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#1
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I thought a list of the different master cylinder codes could be helpful. The codes appear in the 68 and newer Buick, Pontiac, and Chevrolet chassis service manuals. Anyone able to add the Oldsmobile codes (section 5 of the manual) or the 1970 Chevy?
I kept the list short and simple, so there may be more info in the service manual. Chevrolet 1968 AT - drum full-size BS - Drum, manual and power Camaro, Nova, Chevelle AU - metallic manual Camaro, Nova, Chevelle DC & PG - Corvette SA - power disc Chevelle & full-size AD - disc manual Camaro & disc manual & power Nova WT - power disc Camaro Chevrolet 1969 AT - drum full-size BS - Drum, manual and power Camaro, Nova, Chevelle DC & PG - Corvette TA - power disc full-size BA - power disc Chevelle US - power disc Camaro Nova Chevrolet 1970 EB - power disc Camaro BB - power disc Chevelle UT - power disc, Nova Pontiac 1968 HU 1" bore - drum power and manual, full-size CT 1" - drum power and manual, Firebird & Lemans FR 1 1/8" - disc power and manual, Firebird GD 1 1/8" - manual disc, Tempest A-body DW 1 1/8" - power disc, Tempest A-body Pontiac 1969 HU 1" - drum power and manual, full-size CT 1" - drum power and manual, Firebird, Tempest, & Grand Prix, GA 1 1/8" - power disc, Firebird EA 1 1/8" - power disc, Tempest & Grand Prix RA 1 1/8" - power disc, Pontiac (full-size) Pontiac 1970 EB - power disc Tempest & Grand Prix & Firebird RA - power disc Pontiac (full-size) Pontiac 1971 EB - power disc Firebird Buick 1968 & 1969 CT - drum power and manual DW - power disc, Skylark A-body LX - manual drum, LeSabre HU - power drum, LeSabre Wildcat Riviera YM - power disc, LeSabre Wildcat Riviera Buick 1970 CT - drum power and manual EA - power disc Skylark A-body LX - manual drum LeSabre HU - power drum LeSabre Wildcat Riviera RA - power disc LeSabre Wildcat Riviera Oldmobile HU - 67-69 power drum More info on Camaro brakes: http://www.camaros.org/suspen.shtml#Brakecomp 5460346 and 5469309 were the oval disc brake master cylinders. The 346 was used 67-68, 309 was 69 and later. 5470409 was the rectangular master that came out in 1970.
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Kurt S - CRG Last edited by Kurt S; 01-14-2024 at 03:12 AM. |
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#2
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Kurt - "EB" is the code for 1970 Camaro with power brakes...assume it's the same for Firebird as well.
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Steve Nuwer 1970 Z28, Norwood 03A, 48 48, 723 Int, M20, COO, 2021 Legends Platinum restored 1970 L78, Norwood 04C, 17 17, 711 Int, M21, COO, born-with drivetrain project. 1972 Z28, Norwood 11C project, born-with drivetrain, 26 26, 775, M20, CGG project 1970 Z28, Norwood 05C, 48 G, 720 Int, M21, COZ, Original Unrestored (SOLD) www.2ndGenZ.com |
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ScottG (01-09-2024) |
#3
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Added.
Can you see if there is a table of 1970 master cylinders in the 1970 Chevy chassis service manual? In the 69 book, it's on page 5-16. It's not in the 1971 manual, btw. The 70 Pontiac table had many empty rows - it was not complete. Confirmed via another source that 70-71 Firebird was EB. Thanks!
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Kurt S - CRG |
#4
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I have 1972 Chevy Nova SS Master Cylinder with a OX stamping. Anyone know much about this stamping?
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#5
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I have a rebuilt 409 BE
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Chuck Sharin [email protected] Auburn,WA (30 miles South of Seattle) 70 Camaro R/S Z-28, L-78, R/S SS 69 Camaro COPO "recreation" Last edited by CamarosRus; 01-09-2024 at 05:29 AM. |
#6
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![]() Quote:
There's just a footnote that says,"See Kurt S." ![]() |
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#7
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I believe BE is 1972 Chevelle w PDB
Could also have other applications.
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1969 Camaro RS/SS Azure Turquoise 1969 Camaro Z/28 Azure Turquoise 1984 Camaro z/28 L69 HO 5 speed 1984 Camaro z/28 zz4 conversion 1987 Monte Carlo SS original owner |
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RPOLS3 (01-10-2024) |
#8
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Thanks for checking the manual Rick!
The master cyl info is not in the 67 and 71 GM manuals, but it is in the 68-70 Chevrolet, Pontiac, and Buick manuals (except missing in the 70 Chevy manuals). Someone will have the Olds manuals to check. ![]() I haven't seen the info in a Delco Moraine catalog - did they print a master cylinder catalog? This is one for the boosters. The parts manuals are poor sources for this type of information. BE has also been listed as 70+ full-size and I think it had many applications in the early 70's.
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Kurt S - CRG Last edited by Kurt S; 01-10-2024 at 01:21 AM. |
#9
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UT code for a 70 Nova if anyone wants to know.
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#10
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Rebuilt BE "409"
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Chuck Sharin [email protected] Auburn,WA (30 miles South of Seattle) 70 Camaro R/S Z-28, L-78, R/S SS 69 Camaro COPO "recreation" Last edited by CamarosRus; 01-14-2024 at 03:21 AM. |
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