Axle code for 1979 F-150
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New User
Joined: Jan 2005
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From: nebraska
Axle code for 1979 F-150
Searched this forum and reviewed the available charts recommended but can't find a ratio for this rear axle code. Door data tag lists the Axle as 11J. 1979 F150 2WD 117" wheel base. The previous owner said it used to have a utility box so it may have been a fleet truck or unusual ratio. Now it has no box. Anyway, I would appreciate any help.
Elder User
Joined: May 2005
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From: Graves County, KY
I don't see 11 as an axle code option. 14 maybe? That would be 3.00 gear.
J means it came with power steering. If it came as a chassis cab though, it may not be listed in the normal production axle code lists.
got a pic? Have you checked to see if there is a tag on the rear end with numbers on it?
J means it came with power steering. If it came as a chassis cab though, it may not be listed in the normal production axle code lists.
got a pic? Have you checked to see if there is a tag on the rear end with numbers on it?
Last edited by wintremute; Sep 18, 2007 at 02:28 PM.
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Joined: Aug 2000
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Tracking down that code can be fun. The body code for my truck dosn't exist anywhere. the easiest way not the most accuarte is jack up the rear axle, mark a line on your tire and your drive shaft, rotate your tire one full revolution and count the number of revolutions of the drive shaft. if you have say 3.07's. your drive shaft will turn 3.07 times for each full rotation of the tire.
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Joined: Jan 2008
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I have the decoding information for 77/78/79's on my web page you guys.
You can save it to your favourites and always send people there.
http://www.clubfte.com/users/mil1ion...ruckCodes.html
axle code 11 isn't listed for the 79's so I would need to see the rating plate to verify it is in fact 11
You can save it to your favourites and always send people there.
http://www.clubfte.com/users/mil1ion...ruckCodes.html
axle code 11 isn't listed for the 79's so I would need to see the rating plate to verify it is in fact 11
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