How do i tell if frame c10/c20 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Dodge68charger · 01-30-2016, 02:35 AM

How do i tell if my 1969 truck frame is a c10 or c20. The vin says 1/2 ton but its got leaf springs in the back. Does that matter. Thanks
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Aus69c20 · 01-30-2016, 03:11 AM

I don't know how you can tell the differences. but both c10 and c20's came with coil springs and I think leafs were optional.

bigdog55 · 01-30-2016, 08:38 AM

On chevy the leaf springs were optional and on GMC the trailering arms were optional.

**special-K** · 01-30-2016, 10:49 AM

The rear cab mounts are located lower on the fame than 1/2t, on 2wd. C/10s are unique in that area

'68 Newtricks · 01-30-2016, 10:59 AM

Quote:

Originally Posted by special-K

The rear cab mounts are located lower on the fame than 1/2t, on 2wd. C/10s are unique in that area

yep, the rear cab cushion is about 3-4" tall on 3/4 2wd. The 1/2 2wd is about 1.25". I don't know anything about 4x4, never had.

57taskforce · 01-30-2016, 11:41 AM

Quote:

Originally Posted by '68 Newtricks

yep, the rear cab cushion is about 3-4" tall on 3/4 2wd. The 1/2 2wd is about 1.25". I don't know anything about 4x4, never had.

4x4 uses the same rear cushions as C/20-30.

'68 Newtricks · 01-31-2016, 01:48 AM

Also, I noticed the studs that hold the upper A-arms is 1/2" on the half ton while the 3/4 ton uses 9/16" studs.

snipescastle2 · 01-31-2016, 10:13 AM

I believe there are extra braces on the cross members also.
Ben

**Boog** · 01-31-2016, 11:57 AM

The frames are also different thicknesses between 1/2, 3/4 and 1 tons.

01-30-2016, 02:35 AM	#1
Dodge68charger Registered User Join Date: Jul 2014 Location: Washington Posts: 532	How do i tell if frame c10/c20 How do i tell if my 1969 truck frame is a c10 or c20. The vin says 1/2 ton but its got leaf springs in the back. Does that matter. Thanks Posted via Mobile Device

01-30-2016, 03:11 AM	#2
Aus69c20 Registered User Join Date: Jun 2015 Location: Melbourne, Australia Posts: 231	Re: How do i tell if frame c10/c20 I don't know how you can tell the differences. but both c10 and c20's came with coil springs and I think leafs were optional. __________________ John 69 c20, 396, th400, dana60, ps, ac

01-30-2016, 08:38 AM	#3
bigdog55 Registered User Join Date: Oct 2013 Location: TX Posts: 122	Re: How do i tell if frame c10/c20 On chevy the leaf springs were optional and on GMC the trailering arms were optional. __________________ Brian

01-30-2016, 10:49 AM	#4
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,862	Re: How do i tell if frame c10/c20 The rear cab mounts are located lower on the fame than 1/2t, on 2wd. C/10s are unique in that area __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

01-31-2016, 01:48 AM	#7
'68 Newtricks Registered User Join Date: Feb 2014 Location: Los Angeles area :( Posts: 499	Re: How do i tell if frame c10/c20 Also, I noticed the studs that hold the upper A-arms is 1/2" on the half ton while the 3/4 ton uses 9/16" studs. __________________ '68 C10 SWB '85 K30 Blazer

01-31-2016, 10:13 AM	#8
snipescastle2 Registered User Join Date: Mar 2009 Location: WARRENSBURG,MISSOURI,64093 Posts: 1,518	Re: How do i tell if frame c10/c20 I believe there are extra braces on the cross members also. Ben

01-31-2016, 11:57 AM	#9
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,103	Re: How do i tell if frame c10/c20 The frames are also different thicknesses between 1/2, 3/4 and 1 tons. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross



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