What kind of master cylinder is that and which one fits? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Braunschweiger · 04-12-2022, 12:58 PM

Hello community, my truck has a master cylinder for 4 disc brakes installed, but I have a disc/drum, I'm guessing it's from a Corvette, isn't it? Can I install a normal master cylinder from the 1976 truck, does it also fit on the brakebooster?
Fits the screw connection to the brakebooster?
I can't identify it.
Thanks

**The Rocknrod** · 04-12-2022, 01:31 PM

It "looks " like a corvette or camaro master cylinder. It is a shallow depth (where the pedal rod pushes the piston).

Braunschweiger · 04-12-2022, 01:37 PM

Thanks, does a "normal" disc/drum" master cylinder fit from the brake booster bolt on ?

**The Rocknrod** · 04-12-2022, 01:56 PM

Thats a good question, I assume it would. Depending on the master cylinder chosen.

Braunschweiger · 04-12-2022, 02:19 PM

Thanks
I'll see, I'll select a master cylinder for disc/drum that is suitable for brake boosters

**cwcarpenter98** · 04-12-2022, 06:13 PM

Looks like the same aftermarket master cylinder on my truck. The key thing is your proportioning valve hanging off the side of the MC. If it was a kit used by the previous owner, It's probably already set up as disc/drum

Braunschweiger · 04-13-2022, 01:58 AM

No, it was set up incorrectly by the PO, I have now ordered an original master cylinder for a brake booster and rear drums from the '76 C10. I hope it fits on the brake booster

**Chevy Fleetside** · 04-13-2022, 09:33 AM

The master should fit no problem. You might have to get a different push rod though. You will know when putting the new one on.

Braunschweiger · 04-13-2022, 09:40 AM

Yes, I hope and think so too.
I measure it before installing

**LostMy65** · 04-13-2022, 11:57 AM

Side thought... I put one of these in line to the rear brakes. That way I can dial it in to not lock up the rears depending on the load in the back.
https://www.summitracing.com/parts/s...RoC43kQAvD_BwE

Braunschweiger · 04-13-2022, 12:35 PM

Good tip, I think I still have one lying around, I'll take a look

04-12-2022, 12:58 PM	#1
Braunschweiger Registered User Join Date: Aug 2020 Location: Braunschweig, Lower Saxony, Germany Posts: 761	What kind of master cylinder is that and which one fits? Hello community, my truck has a master cylinder for 4 disc brakes installed, but I have a disc/drum, I'm guessing it's from a Corvette, isn't it? Can I install a normal master cylinder from the 1976 truck, does it also fit on the brakebooster? Fits the screw connection to the brakebooster? I can't identify it. Thanks Attached Images __________________ ------------------------------------------- Greetings Harald My 62 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=829782 Last edited by Braunschweiger; 04-12-2022 at 01:33 PM.

04-12-2022, 01:31 PM	#2
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: What kind of master cylinder is that and which one fits? It "looks " like a corvette or camaro master cylinder. It is a shallow depth (where the pedal rod pushes the piston). __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

04-12-2022, 01:37 PM	#3
Braunschweiger Registered User Join Date: Aug 2020 Location: Braunschweig, Lower Saxony, Germany Posts: 761	Re: What kind of master cylinder is that and which one fits? Thanks, does a "normal" disc/drum" master cylinder fit from the brake booster bolt on ? __________________ ------------------------------------------- Greetings Harald My 62 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=829782

04-12-2022, 01:56 PM	#4
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: What kind of master cylinder is that and which one fits? Thats a good question, I assume it would. Depending on the master cylinder chosen. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

04-12-2022, 02:19 PM	#5
Braunschweiger Registered User Join Date: Aug 2020 Location: Braunschweig, Lower Saxony, Germany Posts: 761	Re: What kind of master cylinder is that and which one fits? Thanks I'll see, I'll select a master cylinder for disc/drum that is suitable for brake boosters __________________ ------------------------------------------- Greetings Harald My 62 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=829782

04-12-2022, 06:13 PM	#6
cwcarpenter98 Senior Member Join Date: Jan 2018 Location: Hickory Flat, GA Posts: 4,431	Re: What kind of master cylinder is that and which one fits? Looks like the same aftermarket master cylinder on my truck. The key thing is your proportioning valve hanging off the side of the MC. If it was a kit used by the previous owner, It's probably already set up as disc/drum __________________ Christian Carpenter 1963 C10 - Frankentruck 283, Muncie 3 speed with overdrive Overdrive wiring here 1963-ish truck bed trailer - Half-Wit 1981 C10 - Penny 305, th350 --> Soon to be 350, Saginaw 4 speed 1995 Dodge Dakota Sport "I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson

04-13-2022, 01:58 AM	#7
Braunschweiger Registered User Join Date: Aug 2020 Location: Braunschweig, Lower Saxony, Germany Posts: 761	Re: What kind of master cylinder is that and which one fits? No, it was set up incorrectly by the PO, I have now ordered an original master cylinder for a brake booster and rear drums from the '76 C10. I hope it fits on the brake booster __________________ ------------------------------------------- Greetings Harald My 62 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=829782

04-13-2022, 09:33 AM	#8
Chevy Fleetside Registered User Join Date: Sep 2006 Location: San Francisco Posts: 4,779	Re: What kind of master cylinder is that and which one fits? The master should fit no problem. You might have to get a different push rod though. You will know when putting the new one on. __________________ "A man and his truck, what a beautiful thing" 65 Short Fleetside BBC 65 Long Fleetside 283 3 on the tree for now. my build thread http://www.67-72chevytrucks.com/vboa...d.php?t=259536

04-13-2022, 09:40 AM	#9
Braunschweiger Registered User Join Date: Aug 2020 Location: Braunschweig, Lower Saxony, Germany Posts: 761	Re: What kind of master cylinder is that and which one fits? Yes, I hope and think so too. I measure it before installing __________________ ------------------------------------------- Greetings Harald My 62 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=829782

04-13-2022, 11:57 AM	#10
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,507	Re: What kind of master cylinder is that and which one fits? Side thought... I put one of these in line to the rear brakes. That way I can dial it in to not lock up the rears depending on the load in the back. https://www.summitracing.com/parts/s...RoC43kQAvD_BwE __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035

04-13-2022, 12:35 PM	#11
Braunschweiger Registered User Join Date: Aug 2020 Location: Braunschweig, Lower Saxony, Germany Posts: 761	Re: What kind of master cylinder is that and which one fits? Good tip, I think I still have one lying around, I'll take a look __________________ ------------------------------------------- Greetings Harald My 62 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=829782



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