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#1 |
Registered User
Join Date: Dec 2012
Location: Lompoc CA
Posts: 118
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2/4 Drop Complete C-20
Well I took the body lift off my 2WD C-20 and dropped it 2 inches in the front and 4 inches in the rear. Installed new shocks also. Definitely rides better. Previous owner definitely took some shortcuts..... Also installed new valve covers. Wondering if the 5 lug axle kits work on the C-20 trucks????
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#2 |
Registered User
Join Date: Jul 2014
Location: Mora MN
Posts: 172
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Re: 2/4 Drop Complete C-20
Looking good!!! 😄
__________________
1968 Custom Camper C/20, rebuilt original 327 with 350 hp., turbo 400 with shift kit, factory AC truck, original patina rust free paint from Oregon, 2/4 lowering springs + 1" blocks, GM 2500 8 bolt rally's with dually center caps with Firestone Destination 245/75-R16's. (My 50th birthday present from my wife!!!) |
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#3 |
Registered User
Join Date: Sep 2013
Location: Gonzales, La
Posts: 1,441
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Re: 2/4 Drop Complete C-20
Looks good. A 2/4 on a LWB looks fabulous.
__________________
MyToys: Goldilocks the "Ol School Survivor" 1968 C10, SWB Stepside, 08/15 TOTM, 250 CI 6 cylinder, 3 on the tree, 3.73 rear, 3/5 static drop, 23,500 original miles. Samson the 1970 CST10, LWB, 462Ci, Turbo 350 tranny, 3.08 rear gear, PB, PS, A/C, AM/FM, 2/4 Drop. Brutus the 1998 Camaro Z28, 33,500 original miles, LS1, 519 RWHP/497 RWTQ. Member of the Louisiana Classic Truck Club, LCTC Member of the Louisiana C10 Club Member of the Baton Rouge Drifters Car Club |
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#4 |
Registered User
Join Date: Dec 2012
Location: Lompoc CA
Posts: 118
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Re: 2/4 Drop Complete C-20
I am making myself a shop truck. Got to get some art work on the doors. Truck will be my weekend driver to car shows and car gatherings...
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#5 |
Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,717
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Re: 2/4 Drop Complete C-20
Keep the 8 lug. The 5 lug kits can be made to work on the front and new axle required for the back. If you work the truck, you will be glad for the HD rear axle.
__________________
44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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#6 |
Registered User
Join Date: Dec 2012
Location: Lompoc CA
Posts: 118
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Re: 2/4 Drop Complete C-20
Thanks! Was just debating the swap this morning. Think I am going to find me some disc brakes for the front and just continue making a solid reliable truck.
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#7 |
Registered User
Join Date: Jun 2013
Location: Norman, OK
Posts: 52
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Re: 2/4 Drop Complete C-20
You should look at swapping a front end (suspension, brakes, crossmember, and steering components) from a 73-87 3/4 ton pickup or suburban. You will gain disc brakes, power steering, and a sway bar. Much cheaper than a disc upgrade kit and you only have to drill a few new holes in the frame.
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#8 |
Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,717
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Re: 2/4 Drop Complete C-20
I did a disc swap on my '70 GMC Sierra Grande. I think ball joints are same or '73 and up work on the 3/4 ton trucks?
Double check, but I think this is an easier swap than the 1/2 ton. For my swap I bought a 70 that someone had already converted then swapped those parts onto my truck so I have no idea what the donor was. Great mod though. I just finished disc swap on 69 short step I have. Did I mention I HATE front drums for a road vehicle?
__________________
44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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#9 |
Registered User
Join Date: Jan 2004
Location: Whitehorse YK Canada
Posts: 2,651
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Re: 2/4 Drop Complete C-20
Very nice.
A few questions.... Did you replace coil springs for the drop? Did you have to relocate the shock mounts? Are the new shocks shorter? How long did it take you to do the drop? Nice wheels, what are they?
__________________
Blaine 59 GMC 9314 a.k.a. Whoopee 68 C20 50th Anniversary a.k.a. The Rat http://www.flickr.com/photos/northerngmc/ http://www.members.tripod.com/P-wee/index_032.htm 1.61803 is one H of a lot better than 3.14159, no really it is! |
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#10 |
Registered User
Join Date: Dec 2012
Location: Lompoc CA
Posts: 118
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Re: 2/4 Drop Complete C-20
Did you replace coil springs for the drop?
I replaced the coil springs with classic performance springs I ordered through Summit Racing. Did you have to relocate the shock mounts? The 4 inch drop did not require me to relocate but I heard 5 inch drop is where things start to change. Are the new shocks shorter? Yes the new shocks are shorter and also from CPP How long did it take you to do the drop? Front took about 20 minutes each side... rear was about 30 total for both sides... not complicated at all. Nice wheels, what are they? The wheels are just regular circle track style black wheels. I got a set of stock 16's out for powdercoating right now... |
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#11 |
Registered User
Join Date: Dec 2012
Location: Lompoc CA
Posts: 118
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Re: 2/4 Drop Complete C-20
I found me a 76 3/4 ton to harvest the front end parts...
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#12 |
Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,717
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Re: 2/4 Drop Complete C-20
Ball joints are different on Rock Auto, I just checked. Most likely can replace your 1970 ones with the 1976 ball joints. Otherwise, just swap in the control arms as well.
__________________
44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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#13 |
Registered User
Join Date: Dec 2012
Location: Lompoc CA
Posts: 118
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Re: 2/4 Drop Complete C-20
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#14 | |
Registered User
Join Date: Jan 2004
Location: Whitehorse YK Canada
Posts: 2,651
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Re: 2/4 Drop Complete C-20
Quote:
__________________
Blaine 59 GMC 9314 a.k.a. Whoopee 68 C20 50th Anniversary a.k.a. The Rat http://www.flickr.com/photos/northerngmc/ http://www.members.tripod.com/P-wee/index_032.htm 1.61803 is one H of a lot better than 3.14159, no really it is! |
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#15 |
Registered User
Join Date: Dec 2012
Location: Lompoc CA
Posts: 118
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Re: 2/4 Drop Complete C-20
I called them to verify the applications. The ride is awesome......
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#16 |
Registered User
Join Date: Dec 2012
Location: Lompoc CA
Posts: 118
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Re: 2/4 Drop Complete C-20
To be honest the suspension on my C-20 is not that much different than what was on my 69 C-10.....
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#17 |
Registered User
Join Date: Jun 2011
Location: ventura, california
Posts: 24
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Re: 2/4 Drop Complete C-20
Did you have to C-Notch the frame?
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#18 |
Registered User
Join Date: Dec 2012
Location: Lompoc CA
Posts: 118
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Re: 2/4 Drop Complete C-20
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#19 |
Registered User
Join Date: Jun 2011
Location: ventura, california
Posts: 24
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Re: 2/4 Drop Complete C-20
Thank you! That answer is all that was holding me back from doing the 2-4 drop on my own.
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