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In a previous thread, thought of rebuilding my original Master cylinder, but the rebuild kit cost me almost as much as just buying a new MC.
I want to buy a new MC and be done with it.
I’m from Belgium and was looking on Rockauto and Ebay for an aluminum version. I found one from CPP on Ebay.
Instead of some unknown brand that's likely Asian-made and has no Known warranty or Known reputation
( THAT CPP sure ain't trademarked Chevrolet Performance Products ! )
suggest long-established brand Raybestos P/N MC39052 with Lifetime Warranty AND is engineered to fit 1977-1982 Corvette AND has great reputation. $50 USD
I have the Raybestos master cylinder in my car for 5 years now without issue. I don't like or recommend a rebuilt or to rebuild a master cylinder for any car. Mixing of master cylinder components of different manufacturers don't sit right with me. Just my $0.02
Do you guys know if ACDelco or another brand (not wilwood) makes good aluminum master cylinders that look OEM?
(In Belgium the look of the parts is important for the yearly car inspection.)
Aluminum MC was never OE on serial production C3.
Do your Belgian inspectors Prefer to see an Aluminum MC ? Do they Prefer Aluminum MC, In Spite of the fact that part was never approved by vehicle's OEM ?
Why would the inspector Prefer a Non-OE part over another part that Is an OE-replacement ?
I'd switch to manual braking with a Wilwood MC, if I were you. Perhaps a 15/16" bore, but do your research.
EDIT: It has to look stock? I'd ask for paperwork from the Belgian authorities to see what the rule actually states. There are plenty of aftermarket parts that are superior to the original. The C3 braking system is from the mid 60s.
Do your Belgian inspectors Prefer to see an Aluminum MC ? Do they Prefer Aluminum MC, In Spite of the fact that part was never approved by vehicle's OEM ?
Why would the inspector Prefer a Non-OE part over another part that Is an OE-replacement ?
Why ?
Sorry, I think I was not so clear in my original post.
I mean:
I want to go for aluminum because it has extra advantages like no need for painting and less weight.
The brake fluid damages the master cylinder paint over time. Aluminum wil have some corrosion but does not have to be painted and also because of weight reasons.
My current master cylinder has a horrible leak on the backside. I don’t want to make the mistake of rebuilding something and then noticing leaks again.
(I rebuild my original brakes ones. After a month the brakes started leaking again. I bought new brakes and the problem was solved no leaks for almost 3 years now.)
Do your Belgian inspectors Prefer to see an Aluminum MC ? Do they Prefer Aluminum MC, In Spite of the fact that part was never approved by vehicle's OEM ?
Why would the inspector Prefer a Non-OE part over another part that Is an OE-replacement ?
Why ?
It does not need to be of aluminum for the inpectors. It just has to have the same look.
Want a lighter C3 ? find an old first gen Opel GT (MY1968 - MY1973), those "baby vettes" are Much lighter; then stuff a modern turbocharged GDI driveline into it. They're even lighter today than when delivered new; Rust never sleeps.
Last edited by Rebelyell; Nov 5, 2025 at 03:43 PM.
This is the only one I know of that is the correct bore size for power brakes....https://www.zip-corvette.com/67-j56-...exU6LiGn0c6zZY
I have an aluminum MC that I bought years ago, made by SSBC, but they are no longer made.
CPP master cylinder for 77?
