Axle Ratio

[Rock]

Hello everyone I have an 84 F250. The code on the door says axle code 73 can someone tell me what gear ratio that is?

 

[jam0o0]

crawl under the truck. on the dif there should be a metal tag under one of the cover bolts. on that tag it will have 3.31, 3.55, 3.73, or 4.10 along with a bunch of other gibberish. if the tag is gone there could be anything in it.

 

[WrickM]

3.54 non-lsd. i believe

 

[Brianedwardss]

73 = Dana 3.54 std

 

[Diesel Max]

Hello everyone I have an 84 F250. The code on the door says axle code 73 can someone tell me what gear ratio that is?

Click on the link below for a list of Axle codes for our trucks ...

http://www.ford-trucks.com/article/idx/0/022/article/Ford_Axle_Code_Chart_.html

 

[jam0o0]

^than list doesn't have the right info. it says 73 is a d80 with 5.13 gears in '91.

 

[bike-maker]

IIRC factory rear end that came behind a diesel should have been a Dana 70. Only the gassers had Dana 60's.