Hello everyone!!

[Israel Perez]

I'm new to this page and don't really know how to use it, any help will be really appreciated.
I just bought a 67 c10 and I want to do the front disc conversion, I've been reading a lot here and I'm thinking on using the parts off a 72, my question is, is that a good option? or should I go with a newer year? maybe like an 80 to 85? I know I have to change ball joints and steering links etc etc, there's a 72 at a local junk yard with all the front suspension still on it, but they also have lots of newer trucks, I'm going this Sunday to get the parts, just want an opinion on which parts to get and from which year, I'm asking this because the parts from the 72 are already over 40 years old, you know what I mean?

[airdale94]

Welcome! Here's a link to a FAQ on the subject. I did this on mine and used 75 parts. On the C20's it moves the front wheels out about 1 1/2". You just have to read up on it. I would say the 72 would be best but you may have to buy new parts, calipers, hoses, rotors, etc.

http://67-72chevytrucks.com/vboard/s...68&postcount=4

[Israel Perez]

Thanks!! I'm going to the junk yard this Sunday, another question, should I get the control arms too? Or should I just replace the ball joints on my control arms with new ones from a 72?

[airdale94]

You can use your upper control arms with new balljoints for disc. But you will need the lower control arms from the 72. The disc lowers have different turn stops for the spindle than the drum.

[Israel Perez]

Ohh ok cool, I'll get the lower ones then, thanks again.

[midniteblues]

you may wanna grab the prop valve and mc.
also the brake lines were routed differntly on a disc truck.
if your gonna do the disc from a 72 more than likely it will be a 5 lug(might wanna grab the rims also)
so unless you buy the 6 lug conversion kits that are avail.
the 72 rear axle may be of intrest too you also

[Israel Perez]

I got new calipers and master cylinder for a 72, I got em for really cheap, under 50 bucks for all 3

[Israel Perez]

And yes, I'm getting the prop valve and the lines for the front

[R.L.]

Welcome to the forums, while your gathering parts look in to a sway bar; there cheap and fairly easy to install and will upgrade the handling of that truck like night and day.

[gipper]

Mr. Perez, you did not happen to live in Michigan in the 60's or 70's did you?

[Israel Perez]

I got the master cyl for a 71 gmc 1500, I'm gonna open the prop valve, maybe an o ring is bad?
@ gipper, no I've always live in Los Angeles

[alsriv2]

Did you completely bleed (bench bleed) the master cylinder before you installed it in your truck? The process is easy to do and easy to screw up if not paying attention to the air bubbles.
I recently messed up my bench bleed on my new master cylinder and I spent hours puzzled why my rear brakes were not bleeding. For me it was caused by poor fitting plastic threaded nipples used in the bench B process. The nipples were allowing air to be sucked into the reservoir and I had to replace the cheap plastic ones with steel ones.
2nd BB with non-leaking lines solved the problem completely.

[Israel Perez]

Ok so I put another prop valve and now the brakes work fine, I opened both and they were different from the inside, not brakes r good with the other prop valve thanks everyone for your help