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Old 12-02-2014, 03:30 PM   #4
Cabnchassis
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Join Date: Mar 2014
Location: Redwood City
Posts: 242
Re: 87 700r4 trans shifts up and down alot

The national speed limit was supposed to be 55 basically during the years of the square body. It was changed in 74 and then changed back in the late 80s so that gearing probably drove just right for the time. That is if it was in one of the dozen or so states that actually cared to comply with the law. If you don't know your rear gear ratio it'll be on the paper in the glove box if you can still read it or it's even still there.
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1991 R3500 3+3 C+C 6.2/4l80e/14ff Fleetside Dually
1992 K2500 ECLB 5.7/4l80e/14sf(g80) 8600gvwr
1991 CR500 (95 Burb wouldn't stop catching fire )
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