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03-08-2016, 07:09 PM
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#1 |
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Registered User
Join Date: Nov 2015
Location: Norfolk,Virginia
Posts: 19
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70 C30 Brake upgrade
I'm looking into upgrading the front brakes from drum to disc. Anyone know of any ideas or kits that might work?
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03-08-2016, 07:13 PM
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#2 |
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Registered User
Join Date: Oct 2008
Location: Marianna Arkansas
Posts: 7,263
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Re: 70 C30 Brake upgrade
Use the disc from the 73 to 87 just as the C-10 guys do the action is the same just bigger and lots heavier. You also could do the 71-2 swap but you have a much better change finding the 73-87 more coverage that way. Good luck. Jim
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03-08-2016, 07:19 PM
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#3 |
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Registered User
Join Date: Aug 2010
Location: Edwards, CA
Posts: 7,503
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Re: 70 C30 Brake upgrade
Square body factory parts are the way to go.
http://67-72chevytrucks.com/vboard/s...68&postcount=4 Hopefully you have a brake booster now (J70), but if not then that or a Hydroboost would be a great addition as well.
__________________
Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID ** Blazer SPID ** Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders ** Do you have a 1972 Plaid Pickup? ** Plaid Blazer ** Plaid Suburban |
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03-08-2016, 07:19 PM
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#4 |
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Senior Member
 Join Date: Mar 2003
Location: Colfax-California
Posts: 8,504
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Re: 70 C30 Brake upgrade
Exactly ^^^. I did my 69 flatbed last summer, I kept the upper and lower control arms. Sourced the rest from a 77...... spindle out.... along with the steering links. It all bolted right up. I did have to have rubber brake hoses made b'cuz of the different fittings on the frame. Rotors were/are thicker than the 71-72 style
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03-08-2016, 07:35 PM
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#5 |
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Registered User
Join Date: Nov 2015
Location: Norfolk,Virginia
Posts: 19
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Re: 70 C30 Brake upgrade
It's a factory power brakes so I figure I'll need an new proportioning valve. I'm trying to find a 73-87 one ton to use as a donor.
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03-08-2016, 07:57 PM
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#6 |
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Registered User
Join Date: Aug 2010
Location: Hoofddorp, the Netherlands
Posts: 582
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Re: 70 C30 Brake upgrade
I swapped the complete crossmember of a 73 2wd blazer. Had my share of problems, but now the brakes are where I want them to be
__________________
Feedback is always welcome! projects: 1969 Chevy C10 1950 GMC 100 1958 Chevy C60 Viking ratrod |
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03-09-2016, 12:14 AM
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#7 |
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Registered User
Join Date: Apr 2007
Location: Foster Rhode Island
Posts: 1,176
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Re: 70 C30 Brake upgrade
Just did this swap from 78 C30 onto my 71 C 20 .work great, like its made for it. Having a hard time finding new dust/backing plates though. Old one's from the donor were pretty rusty.
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03-09-2016, 12:38 AM
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#8 |
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Senior Member
Join Date: Nov 2003
Location: Brookings, SD
Posts: 10,497
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Re: 70 C30 Brake upgrade
I used a 1975 c30 for my 1967 c30. It was a hydro boost system, works extremely well.
__________________
Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs. |
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03-09-2016, 10:56 AM
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#9 |
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Registered User
Join Date: Nov 2013
Location: Spring Hill,Fl
Posts: 223
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Re: 70 C30 Brake upgrade
I just bolted this up from a 1980 C30. Used a 1972 c30 brake booster,master cyl with correct bracket. Proportioning valve was from a 1985 k5 blazer.
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03-09-2016, 12:32 PM
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#10 |
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Registered User
Join Date: Mar 2015
Location: Utah
Posts: 750
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Re: 70 C30 Brake upgrade
I would say add hydroboost, it's not that much work, and the brakes work SO MUCH BETTER than vacuum brakes
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03-09-2016, 04:33 PM
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#11 | |
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Registered User
Join Date: Dec 2009
Location: bisbee, arizona
Posts: 1,529
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Re: 70 C30 Brake upgrade
Quote:
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03-09-2016, 08:19 PM
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#12 |
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Registered User
Join Date: Nov 2015
Location: Norfolk,Virginia
Posts: 19
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Re: 70 C30 Brake upgrade
Thank y'all a lot for the tips. Now I have to find a donor somewhere around my area.
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03-10-2016, 12:39 AM
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#13 |
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Registered User
Join Date: Apr 2007
Location: Foster Rhode Island
Posts: 1,176
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Re: 70 C30 Brake upgrade
FYI the new rotors for the 73-87 spindles that take your bud wheels are still available from auto zone. around $94 plus tax each ,part#55025
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