WTB rear differential for 63 C10
 

Looking for a rear diff complete 5 X 5 preferably w/ posi.
Anyone got one laying around? If not I will proceede with converting my current 6 lug over and adding a posi or Tru track

Re: WTB rear differential for 63 C10
 

If your not successful finding one - I have a 64 6 lug posi and am upgrading to 5 lug posi using this guys components: http://www.quickperformance.com/GM-1...-12T_c_54.html

Re: WTB rear differential for 63 C10
 

Interesting, are you planning on doing the upgrade yourself?

Re: WTB rear differential for 63 C10
 

Local shop in China Spring, TX will do the work. If it were a 9" I would.

Re: WTB rear differential for 63 C10
 

Ok, sorry for all questions, but do you have to purchase 5 lug drums when doing this conversion or can the 6 lug be redrilled to match new axles?

Re: WTB rear differential for 63 C10
 

You can redrill your original drums. However since the hub register on the new axles will be aprox 1/2" smaller in diameter, I would recommend new 5 lug drums.

Re: WTB rear differential for 63 C10
 

Ok, good to know. Would these drums from a 73 through 87 fit with the 63 conversion as long as they are from a 12 bolt?

Re: WTB rear differential for 63 C10
 

As long as they are for the 2" wide shoes and not the 2-3/4" wide shoes, yes they will work.

Re: WTB rear differential for 63 C10
 

Found a rear from Jimmy on CL
Would this work?
Axle is from a 72 Jimmy 4x4. Axle has new wheel cylinders, e-brake cables, and all break hardware. It is an open carrier with 3.73 ratio. I changed to a 14 bolt so the axle needs a new home.

Any foreseen problems for using in 63? Brake size, differential width?

Re: WTB rear differential for 63 C10
 

[QUOTE=63frankintruck;7445808]Found a rear from Jimmy on CL
Would this work?
Axle is from a 72 Jimmy 4x4. Axle has new wheel cylinders, e-brake cables, and all break hardware. It is an open carrier with 3.73 ratio. I changed to a 14 bolt so the axle needs a new home.

Any foreseen problems for using in 63? Brake size, differential width?[/QUOTE

I had the seller measure today and this was his findings:

Brake shoes are 11" x2"

Backing plate tp backing plate is 56"

I did not get a chance to measure my differential today and now its too dark outside. (So I'm not sure if this rear for sale will fit or not) :dum:

Re: WTB rear differential for 63 C10
 

A '72 Jimmy 4x4 will have leaf springs as well as be 6 lug plus it is an open carrier. I thought you wanted a posi and 5 lug? With this differential you will have to cut off the leaf spring pads and weld on trailing arm mounts as well as the panhard bar mount from your '63 12 bolt. Measuring backing plate to backing plate is a highly inaccurate way to measure the width of a differential. You really should be measuring WMS to WMS (Wheel Mounting Surface). That is the dimension that matters. That '72 12 bolt should be 1.5" wider than your '63 12 bolt

Re: WTB rear differential for 63 C10
 

Thank you sooo much for the help! Saved me a lot of Agravation��