Brake Line / Drum Size?

[Hostility]

I couldn't find the answer via the search function.

1992 C1500 Extended Cab - Long Bed

Does anyone know what size brake line is running along the driver's side frame? Mine sprung a leak in front of the rear axle.

Bonus question, does anyone know how to tell if my truck came equipped with 10" or 11" drums without pulling off the wheel and measuring them? Is there a vin code to look up or something?

Thanks in advance to anyone that can help.

 

[df2x4]

I don't know the line size, but this thread should help with your drum size question. There is a three digit RPO code that starts with the letters JB which you should have on your glovebox sticker. Cross reference that to the specs in here.

https://www.gmt400.com/threads/jb5-jb6-jb7-jb8-size-thread.39647/

 

[454cid]

Buy a set of cheap calipers if you don't already have them, and measure it...... the grey plastic ones at Harbor Freight are cheap and handy.

 

[evilunclegrimace]

I couldn't find the answer via the search function.

1992 C1500 Extended Cab - Long Bed

Does anyone know what size brake line is running along the driver's side frame? Mine sprung a leak in front of the rear axle.

Bonus question, does anyone know how to tell if my truck came equipped with 10" or 11" drums without pulling off the wheel and measuring them? Is there a vin code to look up or something?

Thanks in advance to anyone that can help.

The line is 1/4" along the frame, it drops to 3/16" at the tee end of the rubber line in the rear.

 

[Hostility]

That's all I needed to know, thanks again for the replies.

 

[evilunclegrimace]

That's all I needed to know, thanks again for the replies.

Something to consider is to get a coil of cupro/nickel brake line and order a few SS brake line nuts and your lines will last a heck of a lot longer

 

[454cid]

I'd suggest the NiCopp/CuNIFer line..... the "copper" line at the parts store. It won't rust out again, like mine did, and I even bought the coated line the first time. I bought the NiCopp line by AGS from Advance Auto..... 1/4" as stated above, as I just verified it looking at my transaction history online.

 

[deadbeat]

NiCo lines are the only way to go. Mine have been on about 5 years now and look just like they did when I put them on. The only thing I will mention is when I put my stainless braided lines on, one of the cheap steel nuts was seized to the NiCo line, so maybe go with stainless nuts and put a little anti seize where the nut sets.