Difference between K20 and K30? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Number21 · 02-22-2012, 01:05 AM

I'm just curious here, what would be the difference between my '73 K20 and a K30? My K20 is a camper special with the big 14 bolt rear end. What else does a SRW one ton have that my truck doesn't?

80SPORT · 02-22-2012, 01:11 AM

Frame...springs(rear mount width different on 1 ton)....and the big one ....K20 has a dana 44 in front...K30 has dana 60

andrewmp6 · 02-22-2012, 02:47 AM

I believe the k30 could be 14 bolt or dana 60 in the rear of it.

**GM72K10** · 02-22-2012, 07:08 AM

Quote:

Originally Posted by andrewmp6

I believe the k30 could be 14 bolt or dana 60 in the rear of it.

no dana 60s in rears of K30s, K30 duallys had 14FF or Dana 70s in rear, K30 not avail until 1977.

**special-K** · 02-22-2012, 08:53 AM

K/30s came with clearance lamps on cab and tailgate.

Eyegore · 02-22-2012, 05:57 PM

10

Cheng · 02-22-2012, 07:20 PM

Rear Brakes
K20 L/D 11.15x2.75"
K20 H/D 13x2.5"
K30 13x3.5"

Rear Springs
K20 L/D 2000lb/ea
K20 H/D 3000lb/ea
K30 3500lb/ea

Frames
K20 Light Duty Frame Section Modulus is 3.88
K20 Heavy Duty Frame Section Modulus is 4.53
K30 Frame Section Modulus is 6.14

02-22-2012, 01:05 AM	#1
Number21 Registered User Join Date: Aug 2009 Location: Oregon Posts: 611	Difference between K20 and K30? I'm just curious here, what would be the difference between my '73 K20 and a K30? My K20 is a camper special with the big 14 bolt rear end. What else does a SRW one ton have that my truck doesn't? __________________ '73 K20 Cheyenne Super Camper Special 350/TH350/NP205 sittin' on 33's. You can set my truck on fire and roll it down a hill, and I still wouldn't trade it for a Coupe de Ville.

02-22-2012, 01:11 AM	#2
80SPORT Registered User Join Date: Mar 2008 Location: red deer alberta Posts: 777	Re: Difference between K20 and K30? Frame...springs(rear mount width different on 1 ton)....and the big one ....K20 has a dana 44 in front...K30 has dana 60

02-22-2012, 02:47 AM	#3
andrewmp6 Registered User Join Date: Jan 2009 Location: Louisville,Ky Posts: 5,811	Re: Difference between K20 and K30? I believe the k30 could be 14 bolt or dana 60 in the rear of it.

02-22-2012, 08:53 AM	#5
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,859	Re: Difference between K20 and K30? K/30s came with clearance lamps on cab and tailgate. __________________ "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 ~

02-22-2012, 05:57 PM	#6
Eyegore What Hump? Join Date: Apr 2003 Location: New River AZ Posts: 2,009	Re: Difference between K20 and K30? 10 __________________ Lil red 86 c-10 99 Sub 78 Camper Special w/ 454

02-22-2012, 07:20 PM	#7
Cheng Registered User Join Date: Dec 2011 Location: Jacksonville, FL Posts: 74	Re: Difference between K20 and K30? Rear Brakes K20 L/D 11.15x2.75" K20 H/D 13x2.5" K30 13x3.5" Rear Springs K20 L/D 2000lb/ea K20 H/D 3000lb/ea K30 3500lb/ea Frames K20 Light Duty Frame Section Modulus is 3.88 K20 Heavy Duty Frame Section Modulus is 4.53 K30 Frame Section Modulus is 6.14 __________________ If it wasn't for the last minute, nothing would ever get done. 1953 3800 - SRW C&C Dump - 216/SM420 1985 K30 Scottsdale - SRW - 6.2/SM465/NP205 (Sold)



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