master cyl.w pb
03-27-2015, 02:44 PM
#1
Racer
Thread Starter
master cyl.w pb
I have the booster and master off the car , 67 coupe, the master has a casting # 5468309. This # is different than the# in Nolan Adams vol.2, could someone tell me what I have here ,is it a corvette part, it is a delco. I was thinking of rebuilding the cyl. but it may be more prudent to replace the cly. and booster as the body is off the frame and I am replacing all the lines and hoses etc. so if I replace these all will be new.Where is the best place to buy these parts,they don't need to pass NCRS they just have to work .I've seen prices for both ranging from @ 200.00 to close to 500.00.Any help finding a reasonably priced pair would be appreciated . Thanks in advance. Jeff
03-27-2015, 03:08 PM
#2
Le Mans Master
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St. Jude Donor '05, '09, '15
I have the booster and master off the car , 67 coupe, the master has a casting # 5468309. This # is different than the# in Nolan Adams vol.2, could someone tell me what I have here ,is it a corvette part, it is a delco. I was thinking of rebuilding the cyl. but it may be more prudent to replace the cly. and booster as the body is off the frame and I am replacing all the lines and hoses etc. so if I replace these all will be new.Where is the best place to buy these parts,they don't need to pass NCRS they just have to work .I've seen prices for both ranging from @ 200.00 to close to 500.00.Any help finding a reasonably priced pair would be appreciated . Thanks in advance. Jeff
Tom
03-27-2015, 04:00 PM
#3
Team Owner
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The correct master cylinder for your car is casting number 5455509, stamped "DC" in the machined area at the front (in '67, the exact same master cylinder was used for both manual and power Corvette applications).
03-27-2015, 04:12 PM
#4
Racer
Thread Starter
master cyl.
The 309 master cylinder started in 1969, and most usages were for power disc/drum systems (pass. cars and Camaros), with a residual pressure valve in the rear (drum) outlet. There's a small semi-circular machined area at the front of the casting - what 2-letter code is stamped in that surface?
The correct master cylinder for your car is casting number 5455509, stamped "DC" in the machined area at the front (in '67, the exact same master cylinder was used for both manual and power Corvette applications).
The correct master cylinder for your car is casting number 5455509, stamped "DC" in the machined area at the front (in '67, the exact same master cylinder was used for both manual and power Corvette applications).
03-27-2015, 04:21 PM
#5
Team Owner
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That master cylinder is worth some $$ to the '69 Camaro guys, BTW - not too many of the "US" 309 master cylinders left out there.
03-27-2015, 04:34 PM
#6
Racer
Thread Starter
With the "US" stamp, that 309 master cylinder is from a '69 Camaro with power disc/drum brakes; it has a residual pressure valve in the rear outlet, which maintains 10 psi in the rear system, which is required for drum brakes. However, in your application, disc brakes don't use RPV's, and it will make your rear calipers drag and overheat, and will eventually fry your rear brake pads.
That master cylinder is worth some $$ to the '69 Camaro guys, BTW - not too many of the "US" 309 master cylinders left out there.
That master cylinder is worth some $$ to the '69 Camaro guys, BTW - not too many of the "US" 309 master cylinders left out there.