Ok, Doing the master cylinder lines and wanted to make sure before wasting a brake line - which port on the m/c is for the front brakes? Is it the port nearest the firewall or furthest. It is a vette style 1 1/8 M/C. Thanks Dan

Hi Dan, its always the same, the forward reservoir is for the front brake system. The aft (nearest the firewall) is for the rear brakes. Jerry

Hi Dan, its always the same, the forward reservoir is for the front brake system. The aft (nearest the firewall) is for the rear brakes. Jerry
wrong- there are some that are backwards.
the port with the bigger reservoir will always be the front brakes.

wrong- there are some that are backwards.
The port with the bigger reservoir will always be the front brakes.

x2

Wow, sorry about that Dan, I always had noticed front res. front brakes. I too have a Corvette MC, but I didn't have any problems bleeding so I never had to work or rework any lines. Sorry Jerry

With a 'vette style MC, the fluid bowls are nearly identical. I'm running 4wh discs on my '65, using the Corvette style master. In this case forward is forward, aft is aft.

On a disc/drum setup, the larger chamber (usually forward) is for the disc 1/2 of the system, due to larger fluid displacement needs.

This is my setup on my '65, with the 8" dual diaphragm booster.

http://www.chevelles.com/showroom/data/500/medium/100_3342.jpg

What you can't see is the driver's side of the MC - the output lines criss-cross to feed the proportioning block, and the larger line (from the front of the block) actually feeds the rear brakes. The two smaller lines independently feed their respective front calipers (just a quirk of the prop. block I used - has two front outputs). I guess you could say the prop. block is mounted "backwards", but it's just the way the holes & bracket lined up.