Re: Rear axle-parts identyfication
 

If your truck is a 1964-1965 GMC 1500 and the part number (see attachment) from Rock Auto, then it is. What year and model is your truck? I don't remember.

Re: Rear axle-parts identyfication
 

theoretically C1000 but I have diffrent axles - 8 lugs. Pistion bore is the same and brake cylinder look similar to mine.
I recalculated the cost of new brake cylinders vs. new lines and proportional valve and the version with new cylinders will be easier and cheaper.

Re: Rear axle-parts identyfication
 

What is the year and model of your truck? 8 lugs should be a GMC 1500.

Re: Rear axle-parts identyfication
 

c1000 1965

Re: Rear axle-parts identyfication
 

A C1000. That would make your truck a Chevrolet and not a GMC. GMC does not use a letter in front of the number, but Chevrolet do. There will be some parts differences between the two manufactures. Do you have any pictures of your truck for everyone to see?

Re: Rear axle-parts identyfication
 

I just look up your original posting with the pictures. The front grill does says GMC. And it looks really good. Are you sure it is a C1000? With 8 lugs on all four wheels it should be a GMC 1500. Did you double check the data plate to see if it says C1000 or 1500 (with no letter in front of the number)?

Re: Rear axle-parts identyfication
 

Sorry for the mistake - GMC 1000. axles are definitely not from 1000, but probably from 1500/2500.
My car was recovered after being stolen, so I'm wondering if maybe there's a mistake in the paperwork and it's not a 1000 but a 1500/2500. What's the difference between the 1000 model and the 1500/2500 model?

Re: Rear axle-parts identyfication
 

The new parts have arrived. They look the same as the original ones, but while the inner diameter of the piston is identical, from the outside there is almost 1cm difference on the diameter of the housing.
And shipping from the US to PL was very fast - 2 days from order to delivery :D