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#1 |
Senior Member
![]() Join Date: Mar 2019
Location: Herculaneum MO (20 minutes south of St. Louis
Posts: 618
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C20 disc brake conversion advice
I am a new member here seeking advice on disc brake conversion kits.
I purchased a C20 with totally inoperable service brakes and so would like to just convert to disc. What I am looking for is advice from members who have performed this swap, what kit they may have used & why one kit might be better than another? Thanks
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67 C10 283 T5 swapped longbed fleetside = wife's daily driver 67 C20 292 (originally a 250)4speed longbed fleetside w/original wooden bed=my project truck 67 C10 283+.060 (so a 292 as well)T5 swapped longbed fleetside=my DD 72 C1500 Sierra Grande 350 TH350 longbed fleetside=wife's fair weather truck Can you tell we are fans of longbed fleetsides & 67s Chris |
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#2 | ||
"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,940
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Re: C20 disc brake conversion advice
Find a parting out or wrecked 71-72 C20 as they had disc brakes from the factory and swap everything over.
Gary
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'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
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#3 |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,397
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Re: C20 disc brake conversion advice
^ Yup. That would be the least expensive way to go.
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~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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#4 | |
Senior Member
![]() Join Date: Mar 2019
Location: Herculaneum MO (20 minutes south of St. Louis
Posts: 618
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Re: C20 disc brake conversion advice
Quote:
Then I would have a GM 14 bolt to address the lack of gearset availability for the Eaton axle & the rear brakes at the same time. Unless I am wrong then all I would need is a brake booster & master cylinder setup to fit the 67 (I don't think the 73up will fit) This would also give me other goodies like power steering Anything wrong with my thinking here?
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67 C10 283 T5 swapped longbed fleetside = wife's daily driver 67 C20 292 (originally a 250)4speed longbed fleetside w/original wooden bed=my project truck 67 C10 283+.060 (so a 292 as well)T5 swapped longbed fleetside=my DD 72 C1500 Sierra Grande 350 TH350 longbed fleetside=wife's fair weather truck Can you tell we are fans of longbed fleetsides & 67s Chris Last edited by 67 twins; 03-13-2019 at 01:21 AM. |
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#5 |
Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: C20 disc brake conversion advice
Take the whole front crossmember from a square body. Drill holes where necessary. With disc you'll want power assist. The square body vacuum booster isn't a bolt in. Hydraboost is a worthy addition with a little fabrication.
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My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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#6 |
Registered User
Join Date: Jul 2016
Location: Elkhart, Indiana
Posts: 292
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Re: C20 disc brake conversion advice
If you replace just the ball joints, the control arms are similar enough to work. I'd find a square body knuckle and use all of its brake parts. I'd recommend switching to power brakes as well, it'll be safer in the long run. I put all 1979 C20 brake parts on a '68 C20 a while back, just had to change ball joints to make it work. It's a pretty simple swap as long as you buy all the parts you need.
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1967 Chevy C20 to K20 Conversion "Simply Toxic" http://67-72chevytrucks.com/vboard/s...d.php?t=749409 1971 Chevy C20 Custom Camper LS Swap http://67-72chevytrucks.com/vboard/s...d.php?t=763775 |
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#7 |
Registered User
Join Date: Jun 2013
Location: Somewhere
Posts: 3,076
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Re: C20 disc brake conversion advice
My understanding is 71-87 trucks and up to 91 Blazers and Suburbans (still squares). Snag the whole thing crossmember and all. Bolt in drill a few holes.
There are tons of squares in scrapyards untouched because they made them for so long. |
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