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06-22-2014, 08:57 PM | #1 |
Registered User
Join Date: Jun 2013
Location: anaheim, ca
Posts: 148
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1970 c20 rear disc brake swap
I have got my hands on a front end from a 72 chevy c20 to do the front disk brake swap on my 70 c20. But now im wondering what my options are for the rear drum brakes. Is there a kit I can get to convert the rear also? The rear is drum with 4.10 gearing.
Thanks, paul |
06-23-2014, 09:07 AM | #2 |
2WD Jimmy
Join Date: Mar 2005
Location: Davis County, Utah
Posts: 2,565
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Re: 1970 c20 rear disc brake swap
Do you just want the rear disks for grins? The front disk in conjunction with the power booster should get that truck to stop admirably.
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06-23-2014, 02:01 PM | #3 |
Registered User
Join Date: Aug 2011
Location: Dallas TX
Posts: 225
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Re: 1970 c20 rear disc brake swap
Just search the archives here with keywords "C20", "rear", "disc" ..lots of info back there about rear disc conversions for C/K20 & C/K30. The low-buck DIY kits use the 1973+ slip-off K20 front rotors in conjunction with the 1976/77/78 Cadillac ElDorado calipers (large enough to fit over the K20 1.25" thick rotors) ..assuming you can still find a set. There's actually a new DIY kit out now using a bracket that accomodates the later model rotors with the "drum in rotor" style parking brake;
http://www.ebay.com/itm/310679487802...T#ht_618wt_789 Last edited by viking427; 06-23-2014 at 02:17 PM. |
06-23-2014, 11:24 PM | #4 |
Registered User
Join Date: Jun 2013
Location: anaheim, ca
Posts: 148
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Re: 1970 c20 rear disc brake swap
Looks like if I go to rear disc I will have to get different rims. From my review of posts it seems that there is no way to keep the 8 lug rim size that I have now. Does that sound right?
thanks |
06-23-2014, 11:49 PM | #5 |
Registered User
Join Date: Aug 2011
Location: Dallas TX
Posts: 225
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Re: 1970 c20 rear disc brake swap
You'll need at least 16" dia. wheels to fit the factory gm 71-87 3/4 and 1 ton rotors, since they're about 12.5" in dia. + the caliper thickness. This would include the K20 rotors with the Cadi. calipers. Not sure about the late model drum-in-rotor hardware.
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06-23-2014, 11:56 PM | #6 |
Registered User
Join Date: Jun 2013
Location: anaheim, ca
Posts: 148
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Re: 1970 c20 rear disc brake swap
My current rims are 16.5, 8 lug. Dont think they will work with the rear disc upgrade.
thanks |
06-24-2014, 12:41 AM | #7 |
Registered User
Join Date: Jun 2014
Location: Piedmont, OK
Posts: 364
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Re: 1970 c20 rear disc brake swap
i have a disc upgrade on my rear axle and 16" wheels fit fine. so your 16.5's should work just fine as well.
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06-24-2014, 07:48 AM | #8 |
Roto Reuter thats the name...
Join Date: Feb 2010
Location: Darien, NY
Posts: 1,853
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Re: 1970 c20 rear disc brake swap
Did front disc conversion only on my 69 C20. Stops great. Not really considering doing rears at this point. However, there are kits out there for us 8-luggers. Check out Blackbird Customs.
__________________
~ Dan My 70 K10 SWB build:http://67-72chevytrucks.com/vboard/s...d.php?t=782232 My 71 SWB build:http://67-72chevytrucks.com/vboard/s...d.php?t=651394 1970 SWB Fleet K10 4X4, 5.3L LM7, 4L60E, Dakota Digital RTX, Vintage Air, Ididit tilt 1971 SWB Fleet C10 - Original SWB Arizona truck, new custom restoration project "Kick out your motor and drive while you're still alive - kick it out!" - Heart 1977 |
06-24-2014, 08:59 AM | #9 |
Senior Member
Join Date: Feb 2011
Location: Clovis Ca.
Posts: 632
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Re: 1970 c20 rear disc brake swap
here is a link http://blackbirdscustomtrucks.com/index7.html
__________________
I'm sorry I called you stupid. I thought you knew already. 67 C-20 Custom Camper 68 Nova 396 it does wheelies 2005 Buick Century the one the wife drives 1989 Toyota Tercel to drive when I can't put gas in the first 2. |
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