There are 3 diff ratios in a w40 4.2 civilian bus 6.5-6.143-5.87 yes they are hard to get, I have been after a 5.87 for 2yrs
Its easy. I have a high speed diff centre that fits straight into a civilian. The ratio is 4.875, it will really make the bus cruise without revving its guts out! For info email pama101@bigpond.com
depends upon the truck, diffrent ratio's were used
Rear diff is 1.75 qts of 75w90 or 75w140
yes 93-97 as long as there is not a difference in abs or limited slip diff
Can be found in service manual, possibly at library or at parts store.
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the tab should be on the diff
Same as the rear.
The S806A differential tag is coded to a 1984-1986 Ford Bronco. You seem to be missing a digit at the beginning of he second line. It should read 308 88 6C03. This diff. has a 3.08 non-locked (non-posi) ratio. If it was a locked diff. it would have an L in it (3L08). The 6C03 is the plant code where the diff. was built. So your ratio is 3.06, possibly swapped from a bronco, or built near the end of production with a leftover bronco diff. SOURCE: www.fordifiation.com
4.3 L engine, aprox 16 to 19 mpg depending on diff gear ratio. 2.2 L engine, aprox 26 to 29 depending on diff gear ratio and standard or automatic transmission.
It would have 3.73 gears in it
The HOUSINGS are the same, But the gear ratio is probley different.