Have a question about frames? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

manimal · 07-22-2013, 09:28 PM

specifically the ones circled in RED. What is the "C6P"? There are 2 different frames for a c20 and k20 131" wb...I dont understand?

79Betty · 07-22-2013, 09:32 PM

Goin to take a stab in the dark, i'd say "heavy half" or "big 10" frames... Seems like they would make sence to be thicker and beefier know what i mean?
Posted via Mobile Device

Keith Seymore · 07-22-2013, 10:20 PM

More like a "heavy 3/4" -

C6P is a heavy duty frame/suspension option that bumps the GVW on a 20 series from 7200 to 8600 lbs.

K

csdineley · 07-22-2013, 10:25 PM

C6P as far as I know is GM's H.D. suspension for 3/4 ton trucks. So kind of like a "heavy half" or "Big 10" for the 3/4 ton trucks.

Keith Seymore · 07-22-2013, 10:59 PM

Agree. Couldn't have said it better myself.

K

manimal · 07-22-2013, 11:00 PM

Thank YOU EVERYONE!

Rubble · 07-23-2013, 12:10 AM

So this would be the difference in semi float vs full float 14 bolts on these trucks too then??
Posted via Mobile Device

KrazyRay · 07-23-2013, 12:23 AM

I call the semi float a 5/8 ton.

Rubble · 07-23-2013, 12:47 AM

Quote:

Originally Posted by KrazyRay

I call the semi float a 5/8 ton.

That's what we always called the heavy half/ big 10s is 5/8 ton.
Posted via Mobile Device
Posted via Mobile Device

Desert1957 · 07-23-2013, 01:32 AM

Quote:

Originally Posted by manimal

specifically the ones circled in RED. What is the "C6P"? There are 2 different frames for a c20 and k20 131" wb...I dont understand?

Here, Maybe this will help. Read my post #16 on this thread.

http://67-72chevytrucks.com/vboard/s...ghlight=frames

Desert

tucsonjwt · 07-23-2013, 07:27 AM

My 83 C20 camper special is rated at 8600 GVWR.

Keith Seymore · 07-23-2013, 07:43 AM

Quote:

Originally Posted by Desert1957

Here, Maybe this will help. Read my post #16 on this thread.

http://67-72chevytrucks.com/vboard/s...ghlight=frames

Desert

What's the GVW on your 3/4 ton? (ie, 7200 vs 8600).

The point of this thread was that there are two different frames within the 3/4 ton family (not the difference between 1/2 ton and 3/4 ton) - so slightly different question.

K

Desert1957 · 07-23-2013, 10:35 AM

Quote:

Originally Posted by Keith Seymore

What's the GVW on your 3/4 ton? (ie, 7200 vs 8600).

The point of this thread was that there are two different frames within the 3/4 ton family (not the difference between 1/2 ton and 3/4 ton) - so slightly different question.

K

Keith,

Yes I realize that. I was showing another thread where this frame chart came from.

My 83 is 8600 GVW , I thought the designation " C6P " was a Crewcab or 3+3 frame

Desert

manimal · 07-23-2013, 12:03 PM

That is what I was thinking too was C(cab) 6P(6 passenger)...but maybe I am wrong.

csdineley · 07-23-2013, 12:04 PM

Nope my standard cab has the c6p option

manimal · 07-23-2013, 12:05 PM

Scratch that...because it is listed for the 131.5" wb...a crewcab is 164"

right? So yes I get it now...sorry.

manimal · 07-23-2013, 12:07 PM

Another question...SAME topic, is that chart for all years 73-91 squares? I am curious about a '76 K20

Keith Seymore · 07-23-2013, 12:38 PM

Quote:

Originally Posted by Desert1957

Keith,

Yes I realize that. I was showing another thread where this frame chart came from.

My 83 is 8600 GVW , I thought the designation " C6P " was a Crewcab or 3+3 frame

Desert

Ah - thanks. Nope - not crew or 3+3, as evidenced by your chart which shows it only with C20903 (3/4 ton reg cab 2wd) and K20903 (3/4 ton reg cab 4wd).

Keith Seymore · 07-23-2013, 12:39 PM

Quote:

Originally Posted by manimal

That is what I was thinking too was C(cab) 6P(6 passenger)...but maybe I am wrong.

Nope - it's just the randomly created RPO code, like C60, or B96 or Z28 or Z71 or ZL1.

The alpha-numeric was just next in line when they created the content.

It can't be dissected as you are suggesting.

K

Keith Seymore · 07-23-2013, 12:45 PM

Quote:

Originally Posted by manimal

Another question...SAME topic, is that chart for all years 73-91 squares? I am curious about a '76 K20

This

http://www.gmheritagecenter.com/docs...olet-Truck.pdf

does not show C6P as available in 1976.

So my interpretation would be "no".

K

Keith Seymore · 07-23-2013, 12:49 PM

Quote:

Originally Posted by Keith Seymore

Ah - thanks. Nope -

Quote:

Originally Posted by Keith Seymore

Nope - it's just the randomly created RPO code,

Quote:

Originally Posted by Keith Seymore

So my interpretation would be "no".

Geez, guys - sorry for being such a "Negative Nelly" today...

(lol)

K

manimal · 07-23-2013, 01:02 PM

Again, THANK YOU.

