master cylinder for vette brakes
 

vete pbr fronts and 02 camaro rears.

what master cylinder bore size for manual master cylinder.

i plan on installing a billet master cylinder just wondering what bore size i should go with.

i was looking at this cylinder so i can adjust the rear bias

http://www.abspowerbrake.com/images/...557_masCyl.jpg

the center one 1373 wich has the porpotioning valve built in for clean plumbing

i just need to know what bore size to run for manual brakes with these calipers.

What vette calipers?

I think most that run a manual system, use a bore size smaller then 1".

If you're running C4 front calipers, a 7/8" master cylinder is preferred. If you're running C5/C6 front calipers, 7/8" to 15/16" bore master cylinder.

Tobin
KORE3

Sorry for this hijack but what would be good for a C4 front and stock rear drums for my 68 in manual mode. On my 69 I tried a 15/16 mc and the effort was too high although going to HP plus pads helped.

Rick, 15/16" bore MC with C5/C6 front calipers is virtually the same as 7/8" bore MC with C4 calipers (12-13% difference in area for both the calipers and the MC's). Your pedal travel shouldn't be excessive with the 6:1 pedal ratio, but definitely check it after installing the smaller bore MC. I've been meaning to look at whether there is a compatible, smaller bore rear wheel cylinder to reduce pedal travel since the MC is now generating more pressure, but haven't yet found the time for that particular research project.

Tobin
KORE3

Thanks again, Tobin. What is a good manual 7/8" MC candidate?

Wilwood's 260-9439 is a good 7/8" bore candidate for the money. I'm sure Frank at Prodigy/GP could hook you up.

Tobin
KORE3