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post #1 of 2 (permalink) Old 04-04-03, 04:27 PM Thread Starter
shaynet's Avatar
Join Date: Apr 2002
Location: Gosford NSW Australia
Age: 64
Posts: 888
confused 9" Diff Query

Does anyone know if the axles/centre in a F100 9" diff are likely to be 28 spline or 31 spline?

Actually, the diffs from an F100 ambulance and is a drum brake model.

Also, any clues as to what ratio its likely to be?

The cop said "Do you know why I pulled you over". I said " Well, that all depends on how long you have been following me!"
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post #2 of 2 (permalink) Old 04-04-03, 07:23 PM
74 XB Fairmont
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Join Date: Sep 2001
Location: Cranbourne, Vic
Posts: 5,113
If I remeber correctly? 31 spline.

Still doesn't stop you getting a cheap 31 spline diff and changing the spider gears or shortening axles to suit.

Generally around 3.5-3.7. 4.11's can be found also.

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