My 66 has the original type single cylinder installed and I plan on converting to a dual for saftey concerns. No disc brake conversion at this time OK (money, lack of) I am retired. Could someone be kind enough to tell me if all I need is the Dual Master, two lines from the DMC, and the new frame mounted block? My main concern is will my existing front and rear brake lines mount to the new block without any problems. Thanks in advance.

Jesse

If you dont want the brake warning light all you have to do is run the rear master port to the brake line running to the rear of the car and the T to the fronts off of the front port of the master. If you want to run a light then you would have the new dual master, lines out of it to the distribution block, and then run your lines to the front wheels from the two 3/16" ports and the line to the rear from the 1/4" port. Line sizes are standard 3/16" and 1/4" but I am sure the nut sizes will differ and you will be making some new lines to get this done unless you mount the block where the original lines would reach (and your line nut sizes match). You will have to compare what you have to what distribution block you get, different ones have different nut size outlets. Not a big deal if you have a double flare kit. I just had to make my own lines this morning for the rear of my F150, ford used 3/16" lines with 1/4" nuts so nothing off the shelf would fit.

disconnect rear line from distribution block and plug hole. Run rear line directly into rear port on dual master. Buy new brake line and connector from old rear line to reach new master. Take existing single master line to T and connect it directly to other port on dual master. You can use adapter fittings on master to connect to 1/4 or 3/16 inch lines. All fittings, plug and line are available at full size auto parts store. Take new dual master there to be sure you get right adapters once you determine what line size you have on the car now.

Thanks guys for the responses. I did not ask the question right the first time. Here is where I am going with all this. I show my 66 and try very hard to keep it pretty much stock appearing. I was hoping someone with a 66-67 that had done this job before would have jumped in with some facts. My question is would Fine Lines or Right Stuff sell the two lines (stock appearing) including the dual frame block set up. Also would this set up be a direct hook up with my existing front and rear brake lines. Thanks again.

Jesse

My question is would Fine Lines or Right Stuff sell the two lines (stock appearing) including the dual frame block set up. Jesse,
Most kits don't include the junction blocks, just the lines... To keep it completely "stock", you will have to also find the juction blocks for a 67 A-body (probably have to find them used). Maybe 68+ blocks would also work, I don't know). You would then likely have to get new brake lines, at least the front-to-rear line (and maybe those front lines) as they would now go to the proportioning/distribution block, which I think is in a different location than 1966...

Easiest would probably be to remove the rear line from that front "1966" distribution block, plug that orifice and use the original line from the master cylinder to activate the front brakes... Run the new line from the "rear" of the master down to a fitting (90-degree) that adapts to the existing rear line... This 90-degree fitting can likely be placed right by the old distribution block... Might need a bit of tweaking...

This shouldn't be apparent to too many(if any) people at car shows... How many people look at the brake lines, especially to see if they are stock?

I have actually been consideringthis for my 66 Chevelle for much the same reason (I want the safety of the dual system)...

Maybe a master cylinder for a 67 Chevelle would work best...

Of course this would never look "stock" on a 66, but it can easily be made to look factory. You would need a 67 master cylinder and 67 distribution block, then you could replace all the brake lines with a 67 aftermarket kit. The 66 "T" you have now is up on the frame and the brake lines do not terminate at the same place as a 67 with the distribution block. The block mounts on the inside of the frame rail, and the rear line could be cut and reflared to work, but I believe the front lines would be too short. This is going from memory, my 66 vert I converted to disk brakes and my 66 hardtop is original but in storage.