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07-02-2013, 03:11 PM | #1 |
Ridin' Dirty
Join Date: Oct 2009
Location: Ardrossan Alberta Canada
Posts: 2,193
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Pops 1970 C20 Suburban
I just bought this C20 Suburban in the hopes of using it as a daily driver. It was redone in 2003 and then parked for 10 years. It's got the factory 396 (402) and a Turbo 400 tranny.
I want to convert it to a 1/2ton and I'm leaning towards going with 6 lug instead of 5. The donor rear axle I have is 6 lug and I wouldn't mind running 6 lug GM rally wheels on it. So since I want disc brakes in the front, but with 6 lug rotors, can I piece that together with stock parts instead of ordering the kit? I know some 1992 Chevy 2500 2wd trucks came with 6 lug instead of 8, just wondering if I could use those rotors on a spindle that would work with my control arms, or do need to change control arms too, or am I better off just buying a kit? I'm thinking of doing about a 3" drop on the front, but don't want 3" drop spindles if my 15" rims will hit them. Maybe a 2" spindle and cut a loop off the coil..
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1978 C3500 Crewcab (Project) 1979 C2500 Crewcab (Driver/project) 1988 R2500 Crewcab (Driver) 1988 V3500 Crewcab 1988 R2500 Crewcab (Mint, Ex Fire Dept) 1968 Chev Suburban (4x4 conversion) LINK 1970 Chev C20 Suburban (driver/cruiser)LINK 2005 Impala (Incognito vehicle) 2004 Yukon XL Denali (Kid hauler) 1947 Case tractor Facebook Page(1000's of pictures of GM cars and trucks organized into albums) YouTube Channel |
07-02-2013, 03:13 PM | #2 |
Ridin' Dirty
Join Date: Oct 2009
Location: Ardrossan Alberta Canada
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Re: Pops 1970 C20 Suburban
Crusty ol big block..
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1978 C3500 Crewcab (Project) 1979 C2500 Crewcab (Driver/project) 1988 R2500 Crewcab (Driver) 1988 V3500 Crewcab 1988 R2500 Crewcab (Mint, Ex Fire Dept) 1968 Chev Suburban (4x4 conversion) LINK 1970 Chev C20 Suburban (driver/cruiser)LINK 2005 Impala (Incognito vehicle) 2004 Yukon XL Denali (Kid hauler) 1947 Case tractor Facebook Page(1000's of pictures of GM cars and trucks organized into albums) YouTube Channel |
07-02-2013, 03:20 PM | #3 |
Ridin' Dirty
Join Date: Oct 2009
Location: Ardrossan Alberta Canada
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Re: Pops 1970 C20 Suburban
There was a huge chunk of bondo missing from the tailgate, so I spent a few hours grinding it down to bare metal..
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1978 C3500 Crewcab (Project) 1979 C2500 Crewcab (Driver/project) 1988 R2500 Crewcab (Driver) 1988 V3500 Crewcab 1988 R2500 Crewcab (Mint, Ex Fire Dept) 1968 Chev Suburban (4x4 conversion) LINK 1970 Chev C20 Suburban (driver/cruiser)LINK 2005 Impala (Incognito vehicle) 2004 Yukon XL Denali (Kid hauler) 1947 Case tractor Facebook Page(1000's of pictures of GM cars and trucks organized into albums) YouTube Channel |
07-02-2013, 04:30 PM | #4 |
Registered User
Join Date: Jan 2007
Location: Keizer, Oregon
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Re: Pops 1970 C20 Suburban
I tried to piece it together and finally gave up and bought the rotors from CCP. The problems I ran into with the light 3/4 rotors is the offset on the spindle kept the caliper from fitting over correctly. plus I think the seal didn't work either.
