can be done at the computer, so no gear change is needed.

Gerald J.

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