I've read countless posts of people doing the LS1 front brake swap onto an LT1 car, then asking about wanting to install the LS1 master cylinder.

For those of us who have a leaking master cylinder and are looking to replace anyways, does anyone have specs on the two master cylinders?

I know that the pedal force required will be greater with a larger bore master cylinder and that the stroke will be shorter. Just wanting to explore options since I will need one anyways.

Anybody have GM part numbers for the either master cylinder with reservoir?

 

I replaced my leaking master cylinder with one from a parts store; looked identical to the stock one as you return the old core to be rebuilt. Works just fine with my 13" Baer Track kit.

 

Anybody know anything about master cylinder sizing? When it is working my stock LT1 unit is entirely adequate (with LT1 brakes as expected) - I just wanted to find out if anybody knew what the bore sizes were just for my own knowledge.

Anybody with GM part numbers?

Due to previous "less than perfect luck" with "parts store" units, I just wanted to explore the cost options of a GM one.

 

Bueller?

Bueller?

Bueller?