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Username Post: Treadle-vac        (Topic#347694)
Forum Newbie
Posts: 72
Loc: Alameda, CA
Reg: 10-02-04
10-16-17 10:12 AM - Post#2711013    

A friend whose '57 now has a modern brake system is selling the original treadle-vac power brake components. It worked 5 years ago. My '56's manual brakes could use a boost; thoughts on refurbishing the treadle-vac and is it a worthwhile upgrade? THX! Jerry


Posts: 104

Loc: Eastern NC
Reg: 07-13-08
10-16-17 11:26 AM - Post#2711016    
    In response to jcsbelair

The two questions you should consider are; do I want to keep my car "Original", and is it worth it to me. So here are my thoughts.
1. They work very well when working correctly.
2. When they aren't it is difficult to find a good repair site.
3. If you don't have a tredle vac now you will have to re-drill your brake pedal to accept the master cylinder brake rod at a new location, or replace the pedal with the correct one.
4. You will have to ask other folks but I believe the 55-56 system does not work in a 57 as a 57 system was designed slightly different.
5. You will also need a vacuum tank and a one way vacuum valve, plus hoses.
6. A tredle vac does not fit in a 57 with standard transmission, they were made only for automatics.
7. If my car was not all original I'd opted for the modern power brake system as it is more up to date and parts are more readily available.
8. --and why did the owner remove it from his vehicle and install a modern day system?
If you add a Tredle-Vac system to your car you may want to have the 56 Factory Assembly Instruction Manual handy.
Good luck, Chevi

Frequent Contributor
Posts: 1344

Loc: Lake George, NY
Reg: 11-11-15
10-16-17 02:29 PM - Post#2711038    
    In response to Chevi

Agreed on every point, they were troublesome from day one.

Forum Newbie
Posts: 72
Loc: Alameda, CA
Reg: 10-02-04
10-16-17 03:11 PM - Post#2711043    
    In response to Chevi

This looks like a job way beyond my or my techs abilities!!! My current manual brakes were totally rebuilt recently and work fine.

The '57's owner completely modified his car; Vette engine, TREMEC trans, modern brakes etc.

'If it isn't broken, don't fix it!' may be my deciding logic!



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