GCF

Good thought. Ill take it apart and see if its the same. I am running all new lines so shouldnt have any issue adapting to metric. I noticed the threads were different but didnt know what size it was so thanks for telling me. Where can i find info on the Mike Klotz disc brake kit? Think i might have seen a thread on it. Maybe while im at it.......

I am in the process of changing the master cylinder on my 521 to a dual reservoir master but keeping the drums all around. I have this new master from what I believe an early 70s 510. I know I need to change the residual valves to keep 10 lbs in the front and rear. Am I able to buy internal parts for these? Or could I remove both residual valves and run external valves in each line? Notice the rubber valve for the front has two extra slits in it (red lines in the photo).

I am in the process of changing the master cylinder on my 521 to a dual reservoir master but keeping the drums all around. I have this new master from what I believe an early 70s 510. I know I need to change the residual valves to keep 10 lbs in the front and rear. Am I able to buy internal parts for these? Or could I remove both residual valves and run external valves in each line? Notice the rubber valve for the front has two extra slits in it (red lines in the photo).

Is the stock MC a 3/4? If so would something like THIS work without the booster? Thanks for the help.

Really want to get this truck drivable but the brake lines are pretty corroded. If I go through the trouble of replacing the brake lines I would also like to swap out the master cylinder with a dual reservoir. Im fine keeping the drums all around, is there a dual master cylinder that would work without too much headache? or should I just keep the original master cylinder for now? I will probably do discs up front in the future.

Sorry still trying to find the best way to post images.

Well I found a bench seat locally from a 95 D21. Took the chance and it seems to fit great. Will have to do a little bit of work to get it bolted in the right position but fitment wise I think it'll work. Maybe a little long in the legs but Im not going to complain.

Im just south of Knoxville. Asheville is about 3 hours from me. What do you have? Are there any bench seats known to fit?

Maybe I'll try restoring my tank first to see how it goes. Like I said the inside really isnt that bad other than a couple holes! 😂 How hard is it to find a bench seat that'll fit the 521? Previous owner threw out the bench seat because it "was shot" and put in some buckets from who knows what that puts the steering wheel under your chin. I assume most bench seats are going to be too wide. Any ideas on what to look for?

Just picked up this '70 521. No long term plan yet, I just want to go through and fix a few things so I can start driving it. Previous owner essentially rebuilt the engine so mechanically it runs fine. There are a few things I need to do first... Gas tank leaks. 1/4" hole on the back someone tried to patch with JB Weld and it also leaks around the seam. A little rust inside but it's not bad. Guy at a radiator shop told me it cannot be repaired and then quoted me $350 and i said nope. I think i would like to buy a new universal tank but keep it in the same location and use the existing fill cap if possible. Anyone done this? I dont really want it where the spare is.