C5 brake booster in C3
Thread Starter
Burning Brakes
Joined: Oct 2010
Posts: 1,192
Likes: 7
From: Wentzville MO
C5 brake booster in C3
Anyone swap out the smaller C5 booster in there C3? I am doing a auto to manual tranny swap and have the remove the steering column to change the pedals. Another while I am there project.
Burning Brakes
Joined: Nov 2004
Posts: 1,193
Likes: 176
From: Hillsborough NC
69427 notes replacing the C3 booster with the C4 booster to shed four pounds in the thread below:
https://www.corvetteforum.com/forums...made-easy.html
Another option would be to replace the master with an aluminum one of the same design. I did this in my car and shed some weight but didn't require any mods at all.
Tech Contributor
Joined: Jun 2004
Posts: 20,910
Likes: 962
From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
OP, I'm not familiar with a "smaller" C5 booster, as the only ones I've seen are nearly physically identical to a C3 booster.
Quite a while back I kicked around putting a C5 booster in my car (purely for weight reduction), but after obtaining one I weighed it and the difference IIRC was in the range of four to six ounces. It wasn't worth the time and aggravation to install it at the time. I then looked at C4 boosters, and all of them are about half the weight of C3 and C5 boosters, although the '84 booster was the only one that would package well due to the diameter being similar to a C3 booster.
If you do install a C5 booster, post some pictures of your progress. IIRC, the only major differences in the C5 booster is the length and termination of the pedal rod, and also the shape/depth of the m/c pushrod which may require the use of a C5 m/c (I was already using a C5 m/c, so that wasn't an issue).
Good luck in whatever direction you decide to go.
Quite a while back I kicked around putting a C5 booster in my car (purely for weight reduction), but after obtaining one I weighed it and the difference IIRC was in the range of four to six ounces. It wasn't worth the time and aggravation to install it at the time. I then looked at C4 boosters, and all of them are about half the weight of C3 and C5 boosters, although the '84 booster was the only one that would package well due to the diameter being similar to a C3 booster.
If you do install a C5 booster, post some pictures of your progress. IIRC, the only major differences in the C5 booster is the length and termination of the pedal rod, and also the shape/depth of the m/c pushrod which may require the use of a C5 m/c (I was already using a C5 m/c, so that wasn't an issue).
Good luck in whatever direction you decide to go.
Safety Car
Joined: Mar 2007
Posts: 3,518
Likes: 37
Why go with a Corvette booster system?
If you are replacing it why not go with hydroboost power brake system. You would get much better performance and it is a smaller install with no booster drum. Can get a whole system made to install in that car with no fit problems.
If you are replacing it why not go with hydroboost power brake system. You would get much better performance and it is a smaller install with no booster drum. Can get a whole system made to install in that car with no fit problems.
