U7 Axle Code, 1985 F700
Can anyone shed some light on what exactly I've bought?
VIN - 1FDNF77H5FVA12421
WB - 171
Type/GVW - F770
Body - GH8Trans - SNAxle - U7
AT least that's how I interpret the included image. Thanks!
Last edited by Thunderspud; Oct 2, 2021 at 09:50 PM. Reason: Spelling.
https://vincheck.info/check/report-s...NF77H5FVA12421
From the 1980/ MPC:
1FD = Ford Motor Co USA incomplete vehicle
N = Class 6, 19,501 to 26,000 lbs GVWR
F77 = F700 gas with 4x4 option
H = 370 V8. All versions of the 370 are covered by this code. Standard gas, low compression, LP gas, each 2BBL or 4BBL
5 = check digit
F = 1985
V = Kentucky Truck Plant
A12421 = Production sequence number
171 = 171 inch wheelbase
F770 = F700 gas 4x4 21,200 lbs GVWR (Note your tag says 24,000 lbs GVWR)
GH8 = I don't have that info. This is cab, seat, upholstery.
Trans code SN = Spicer model CM4054A five speed direct transmission
Axle code U7 = Rockwell (Timken) model H-173 single speed rear axle, 17,500lbs capacity, 6.83 ratio
141981 this appears with "DSO" printed under it.
14 = Pittsburg District Code
1981 = Special order number.
No front axle code & no paint code, so paint & front axle probably part of the special order
I have not done many decodes of 17 digit VIN trucks so if something doesn't match up, please let me know.
https://vincheck.info/check/report-s...NF77H5FVA12421
From the 1980/ MPC:
1FD = Ford Motor Co USA incomplete vehicle
N = Class 6, 19,501 to 26,000 lbs GVWR
F77 = F700 gas with 4x4 option
H = 370 V8. All versions of the 370 are covered by this code. Standard gas, low compression, LP gas, each 2BBL or 4BBL
5 = check digit
F = 1985
V = Kentucky Truck Plant
A12421 = Production sequence number
171 = 171 inch wheelbase
F770 = F700 gas 4x4 21,200 lbs GVWR (Note your tag says 24,000 lbs GVWR)
GH8 = I don't have that info. This is cab, seat, upholstery.
Trans code SN = Spicer model CM4054A five speed direct transmission
Axle code U7 = Rockwell (Timken) model H-173 single speed rear axle, 17,500lbs capacity, 6.83 ratio
141981 this appears with "DSO" printed under it.
14 = Pittsburg District Code
1981 = Special order number.
No front axle code & no paint code, so paint & front axle probably part of the special order
I have not done many decodes of 17 digit VIN trucks so if something doesn't match up, please let me know.








