Anybody identify these rotors

[Guy67UK]

Firstly if this is in the wrong place please can an Op move it.

I have recently bought a 67 C10 Stepside and shipped it in from Texas to the UK, well it has got a few issues I didnt know about most of which I have now sorted (wiring etc) and some I am going to leave for a year (paint). To get the truck registered over here It needs to be road worthy. Well the brakes are shot. The pedal was going to the floor with very little effort thankfully the emergency brake worked (just). I found the rear brakes had siezed adjusters on both side now sorted. The whole system was bled but no pedal, the master cylinder was changed as was the booster no pedal. The truck had been converted to power discs and I read on here that power brakes needed to have another hole lower down on the brake pedal that was drilled and I got a fantastic pedal thought my troubles were over untill I went down the road and the same result..... no brakes. I now pulled off the front wheels and check out the calipers and rotors and found the caliper at the far end of its travel on the sliders as the rotor nis well below its min thickness and all the wear is on the inside edge of the disc..
I dont have a pepboys or autozone down the road to go and identify what the discs are off and will have to order them in and dont want to get the wrong parts over. So can anyone help ID these rotors. they have a 4.75pcd and are on a Western Chassis dropped spindle

I hope someone can point me in the right direction with this

Guy

[68bowtie]

check the bolt pattern, rotor diameter and thickness, and the casting numbers. that should help figure it out.

[67ChevyRedneck]

In your 2nd pic you can just see a part number clipped on in the lower left corner. "Google" that number.

[Guy67UK]

My mistake after remeasuring it turns out that the Pod is 5"
After googling the cast number I am still no closer for a specific vehicle fitment

[68bowtie]

i'm not sure what "pod" or "pcd" is, but if you post the items i mentioned earlier that will help us know what you have.

[Guy67UK]

Originally Posted by 68bowtie

i'm not sure what "pod" or "pcd" is, but if you post the items i mentioned earlier that will help us know what you have.

the pcd refers to the bolt pattern and that is 5 on 5
cast number is 3963996
Diameter of disc appears to be 11 13/16 (11.8")
the min thicknes of the rotor is 1.125" so at a guess I would say it was 1.25" originally

Thanks for the help 68bowtie

[67c10rustbuket]

1971-1986 Chevrolet c-10 trucks. Standard equipment on earlier years while later years 1980?+- had two options 1.00 thk rotor or 1.25 thk. Of course you have the thicker or sometimes called HD brakes. Just order parts for a 71 through 79 it's the same brakes.

[michael bustamante]

i was just going to say early 70`s c10

[ga-stepside]

Good information. I have been trying to find out what I have too. That is the same setup on my truck. Casting on the rotors is 3963996 and they are 1.20" thick. BTW the calipers I have are casting caliper GM 5474177.

[ga-stepside]

Question about the rotors. I got on Rockauto.com and ACDelco has two options. A 4.65" height and 4.95" height. I measured mine from the back of the rotor to the outside of the hub and got 4.95". Am I measuring that correctly?