I was workin on my dads 84 Blazer and it needs a new master cylinder, I was lookin around and did a search but didn't find to much on the different master cyclinders. What I want to knew is what is the largerest bore for a chevy master cylinder? Right now it has disc/drums but plan on putting discs on the rear. Also need the larger size, cause were thinking of putting 4 piston corvette calipers front a rear. Is the corvette one good enough, or is there a larger one out there, from a caddy? Oh and it has the hydro boost on it does the 1 ton systems any stronger that what is on the blazer now??

Thank for any info

Bryan

In the earlier years, GM used a lot of similar M/C in their cars. I would go to the parts store, like Autozone, and have them pull a camaro w/all discs and compare it to your current master cylinder. Try several GM cars, just besure you get the part number for discs.

Discs opperate on pressure while drums work off volume of fluid. So for discs, you want a smaller bore for the rear discs. I have a 97 s-10 and I'm swapping a ford lincoln 9" w/ discs, and I'm using a first gen s-series Typhoon M/C. The mounting is the same too, a direct swap.

Just repalce the M/C with the same that came on the truck. The stroke and bore will work fine with 4 wheel discs. You might want to add a adjustable proprtioning valve so you can get the brakes dialed in according to your particular driving style.