I cant find any website that talks about 80's 9" rear axle code tags. this is what mine says I think
E A 2B05
50 9 S319B

can anyone put that in english? Its on an 82 f150
thanks

 

I think there's a label on the driver's side door opening that has a rearend code (at least on an '81).

That code would most likely give you the info you need.

Just post that code and someone will most likely have the info.

 

You're missing the first numbers on the left hand side. But, I can tell you that you have a 3.50 geared 9", 3.50 is the only factory 9" ratio that ends in 50.

 

it says H6 in the jam

 

Limited Slip:
Code...........Man...Size.......GVW....Gear Ratio
H6.............Ford......................3750..... ..3.50

 

H6: limited slip rear

3750 lb. rating

3.50 ratio

That's what it shows in my 81 book

 

Already been answered, but I did finally find a chart for these trucks the other day for another thread. Here it is again just for kicks. Wish mine said H6, mine's the 16.

Ford Rear axle codes used from 1981-1986
13- Ford 9" 2.75 ratio 1981-83
13- Ford 8.8 4.11 ratio 1985-86
H3- Ford 9" ls 2.75 ratio 1981-82
H3- Ford 8.8 axle 4.11 ratio with limited slip 1985-86 (3800 pound)
14- Ford 9" 3.00 1981-1986
H4- Ford 9" 3.00 Limited slip diff 1981-86
15- Ford 9" 3.25 1981-82 and 2.73 in 1983
H5-Ford 9" 3.25 limited slip 1981-82 and 2.73 in 1983
16- Ford 9" axle 3.50 ratio (3750 pound)verified
H6- Ford 9" axle 3.50 ratio with limited slip (3750 pound)verified
18- Ford axle 8.8 3.08 ratio (3800 pound) 1983-86verified
H8- Ford axle 8.8 3.08 ratio limited slip (3800 pound) 1983-86verified
19- Ford axle 8.8 3.55 ratio (3800 pound) 1983-86verified
H9- Ford axle 8.8 3.55 ratio with limited slip (3800 pound) 1983-86verified
23- Dana 60-3 axle 3.54 ratioverified
24- Dana 60-3 axle 3.73 ratio verified
29- Ford Semi Float Sterling 10.25, 3.55 ratio
B9- Ford semi Float Sterling 10.25, 3.55 ratio limited slip diff
B5-Ford semi Float Sterling 10.25, 4.10 ratio limited slip diff
39- Ford full float Sterling 10.25 3.55 (single rear wheel)
C9- Ford full float Sterling 10.25 3.55 (single rear wheel) with limited slip diff
35- Ford full float Sterling 10.25 4.10 (single rear wheel)
C5- Ford full float Sterling 10.25 4.10 (single rear wheel) with limed slip diff
33- Dana 61-1 3.54 ratioverified
C2- Dana 61-1 3.54 ratio with limited slip diffverified
52- Dana 70-1 HD 4.10 ratio (8700 rating)verified
53- Dana 70-1 HD 3.54 ratio from 1983-86 (4.56 in 1982) (7400 rating)verified
E2- Dana 70-1 Hd 4.10 ratio with limited slip diffverified
49- Ford Sterling 10.25 dual rear wheel 3.55 ratio (7400 rating)verified
D5- Ford Sterling 10.25 dual rear wheel 4.10 with limited slip diff (7400 rating)
69- Ford Ford Sterling 10.25 dual rear wheel 3.55 ratio (8250 rating)
F5- Ford Ford Sterling 10.25 dual rear wheel 4.10 ratio limited slip (8250 rating)

 

Great stuff tgore3 .... thanks for posting it!

 

No problem

 

Great chart - answered my next question without having to post a new thread. Thanks!!

 

Thanks for all the info, folks. I'm new here - I'm working on restoring an '81 F150 short box, stepside, 4x4; restoring an '86 F350 crew can, longbox dually; an '86 F250 4x4 on propane; and a '91 F250 7.3 IDI 4x4. You folks always have the answers to my questions, even before I post them!

 

S319B = Ford 9" WFE rear axle / 3.50-1 / Limited Slip / 3,750 lbs. rear axle capacity.

 

I attempted to read the tag on mine in darkness, using flashlight. It's weathered a bit since '81. I'll clean the tag off in AM and give it a better look.
350 ratio, 4 speed tranny, 351 engine, and a light weight truck should give me fairly respectable gas mileage.
My '81 F150 stepside shortbox is my baby that will only be allowed outside when the weather is nice and the roads are dry. Same goes for my '86 F350 crewcab dually - I have younger trucks to do the serious work. My Old Dually is only allowed out to play when the road is good.
Fords Forever!

 

Welcome to FTE

Ford = Flareside, a stepside is a (gasp) Chevrolet.

 

Ouch! Flareside/stepside...thanks, I'll try to get it right from here onwards!
Thanks for the welcome.