what axle do i have?
Thread Starter
|
Junior User
Joined: Sep 2003
Posts: 59
Likes: 0
what axle do i have?
i have a 1978 f-100 2wd standard cab short bed. i was wondreing how i would go about finding out which axle i had and they gear ratio. the tag is no longer there so i have no idea what to do. i now i can use the vin to find it out but i dont know where to look for the vin break down any help would be great thanks
Senior User
Joined: Jul 2001
Posts: 345
Likes: 0
From: Fort Worth, TX
what axle do i have?
well for the axle it should be a ford 9 inch, it's really easy to notice because it doesn't have a diff cover instead the back of it is solid and it has a third member that holds the gears.
As for the gears its possible on an older truck that the gears might have been changed anyway so the VIN might not tell you anything. Here's a calculator somebody showed me that will tell you the gears...as long as you know everything else: speed, rpms, tranny gear, tire diameter.
http://www.4lo.com/
As for the gears its possible on an older truck that the gears might have been changed anyway so the VIN might not tell you anything. Here's a calculator somebody showed me that will tell you the gears...as long as you know everything else: speed, rpms, tranny gear, tire diameter.
http://www.4lo.com/
Post Fiend
Joined: Mar 2002
Posts: 19,402
Likes: 38
From: Bonita Springs FL
what axle do i have?
Then you definately have the ford 9". If you have a manual transmission and a tachometer, you can calculate your gear ratio.
Failing that, you can either take the rear end apart and count the teeth, or you can jack up one side of the rear axle. I think if you spin the rear tire twice around and count the number of driveshaft revolutions, you'll have your gear ratio.
Failing that, you can either take the rear end apart and count the teeth, or you can jack up one side of the rear axle. I think if you spin the rear tire twice around and count the number of driveshaft revolutions, you'll have your gear ratio.
Posting Guru
Joined: May 2003
Posts: 1,437
Likes: 0
From: Oak Harbor WA
what axle do i have?
You can find the gear ratio information for 73-79 trucks on Mil1ion's website...
Find the data plate on the driver's side door, and all the codes should be there. You can find out things like where it was built to with that info.
Find the data plate on the driver's side door, and all the codes should be there. You can find out things like where it was built to with that info.
Thread Starter
|
Junior User
Joined: Sep 2003
Posts: 59
Likes: 0
what axle do i have?
imne does have a diff cover but everything is stoke nothign has been changed. the reason im trying to find out is i want to put a locker in it. im not sure which way to go on thet either. dont know if i want a eton, arb, or detroit locker. never had one so i to know which is best any help with that would be great too
