Chevy Al 1 1/16" bore

[Ed McLawhorn Jr.]

Installing disc on front of 66 Chevy2 with drums on rear. Brake tech stated I needed 1 1/16" mc bore and 10lb residue valve for rears. I seem to remember there was a Chevy Al mc with 1 1/16" bore, but can't remember all details. Hoping someone can help my memory out. Thanks.

Ed
SS2266

[ss3011]

I got one from a early 80's S-10 pickup It had a flatter plastic tank on top .

[Hacksaw]

Don't think anyone made an aluminium master cylinder that looks "stockish". I'm going to try a stock master from a 69 Nova on my Chevy II with the distribution block and prop. valve attached on the brackets that bolt to the mounting of the master. Won't know how it works out till next summer.

[Dave1695]

Ed, is this a drag race car and is the MC mounted in stock location?

[Eman]

Is this for a manual brake set up? For an aluminum GM master cylinder I'd look at an S-10 with manual brakes. I've used a GM MC from an early 80's fullsize pickup before but they are cast iron. Most GM aluminum master cylinders were made for power assist and the problem with them is they are made to mount at an angle, the resevoir is the problem.
I wouldn't worry about a residual ck valve unless the MC is lower than the brakes.

[Greg Barsamian]

NAPA part number M2456, This might be a bolt in for what you are doing

[Bill Bogues]

The s-10 one is the way to go. bolts right up, is level and has enough volume to work with disc brake setup.

[Ed McLawhorn Jr.]

Originally Posted by Dave1695

Ed, is this a drag race car and is the MC mounted in stock location?

Yes, this is a full drag car and yes the MC is mounted in the stock location.

Originally Posted by Eman

Is this for a manual brake set up? For an aluminum GM master cylinder I'd look at an S-10 with manual brakes. I've used a GM MC from an early 80's fullsize pickup before but they are cast iron. Most GM aluminum master cylinders were made for power assist and the problem with them is they are made to mount at an angle, the resevoir is the problem.
I wouldn't worry about a residual ck valve unless the MC is lower than the brakes.

If you don't run the residual valve you wont have a good pedal and the rear drum brakes won't apply with the correct bias. I'd go with the Strange master that has ports set up for 3/16 brake lines. i think its 1" 1/8. That's what I installed on my Firebird and it works and fits great.

[Ed McLawhorn Jr.]

Originally Posted by Todd Hoven

If you don't run the residual valve you wont have a good pedal and the rear drum brakes won't apply with the correct bias. I'd go with the Strange master that has ports set up for 3/16 brake lines. i think its 1" 1/8. That's what I installed on my Firebird and it works and fits great.

Thanks Todd. I can use the 1 1/8" MC. The strange looks like the ticket and priced very reasonable.