Dual master cylinder question
Thread Starter
Registered User
Joined: May 2025
Posts: 23
From: Wisconsin
Dual master cylinder question
I have 66 vista cruiser. Would like to upgrade to dual master cylinder. I have used 70s gm disc, drum master on other cars with proportioning valve. Will this work with stock brake booster. Doing motor change this winter and would to do while motor is out. Will add the front add the front disc at later date.
Old(s) Fart
Joined: Mar 2007
Posts: 50,815
From: Northern VA
I have 66 vista cruiser. Would like to upgrade to dual master cylinder. I have used 70s gm disc, drum master on other cars with proportioning valve. Will this work with stock brake booster. Doing motor change this winter and would to do while motor is out. Will add the front add the front disc at later date.
Your 66 power booster uses a long pushrod to the M/C, so you need an M/C with a deep hole. The M/C for a 1962-66 Cadillac is a readily available dual circuit M/C for drum/drum cars that bolts to your booster. It will not work with front discs when you get there.
Thread Starter
Registered User
Joined: May 2025
Posts: 23
From: Wisconsin
Welcome. It is not in your best interest to post the same question in multiple forums. A single thread keeps all responses in one place so incorrect info can be identified and corrected.
Your 66 power booster uses a long pushrod to the M/C, so you need an M/C with a deep hole. The M/C for a 1962-66 Cadillac is a readily available dual circuit M/C for drum/drum cars that bolts to your booster. It will not work with front discs when you get there.
Your 66 power booster uses a long pushrod to the M/C, so you need an M/C with a deep hole. The M/C for a 1962-66 Cadillac is a readily available dual circuit M/C for drum/drum cars that bolts to your booster. It will not work with front discs when you get there.
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