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11-25-2019, 03:07 PM
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#1 |
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Registered User
Join Date: Feb 2012
Location: Lakeway, TX
Posts: 335
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Help! What's the deal with this brake booster on my 72 GMC?
Ordered a new brake booster for my 72 GMC 1/2 ton. See pictures attached. Bolt pattern on the old one looks to be 4", and the new one is 3 3/8". I don't see any options for different boosters to buy. Any idea why my old one has a different pattern? Thanks!
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1972 GMC Sierra Grande (current truck) 1980 Chevy Stepside (gone) 1987 Chevy Blazer (gone) 1972 Chevelle SS Convertible (gone) 1973 Chevy Corvette (gone) 1967 Chevy Camaro (STOLEN!) |
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11-25-2019, 04:01 PM
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#2 |
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Registered User
Join Date: Feb 2012
Location: Lakeway, TX
Posts: 335
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Re: Help! What's the deal with this brake booster on my 72 GMC?
bracket
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1972 GMC Sierra Grande (current truck) 1980 Chevy Stepside (gone) 1987 Chevy Blazer (gone) 1972 Chevelle SS Convertible (gone) 1973 Chevy Corvette (gone) 1967 Chevy Camaro (STOLEN!) |
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11-25-2019, 04:03 PM
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#3 |
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Registered User
Join Date: Feb 2012
Location: Lakeway, TX
Posts: 335
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Re: Help! What's the deal with this brake booster on my 72 GMC?
I'm hoping that for some reason I have the wrong brackets. No idea what this booster is from if that's the case. Just ordered this from Jegs.
https://www.jegs.com/i/JEGS/555/631022/10002/-1
__________________
1972 GMC Sierra Grande (current truck) 1980 Chevy Stepside (gone) 1987 Chevy Blazer (gone) 1972 Chevelle SS Convertible (gone) 1973 Chevy Corvette (gone) 1967 Chevy Camaro (STOLEN!) |
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11-25-2019, 04:03 PM
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#4 |
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Registered User
Join Date: Feb 2013
Location: Upland, Calif
Posts: 698
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Re: Help! What's the deal with this brake booster on my 72 GMC?
Your new one is a China repop that requires the repop bracket also
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1957 CHEVY 1/2 TON SHORT BED 1940 FORD 1/2 TON SHORT BED |
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11-25-2019, 04:22 PM
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#5 | |
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Registered User
Join Date: Feb 2012
Location: Lakeway, TX
Posts: 335
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Re: Help! What's the deal with this brake booster on my 72 GMC?
Quote:
Hopefully the bracket I got from Jegs will fix the problem.
__________________
1972 GMC Sierra Grande (current truck) 1980 Chevy Stepside (gone) 1987 Chevy Blazer (gone) 1972 Chevelle SS Convertible (gone) 1973 Chevy Corvette (gone) 1967 Chevy Camaro (STOLEN!) |
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11-25-2019, 04:55 PM
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#6 |
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Registered User
Join Date: Feb 2013
Location: Upland, Calif
Posts: 698
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Re: Help! What's the deal with this brake booster on my 72 GMC?
You better cancel those brackets. They're for a 67-72 Chevelle
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1957 CHEVY 1/2 TON SHORT BED 1940 FORD 1/2 TON SHORT BED |
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11-25-2019, 04:56 PM
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#7 | |
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Registered User
Join Date: Feb 2013
Location: Upland, Calif
Posts: 698
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Re: Help! What's the deal with this brake booster on my 72 GMC?
Quote:
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1957 CHEVY 1/2 TON SHORT BED 1940 FORD 1/2 TON SHORT BED |
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11-25-2019, 04:59 PM
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#8 |
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Registered User
Join Date: Feb 2013
Location: Upland, Calif
Posts: 698
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Re: Help! What's the deal with this brake booster on my 72 GMC?
This one on Ebay: https://www.ebay.com/itm/1967-1972-C...IAAOSwOTNZ1V-4
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1957 CHEVY 1/2 TON SHORT BED 1940 FORD 1/2 TON SHORT BED |
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11-25-2019, 05:25 PM
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#9 | |
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Registered User
Join Date: Feb 2012
Location: Lakeway, TX
Posts: 335
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Re: Help! What's the deal with this brake booster on my 72 GMC?
Quote:
__________________
1972 GMC Sierra Grande (current truck) 1980 Chevy Stepside (gone) 1987 Chevy Blazer (gone) 1972 Chevelle SS Convertible (gone) 1973 Chevy Corvette (gone) 1967 Chevy Camaro (STOLEN!) |
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11-25-2019, 06:20 PM
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#10 |
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Go Pack Go!
Join Date: Nov 2005
Location: Green Bay
Posts: 2,669
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Re: Help! What's the deal with this brake booster on my 72 GMC?
Get ahold of Frank (pickmup) in Washington State. He builds power brake boosters that are better than factory.
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11-25-2019, 09:08 PM
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#11 |
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Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,714
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Re: Help! What's the deal with this brake booster on my 72 GMC?
I found that out the hard way as well. I could not find a rebuilt booster so I bought the whole kit and tried to use new booster on oem brackets and they were different sized. I used all the conversion setup except the pushrod because the original one looked WAY more heavy duty.
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44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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11-26-2019, 06:44 PM
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#12 |
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Registered User
Join Date: Feb 2012
Location: Lakeway, TX
Posts: 335
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Re: Help! What's the deal with this brake booster on my 72 GMC?
Screw it. Ordered a reman unit from O'Reilly. Should be here tomorrow. Won't look as good as a new one, but should bolt on. Hope I can return the Chinese one to LMC without too much trouble....
__________________
1972 GMC Sierra Grande (current truck) 1980 Chevy Stepside (gone) 1987 Chevy Blazer (gone) 1972 Chevelle SS Convertible (gone) 1973 Chevy Corvette (gone) 1967 Chevy Camaro (STOLEN!) |
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