Help identifying front end

[unknown_soldier]

Hello all. I recently bought an 81 3/4 ton Chevy pickup for parts. The rear is a 14-bolt semi float and has 4.10 gears according to the specification sheet that was still in the glove box from the original purchase. It doesn't say anything about the front end having 4.10 gears though. I would assume that the front would match the rear as far as gearing goes. Is that a good assumption?

Anyway, heres a pic of the front end. I printed the axle spec sheet from the site here to get an idea of what it is but I still don't know. Any help is appreciated.

Thanks!

 

[Blazinaire]

if the truck looks as if it has not been otherwise tampered with, it would be pretty safe to assume that the front axle also has 4.10's. I'm a cheap bastard so I can't see your pic, but it should be a 10bolt axle.

 

[6.2Blazer]

Obviously a 10-bolt front axle.....really easy to tell by the round shape and the ears on the bottom.

Unless somebody switched the axles and/or gears they should be the same front and rear. The option code is a single number stating the axle ratio of both the front and rear, there are not separate codes for the front and rear.

 

[unknown_soldier]

Thanks guys. I was leaning toward thinking it was a 10 bolt, since it has ten bolts. But so did the Dana 60 on the axle spec sheet. Thanks for the clarification.

 

[82355]

A Dana 60 would have a different shaped cover, studs into the pumpkin instead of the long U-bolt for the inner right side of the leaf springs, and king pins instead of ball joints.

Dana 60's also only came in one tons, matched with 14 bolt full floaters, or Dana 70's.

Martin

 

[unknown_soldier]

This is why I pay my 20 bucks a year.

I think I made out pretty good with the donor truck. The motor is humming along nicely in my K-5 and I got some 3/4 stuff with decent gearing. Not bad for $700.