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1968 K10 burb- on it's way to being C10 sporting a 454 th400 and LTZ 20's 1995 K2500 Burb as daily driver 350 with 193K miles 1994 K1500 Silverado ECSB building a TBI 350 for it 330 horse |
07-02-2013, 08:35 PM | #5 |
Ridin' Dirty
Join Date: Oct 2009
Location: Ardrossan Alberta Canada
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Re: Pops 1970 C20 Suburban
I'm not 100% set on 6 lug. I could do 5 lug too
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1978 C3500 Crewcab (Project) 1979 C2500 Crewcab (Driver/project) 1988 R2500 Crewcab (Driver) 1988 V3500 Crewcab 1988 R2500 Crewcab (Mint, Ex Fire Dept) 1968 Chev Suburban (4x4 conversion) LINK 1970 Chev C20 Suburban (driver/cruiser)LINK 2005 Impala (Incognito vehicle) 2004 Yukon XL Denali (Kid hauler) 1947 Case tractor Facebook Page(1000's of pictures of GM cars and trucks organized into albums) YouTube Channel |
07-03-2013, 11:56 AM | #6 |
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Re: Pops 1970 C20 Suburban
I think if you're going to go to 1/2 ton with discs it would be easiest to go 5 lug and use stock parts. It's easier to convert the rear diff to 5 lug than try to piece 6 lug discs. Let alone when you need to replace something you can get the parts at a parts store instead of online order to get parts
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"Some Days Chickens And Some Days Feathers" Dale XNGH ECV Sam Brannan 1004 R.I.P. 67ChevyRedneck R.I.P. Grumpy Old Man R.I.P. FleetsidePaul Last edited by Ol Blue K20; 07-03-2013 at 11:58 AM. Reason: add |
07-03-2013, 10:34 PM | #7 |
Ridin' Dirty
Join Date: Oct 2009
Location: Ardrossan Alberta Canada
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Re: Pops 1970 C20 Suburban
Is it easy to swap my rear half ton 6 lug axles to 5 lug?
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1978 C3500 Crewcab (Project) 1979 C2500 Crewcab (Driver/project) 1988 R2500 Crewcab (Driver) 1988 V3500 Crewcab 1988 R2500 Crewcab (Mint, Ex Fire Dept) 1968 Chev Suburban (4x4 conversion) LINK 1970 Chev C20 Suburban (driver/cruiser)LINK 2005 Impala (Incognito vehicle) 2004 Yukon XL Denali (Kid hauler) 1947 Case tractor Facebook Page(1000's of pictures of GM cars and trucks organized into albums) YouTube Channel |
07-05-2013, 02:01 AM | #8 |
Ridin' Dirty
Join Date: Oct 2009
Location: Ardrossan Alberta Canada
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Re: Pops 1970 C20 Suburban
Ok! New development! My buddy Dave, (72LOBURB) is giving me a 5 lug rear diff for free. So I'm now heading in the 5 lug direction for the front end 1/2 ton disc brake conversion.
I may have a line on an 86 GMC 1/2 ton 2wd parts truck. Can I use the 1986 control arms without changing the whole C20 crossmember?
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1978 C3500 Crewcab (Project) 1979 C2500 Crewcab (Driver/project) 1988 R2500 Crewcab (Driver) 1988 V3500 Crewcab 1988 R2500 Crewcab (Mint, Ex Fire Dept) 1968 Chev Suburban (4x4 conversion) LINK 1970 Chev C20 Suburban (driver/cruiser)LINK 2005 Impala (Incognito vehicle) 2004 Yukon XL Denali (Kid hauler) 1947 Case tractor Facebook Page(1000's of pictures of GM cars and trucks organized into albums) YouTube Channel |
07-05-2013, 08:17 AM | #9 | |
67-72 parts collector,…
Join Date: Nov 2002
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Re: Pops 1970 C20 Suburban
Quote:
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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07-05-2013, 12:35 PM | #10 | |
A day late and $1 short...
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Re: Pops 1970 C20 Suburban
Quote:
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Buck Instagram: C10_ustacould 1963 SWB Fleet Side 528 Desert Beige Milly 1967 SWB Step Side 506 Medium Blue The Old Girl 1968 SWB Fleet Side 503 Light Green Ellie SOLD 1965 SWB Fleet Side 507 Light Blue Prescription Strength SOLD 1971 SWB Fleet Side 521 White Shiro SOLD 1968 SWB Step Side 503 Light Green My Old Farm Truck SOLD |
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07-05-2013, 01:50 PM | #11 |
Ridin' Dirty
Join Date: Oct 2009
Location: Ardrossan Alberta Canada
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Re: Pops 1970 C20 Suburban
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1978 C3500 Crewcab (Project) 1979 C2500 Crewcab (Driver/project) 1988 R2500 Crewcab (Driver) 1988 V3500 Crewcab 1988 R2500 Crewcab (Mint, Ex Fire Dept) 1968 Chev Suburban (4x4 conversion) LINK 1970 Chev C20 Suburban (driver/cruiser)LINK 2005 Impala (Incognito vehicle) 2004 Yukon XL Denali (Kid hauler) 1947 Case tractor Facebook Page(1000's of pictures of GM cars and trucks organized into albums) YouTube Channel |
07-05-2013, 01:53 PM | #12 |
Ridin' Dirty
Join Date: Oct 2009
Location: Ardrossan Alberta Canada
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Re: Pops 1970 C20 Suburban
I have no desire to remove the crossmember if I don't have to. Do you guys know if I have to change both upper and lower control arms to make the 86 style spindles work?
