The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 11-25-2019, 03:07 PM   #1
Gigem
Registered User
 
Gigem's Avatar
 
Join Date: Feb 2012
Location: Lakeway, TX
Posts: 335
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!
Attached Images
  
__________________
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!)
Gigem is offline   Reply With Quote
Old 11-25-2019, 04:01 PM   #2
Gigem
Registered User
 
Gigem's Avatar
 
Join Date: Feb 2012
Location: Lakeway, TX
Posts: 335
Re: Help! What's the deal with this brake booster on my 72 GMC?

bracket
Attached Images
  
__________________
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!)
Gigem is offline   Reply With Quote
Old 11-25-2019, 04:03 PM   #3
Gigem
Registered User
 
Gigem's Avatar
 
Join Date: Feb 2012
Location: Lakeway, TX
Posts: 335
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!)
Gigem is offline   Reply With Quote
Old 11-25-2019, 04:03 PM   #4
mgchevyparts
Registered User
 
mgchevyparts's Avatar
 
Join Date: Feb 2013
Location: Upland, Calif
Posts: 698
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
__________________
1957 CHEVY 1/2 TON SHORT BED
1940 FORD 1/2 TON SHORT BED
mgchevyparts is offline   Reply With Quote
Old 11-25-2019, 04:22 PM   #5
Gigem
Registered User
 
Gigem's Avatar
 
Join Date: Feb 2012
Location: Lakeway, TX
Posts: 335
Re: Help! What's the deal with this brake booster on my 72 GMC?

Quote:
Originally Posted by mgchevyparts View Post
Your new one is a China repop that requires the repop bracket also
Crazy. Surprised I don't see any threads complaining about this. Or maybe nobody buys these crappy boosters from LMC like I did...

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!)
Gigem is offline   Reply With Quote
Old 11-25-2019, 04:55 PM   #6
mgchevyparts
Registered User
 
mgchevyparts's Avatar
 
Join Date: Feb 2013
Location: Upland, Calif
Posts: 698
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
__________________
1957 CHEVY 1/2 TON SHORT BED
1940 FORD 1/2 TON SHORT BED
mgchevyparts is offline   Reply With Quote
Old 11-25-2019, 04:56 PM   #7
mgchevyparts
Registered User
 
mgchevyparts's Avatar
 
Join Date: Feb 2013
Location: Upland, Calif
Posts: 698
Re: Help! What's the deal with this brake booster on my 72 GMC?

Quote:
Originally Posted by Gigem View Post
Crazy. Surprised I don't see any threads complaining about this. Or maybe nobody buys these crappy boosters from LMC like I did...

Hopefully the bracket I got from Jegs will fix the problem.
Most people buy the booster with the truck bracket as a set.
__________________
1957 CHEVY 1/2 TON SHORT BED
1940 FORD 1/2 TON SHORT BED
mgchevyparts is offline   Reply With Quote
Old 11-25-2019, 04:59 PM   #8
mgchevyparts
Registered User
 
mgchevyparts's Avatar
 
Join Date: Feb 2013
Location: Upland, Calif
Posts: 698
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
__________________
1957 CHEVY 1/2 TON SHORT BED
1940 FORD 1/2 TON SHORT BED
mgchevyparts is offline   Reply With Quote
Old 11-25-2019, 05:25 PM   #9
Gigem
Registered User
 
Gigem's Avatar
 
Join Date: Feb 2012
Location: Lakeway, TX
Posts: 335
Re: Help! What's the deal with this brake booster on my 72 GMC?

Quote:
Originally Posted by mgchevyparts View Post
Thanks!
__________________
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!)
Gigem is offline   Reply With Quote
Old 11-25-2019, 06:20 PM   #10
cypressbog
Go Pack Go!
 
Join Date: Nov 2005
Location: Green Bay
Posts: 2,669
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.
cypressbog is offline   Reply With Quote
Old 11-25-2019, 09:08 PM   #11
Mike C
Registered User
 
Mike C's Avatar
 
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,727
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.
__________________
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
Mike C is offline   Reply With Quote
Old 11-26-2019, 06:44 PM   #12
Gigem
Registered User
 
Gigem's Avatar
 
Join Date: Feb 2012
Location: Lakeway, TX
Posts: 335
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!)
Gigem is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 04:53 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com