Front Axle Identification chevy 3100
 

Can anybody advise me how I can tell from the front axle and spindles only ( no drums or rotors present)whether I have a 3100 (1/2 ton) or 3600 (3/4 ton) axle on my truck.
I need to buy a set of rotors but It looks as though the front axle has been swapped before I bought it. Hopefully for another 3100 truck axle.
My truck is a 1952 3100 pickup.
Any help would be really appreciated.

Re: Front Axle Identification chevy 3100
 

Howdy,

One way to tell is that 3/4 ton trucks have more robust steering arms.

3100:
https://i.ebayimg.com/images/g/w8sAA...YKq/s-l500.jpg

3600:
https://i.ebayimg.com/images/g/9wkAA...PYK/s-l500.jpg

Re: Front Axle Identification chevy 3100
 

Brilliant thanks, i'll check that out tomorrow.
Much appreciated.

Re: Front Axle Identification chevy 3100
 

Measure the diameter of the spindle. The 53-59 3600 trucks used a 1.49” inner bearing. The 47-52 used a 1.4” bearing

Re: Front Axle Identification chevy 3100
 

Scroll down to page 128 and it gives the differences between the axle. https://www.gmheritagecenter.com/doc...olet-Truck.pdf

After seeing that you should be able to tell with a quick tape measure check.

Re: Front Axle Identification chevy 3100
 

Thanks for all three reply's.
I snuck in the Garage this morning before setting off to work and confirmed I do have a 3100 axle and spindles. Brilliant.
Thanks so much for taking the time to help.

Re: Front Axle Identification chevy 3100
 

I learned something when I looked that up. I knew that there was a difference in the axles but didn't know what the exact difference was.

Re: Front Axle Identification chevy 3100
 

So did I ! That is a link to a fantastic resource ! Thanks very much for posting it ! Lotta great info there.