67 Power Brake Mounting Plate

[Regis L.]

I'm upgrading my 67 roadster to pwr brakes. The upper mounting plate for the booster is held to the firewall with two solid rivets. Can anyone help me with how to crush the rivets. All the rivet squeezer tools i have found so far do not have a large enough jaw opening to get over the hood lip. First post as a returning member last around in the 80's. Thanks for any help you can pass along. Regis L

[Peter J.]

Re: 67 Power Brake Mounting Plate

Regis,
This is pretty straight forward. You just need a good bucking bar (that will fit in the wiper grill cavity), the right size rivet set and an air hammer with if I remember correctly 35 psi or so. Better to go light on PSI than use too much as you can always add more air. I looked at a lot of P/B mid-years before I did mine and it looks just like the factory did it.

[Regis L.]

Re: 67 Power Brake Mounting Plate

Peter,
Thanks for the reply. Sounds like the right approach to me. I'm looking forward to getting it done. I appreciate your help.
Regis

[Joe L.]

Re: 67 Power Brake Mounting Plate

Peter,
Thanks for the reply. Sounds like the right approach to me. I'm looking forward to getting it done. I appreciate your help.
Regis

Regis-----


One thing to keep in mind: I don't think you will notice a very significant increase in braking performance with the power brakes over standard brakes. With a Corvette, I never have noticed much difference.

[Peter J.]

Re: 67 Power Brake Mounting Plate

Joe is right about braking performance but I just wanted a split master cylinder like the system that started in 67 in case of braking problems. It took forever to find the correct dated parts and hardware to do this correctly on my 66 but it's done and works.

[John M.]

Re: 67 Power Brake Mounting Plate

I'm surprised at the power barkes vs standard comment. My 69 BB has power barkes and stops on a dime. I have a non power brakes 67 and I really have to stand on them. Everything is new or rebuilt with just 2000 miles on them. I think something must be wrong, because I REALLY have to stand on them. Nice firm pedal, no stopping power. What's wrong?
Thanks,
John McRae 30025

[Joe L.]

Re: 67 Power Brake Mounting Plate

I'm surprised at the power barkes vs standard comment. My 69 BB has power barkes and stops on a dime. I have a non power brakes 67 and I really have to stand on them. Everything is new or rebuilt with just 2000 miles on them. I think something must be wrong, because I REALLY have to stand on them. Nice firm pedal, no stopping power. What's wrong?
Thanks,
John McRae 30025

John-----


Maybe you've got the wrong pads in the 67. My 1969 without power brakes has always braked without excessive pedal effort. Other C3's that I've driven with power brakes were about the same. I could hardly tell any difference, at all.

I've always used OEM pads in the 1969.

[John H.]

Re: 67 Power Brake Mounting Plate

I'm surprised at the power barkes vs standard comment. My 69 BB has power barkes and stops on a dime. I have a non power brakes 67 and I really have to stand on them. Everything is new or rebuilt with just 2000 miles on them. I think something must be wrong, because I REALLY have to stand on them. Nice firm pedal, no stopping power. What's wrong?
Thanks,
John McRae 30025

John -

When I bought my manual-brake '67 ten years ago, it also required very high pedal pressure for normal braking response; I yanked the wheels, and found aftermarket semi-metallic pads on all four corners. I pulled them and installed OEM organic pads, and required pedal pressure returned to normal. There's no reason to use semi-metallic aftermarket pads on a street-driven car (they also eat the rotors, and the organic pads don't).