07-22-2013, 09:32 PM	#2
79Betty Registered User Join Date: Jan 2013 Location: Jasper, IN Posts: 948	Re: Have a question about frames? Goin to take a stab in the dark, i'd say "heavy half" or "big 10" frames... Seems like they would make sence to be thicker and beefier know what i mean? Posted via Mobile Device __________________ When in doubt, throttle it out! 1974 Chevrolet Custom K20 2005 Ford Ranger Edge 1985 Chevrolet Custom Deluxe C10

07-22-2013, 10:20 PM	#3
Keith Seymore Registered User Join Date: May 2009 Location: Motor City Posts: 9,210	Re: Have a question about frames? More like a "heavy 3/4" - C6P is a heavy duty frame/suspension option that bumps the GVW on a 20 series from 7200 to 8600 lbs. K __________________ Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/

07-22-2013, 10:25 PM	#4
csdineley Registered User Join Date: Feb 2012 Location: Morgantown, Wv Posts: 294	Re: Have a question about frames? C6P as far as I know is GM's H.D. suspension for 3/4 ton trucks. So kind of like a "heavy half" or "Big 10" for the 3/4 ton trucks.

07-22-2013, 10:59 PM	#5
Keith Seymore Registered User Join Date: May 2009 Location: Motor City Posts: 9,210	Re: Have a question about frames? Agree. Couldn't have said it better myself. K __________________ Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/

07-22-2013, 11:00 PM	#6
manimal Registered User Join Date: Oct 2006 Location: Southern Kalifornia Posts: 3,066	Re: Have a question about frames? Thank YOU EVERYONE! __________________ ------------------------------------------------------ -Lance 2000 Chevy C2500, 5.7, 4L80e 1999 Suburban K2500, 7.4, 4L80e 1980 Camaro..son's car...PROJECT

07-22-2013, 09:28 PM	#1
manimal Registered User Join Date: Oct 2006 Location: Southern Kalifornia Posts: 3,066	Have a question about frames? specifically the ones circled in RED. What is the "C6P"? There are 2 different frames for a c20 and k20 131" wb...I dont understand? Attached Images __________________ ------------------------------------------------------ -Lance 2000 Chevy C2500, 5.7, 4L80e 1999 Suburban K2500, 7.4, 4L80e 1980 Camaro..son's car...PROJECT

07-23-2013, 12:10 AM	#7
Rubble Registered User Join Date: Feb 2012 Location: Big Valley. Alberta Posts: 674	Re: Have a question about frames? So this would be the difference in semi float vs full float 14 bolts on these trucks too then?? Posted via Mobile Device __________________ 1977 Chev C30 454/465/14ff DRW 1974 Chev C20.350/465/14ff " Rock n Roll ain't noise pollution"

07-23-2013, 12:23 AM	#8
KrazyRay Registered User Join Date: Jun 2009 Location: Oroville, CA Posts: 4,827	Re: Have a question about frames? I call the semi float a 5/8 ton.

07-23-2013, 07:27 AM	#11
tucsonjwt Registered User Join Date: Jul 2007 Location: Tucson, AZ Posts: 3,188	Re: Have a question about frames? My 83 C20 camper special is rated at 8600 GVWR.

07-23-2013, 12:03 PM	#14
manimal Registered User Join Date: Oct 2006 Location: Southern Kalifornia Posts: 3,066	Re: Have a question about frames? That is what I was thinking too was C(cab) 6P(6 passenger)...but maybe I am wrong. __________________ ------------------------------------------------------ -Lance 2000 Chevy C2500, 5.7, 4L80e 1999 Suburban K2500, 7.4, 4L80e 1980 Camaro..son's car...PROJECT

07-23-2013, 12:04 PM	#15
csdineley Registered User Join Date: Feb 2012 Location: Morgantown, Wv Posts: 294	Re: Have a question about frames? Nope my standard cab has the c6p option

07-23-2013, 12:05 PM	#16
manimal Registered User Join Date: Oct 2006 Location: Southern Kalifornia Posts: 3,066	Re: Have a question about frames? Scratch that...because it is listed for the 131.5" wb...a crewcab is 164" right? So yes I get it now...sorry. __________________ ------------------------------------------------------ -Lance 2000 Chevy C2500, 5.7, 4L80e 1999 Suburban K2500, 7.4, 4L80e 1980 Camaro..son's car...PROJECT

07-23-2013, 12:07 PM	#17
manimal Registered User Join Date: Oct 2006 Location: Southern Kalifornia Posts: 3,066	Re: Have a question about frames? Another question...SAME topic, is that chart for all years 73-91 squares? I am curious about a '76 K20 __________________ ------------------------------------------------------ -Lance 2000 Chevy C2500, 5.7, 4L80e 1999 Suburban K2500, 7.4, 4L80e 1980 Camaro..son's car...PROJECT

07-23-2013, 01:02 PM	#22
manimal Registered User Join Date: Oct 2006 Location: Southern Kalifornia Posts: 3,066	Re: Have a question about frames? Again, THANK YOU. __________________ ------------------------------------------------------ -Lance 2000 Chevy C2500, 5.7, 4L80e 1999 Suburban K2500, 7.4, 4L80e 1980 Camaro..son's car...PROJECT



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