Master cylinder bore size

[1985olds]

Good afternoon,

Looking for opinions on m/c bore size. I have c6 2 piston calipers front, c4 single piston calipers on the rear. I just redid all of the hard lines and new prop valve. The car is a g body which has a stock size of 7/8. Thinking of using a b body master I have that is 1 1/8. Any thoughts? Than you.

[stab6902]

The later C4's, C5's, and C6's came with 1" bore master cylinders. Assuming you're going with vacuum assist, I wouldn't deviate from 1". Make sure you install an adjustable proportioning valve for the rears as well

[andrewb70]

Power brakes or manual?

Andrew

[1985olds]

The later C4's, C5's, and C6's came with 1" bore master cylinders. Assuming you're going with vacuum assist, I wouldn't deviate from 1". Make sure you install an adjustable proportioning valve for the rears as well


Thay makes sense, didnt think about that. Thank you

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Power brakes or manual?

Andrew

Power

[andrewb70]

Thay makes sense, didnt think about that. Thank you

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Power

I'd do a right hand drive S10 1" bore MC. Details in my GTO v3 update thread.