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Discussion Starter #1
I have an 88 fsb with a 351, 3 speed auto trans. How do i find out which trans, t-case, and diff's i have in it. I believe everything is stock. Also, what gears would i have in it??

also, what grade of gas should i use to get the best gas maileage/ performance etc?

Thanks.
 

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ASSSSS-HOOOOOLE
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Charlie don't surf..
'92 Ford Bronco XLT
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I would guess you have and AOD tranny, and your t-case is probably a B/W 13-56, there is a metal tag on it, if you get under your truck and look at the back of the t-case you'll see 13-56 on there.
 

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Rest in Peace Friend...
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jermil01 said:
I would guess you have and AOD tranny, and your t-case is probably a B/W 13-56, there is a metal tag on it, if you get under your truck and look at the back of the t-case you'll see 13-56 on there.
You can get the transmission code and axle code off the safety compliance sticker on the driver side rear door post also.

:thumbup
 

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FSB warrior
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You have a C6, D44 and 8.8, look on the tag attached to the diff cover bolt
3L50 means 3.50:1 ratio with a Limited slip, 3 50 is open, if you cant find a tag then look on the door jam and see the axle code, search here and get your answer.
 
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