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10-23-2020, 05:24 PM
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#1 |
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Registered User
 Join Date: Jan 2008
Location: Spokane WA
Posts: 254
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One ton booster upgrade
Quick question.. 72 blazer all orig brake brackets.. Went to upgrade to the one ton booster and found that the bolt pattern on the one ton booster was about 1/2" wider than my orig brackets would accept.
After reading many posts about how the booster just bolted right up I figure I have the wrong booster. I have went over it multiple times, I purchased a booster for a 1972 C30 from Napa, even went back in and got the one for the C20 and the bolt pattern on the back of the booster still 1/2 wider than my bracket will accept. Anyone had this issue? |
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10-23-2020, 07:01 PM
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#2 |
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Registered User
Join Date: Mar 2007
Location: Oakland, Ca
Posts: 1,370
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Re: One ton booster upgrade
According to this write up it says to get a 71-72 K20 or K30 (not C) - not sure the difference but just wanted to point it out.
http://67-72chevytrucks.com/vboard/s...d.php?t=456859 |
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10-23-2020, 07:10 PM
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#3 |
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Registered User
Join Date: Feb 2015
Location: friendship WI
Posts: 174
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Re: One ton booster upgrade
I had the same issue. I had to get mounting brackets from a 1972 C20
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10-23-2020, 08:51 PM
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#4 |
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Registered User
Join Date: Nov 2007
Location: South Tx
Posts: 1,083
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Re: One ton booster upgrade
One thing I recall on mine was that I had to leave the nuts at the firewall loose to seat the booster in the brackets. Then tightened everything down.
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10-23-2020, 09:05 PM
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#5 |
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Registered User
Join Date: Jan 2008
Location: Spokane WA
Posts: 254
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Re: One ton booster upgrade
Yup you were correct.. Must be K.. Just got back from the parts store after pulling out multiple doubled diaphram boosters the C's are half inch wider at the bolt patters, yes keeping them loose was a must.. Thank you for the in
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10-27-2020, 11:50 AM
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#6 |
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Registered User
Join Date: Aug 2017
Location: mountain view, CA
Posts: 361
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Re: One ton booster upgrade
Does this make a big difference on braking?
I'm in general pretty happy with my brakes, i have a stock booster, but i am curious how much of a difference it makes. Or is this necessary for a all 4 wheel disc conversion? |
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10-28-2020, 12:33 PM
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#7 |
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Registered User
Join Date: Dec 2003
Location: Houston, TX
Posts: 734
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Re: One ton booster upgrade
why not go hydraboost?
__________________
'72 K5, known as 'the Fox.' |
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10-28-2020, 02:06 PM
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#8 | |
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Registered User
Join Date: Mar 2007
Location: Oakland, Ca
Posts: 1,370
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Re: One ton booster upgrade
Quote:
To Par's question about how much better this would be over the stock half ton system - the 1 ton master allows you to create more pressure at the calipers. This often creates a stiffer pedal but when combined with the dual diaphragm 1 on booster as well the added brake boost should mitigate that. I think it likely isn't necessary on a stock rig. But if you'd got larger tires or a hopped up engine adding braking power is a must. |
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