For archival purposes, here's all of the axle codes + more...
Axle Decoder Chart
Code Ratio Capacity Maker Type Yr
12 2.73 3800 FORD REG 1991
17 3.25 3300 FORD REG 1971
17 3.31 3800 FORD REG 1995
18 3.08 3800 FORD REG 1991
19 3.55 3800 FORD REG 1991
25 4.10. 5300 FORD REG 1991
29 3.55 5300 FORD REG 1991
35 4.10. 6250 FORD REG 1991
36 3.73 7400 DANA REG 1980
39 3.55 6250 FORD REG 1991
45 4.10. 7400 FORD REG 1991
49 3.55 7400 FORD REG 1991
65 4.10. 8250 FORD REG 1991
69 3.55 8250 FORD REG 1991
72 4.63 11000 DANA REG 1991
73 5.13 11000 DANA REG 1991
H5 4.10. 3800 FORD LIMITED SLIP 1991
H7 3.31 3800 FORD LIMITED SLIP 1995
H8 3.08 3800 FORD LIMITED SLIP 1991
H9 3.55 3800 FORD LIMITED SLIP 1991
B5 4.10. 5300 FORD LIMITED SLIP 1991
B9 3.55 5300 FORD LIMITED SLIP 1991
C5 4.10. 6250 FORD LIMITED SLIP 1991
C9 3.55 6250 FORD LIMITED SLIP 1987
D5 4.10. 7400 FORD LIMITED SLIP 1991
F5 4.10. 8250 FORD LIMITED SLIP 1991
W5 4.10 8250 FORD LIMITED SLIP 1995
Transmission codes from 1995 Manual
M = manual 5 speed overdrive (Mazda?)
E = Automatic E40D
G = C6 auto
U = 4R70W (4spd auto with overdrive)
C = manual 5 speed close ratio (Z-F)
W = 5 speed H.D. Overdrive
Engine Codes (8th character in VIN) From 1995 Manual
Y = 4.9
N = 5.0
H = 5.8
R = 5.8 HP
C = 5.9
G = 7.5
F = 7.3 DI Turbo
2 = 4.9 natural gas
Engine Codes From 1991 Manual
Y 4.9
N 5.0
H 5.8
M 7.3 Diesel
G 7.5
This is a general decoder for 1980s thru 1990s Ford Pickup F100 thru F350. This article was submitted by David DeLeon.
I think my friend is looking at the wrong number, I got that chart also. I donno, ill have to look my self. There were 2 choices for rotors for the 3800lbs or 4400lbs axle. Its a 86 F250 4 speed.
Well we just took it apart and got the seals for the 44 and 50 front and it was the 44. So as of now, the truck has all new brake lines, rotors, capipers, hoses, plugs, wires, converted to newer style coil, from my mustang. Wire broke and the set I had and never used was for newer style coil, so we changed it. Runs good, stops good.