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1978 C3500 Crewcab (Project) 1979 C2500 Crewcab (Driver/project) 1988 R2500 Crewcab (Driver) 1988 V3500 Crewcab 1988 R2500 Crewcab (Mint, Ex Fire Dept) 1968 Chev Suburban (4x4 conversion) LINK 1970 Chev C20 Suburban (driver/cruiser)LINK 2005 Impala (Incognito vehicle) 2004 Yukon XL Denali (Kid hauler) 1947 Case tractor Facebook Page(1000's of pictures of GM cars and trucks organized into albums) YouTube Channel |
07-05-2013, 01:59 PM | #13 | |
67-72 parts collector,…
Join Date: Nov 2002
Location: Mid-MO
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Re: Pops 1970 C20 Suburban
Quote:
You can reuse the original upper a-arms,... but you would have to swap in 73-87 1/2-ton balljoints. So use the '86 a-arms. (they also have rubber bushings instead of steel cross-shaft bushings) Lowers definitely have to be swapped. C20 lowers have a bigger balljoint hole in them,... than the C10 version. Also use all the steering linkage from the '86.
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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07-05-2013, 02:01 PM | #14 |
Ridin' Dirty
Join Date: Oct 2009
Location: Ardrossan Alberta Canada
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Re: Pops 1970 C20 Suburban
This helps a lot! Thank you so much!
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1978 C3500 Crewcab (Project) 1979 C2500 Crewcab (Driver/project) 1988 R2500 Crewcab (Driver) 1988 V3500 Crewcab 1988 R2500 Crewcab (Mint, Ex Fire Dept) 1968 Chev Suburban (4x4 conversion) LINK 1970 Chev C20 Suburban (driver/cruiser)LINK 2005 Impala (Incognito vehicle) 2004 Yukon XL Denali (Kid hauler) 1947 Case tractor Facebook Page(1000's of pictures of GM cars and trucks organized into albums) YouTube Channel |
07-05-2013, 10:16 PM | #15 |
Ridin' Dirty
Join Date: Oct 2009
Location: Ardrossan Alberta Canada
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Re: Pops 1970 C20 Suburban
Picked up my donor "truck" for my 1/2 ton rear diff. (71-72 GMC with a 12 bolt)
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1978 C3500 Crewcab (Project) 1979 C2500 Crewcab (Driver/project) 1988 R2500 Crewcab (Driver) 1988 V3500 Crewcab 1988 R2500 Crewcab (Mint, Ex Fire Dept) 1968 Chev Suburban (4x4 conversion) LINK 1970 Chev C20 Suburban (driver/cruiser)LINK 2005 Impala (Incognito vehicle) 2004 Yukon XL Denali (Kid hauler) 1947 Case tractor Facebook Page(1000's of pictures of GM cars and trucks organized into albums) YouTube Channel |
07-06-2013, 01:44 PM | #16 |
Ridin' Dirty
Join Date: Oct 2009
Location: Ardrossan Alberta Canada
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Re: Pops 1970 C20 Suburban
And my $500 disc brake donor truck! Also happens to come with a 305 that runs great and a 700R4 that I'll keep for a different project.
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1978 C3500 Crewcab (Project) 1979 C2500 Crewcab (Driver/project) 1988 R2500 Crewcab (Driver) 1988 V3500 Crewcab 1988 R2500 Crewcab (Mint, Ex Fire Dept) 1968 Chev Suburban (4x4 conversion) LINK 1970 Chev C20 Suburban (driver/cruiser)LINK 2005 Impala (Incognito vehicle) 2004 Yukon XL Denali (Kid hauler) 1947 Case tractor Facebook Page(1000's of pictures of GM cars and trucks organized into albums) YouTube Channel |
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