what rear end do i have or any information would be helpful thanks

 

Next week, I'm out of town.....

 

C85 = C850

L = 534 4V Super Duty gas V8

U = Louisville Assembly Plant

A32392 = 1967 series number. (this also works for 1976, BUT there is no C85 or model C855 for 1976, and the assembly code would be V, for Kentucky Truck which is where all these were made after 9/69, and there would be a front axle code) (October 1966 production)

153 = 153 inch wheelbase

J = Red

C855 = C850, 27,500 lbs GVWR, "Except State of PA"

A91 = Possibly Custom Cab, my info is limited on this. Upholstery and seat type are all figured using this, but again, I don't have it.

N = Dana (Spicer) model 6352 five speed direct transmission

4K = Eaton model 1880 single speed rear axle, 22,000 lbs capacity, 6.50 ratio (I had a tough time finding this one as my resources are limited. Confrim you do have a single speed axle. You can find ratio and model number on the carrier casting above the pinion and stamped on the driver side axle housing.)
No front axle code, meaning it's probably the "standard" front axle, with a capacity of at least 6,000 lbs.

27500 =27,500 lbs GVWR

235 3000 = 235 certified net HP @ 3000 RPM

740033
74 = Seattle District Code
0033 = Special Order number.

 

A91: A = Light Gray Crush Vinyl & Gray Twill Stripe Woven Plastic // 91 = 91B Custom Cab

 

hello , vin c85lua32392 ,, thanks for your help

 

Merged with this older thread where the whole plate is decoded.

Added an update or two as well.