Differences between C10 and C20 cab mounts? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**mr48chev** · 05-08-2014, 02:20 PM

I need new cab mount bushings for my 71 GMC C20 and one site shows that they are all the same and LMC shows different pieces for the C20.

Does anyone know exactly what the differences are?

**LockDoc** · 05-08-2014, 03:41 PM

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The C-20 rear bushings are taller because the frame brackets sit lower on the frame.

LockDoc

boynton · 05-08-2014, 11:49 PM

Quote:

Originally Posted by LockDoc

-
The C-20 rear bushings are taller because the frame brackets sit lower on the frame.

LockDoc

yup I don't remember the exact difference, but about 2-3"

SS Tim · 05-09-2014, 12:07 AM

Might want to take a look at the factory manuals.

* VIN/Model Decoders
* Power Team Charts (engine/transmission/gear ratio)
* Post Your Pickup SPID Blazer SPID Suburban/Panel SPID
* RTFM ... Read The Factory Manuals... download 'em here

**mr48chev** · 05-09-2014, 11:28 AM

Thank, that clears that up pretty well.

mechanicalman · 07-21-2014, 03:36 AM

Quote:

Originally Posted by LockDoc

-
The C-20 rear bushings are taller because the frame brackets sit lower on the frame.

LockDoc

Thanks LockDoc, I'm ordering bushings for my C20 cab on my C10 frame so it seems I need only the C10 mounts for a good fit.

It's a 68 C10 chassis with a 68 C20 cab.

**CUSTOM/10** · 07-21-2014, 06:00 AM

I believe you'll find the cab is the same, it's the mounts on the frame that are mounted differently as LockDoc said. So you order the bushings for the frame.
So if you have a C10 frame & a C20 cab you order C10 bushings !

**LockDoc** · 07-21-2014, 11:07 AM

Quote:

Originally Posted by mechanicalman

Thanks LockDoc, I'm ordering bushings for my C20 cab on my C10 frame so it seems I need only the C10 mounts for a good fit.

It's a 68 C10 chassis with a 68 C20 cab.

Quote:

I believe you'll find the cab is the same, it's the mounts on the frame that are mounted differently as LockDoc said. So you order the bushings for the frame.
So if you have a C10 frame & a C20 cab you order C10 bushings!

That would be correct. The cabs are all the same the frame is the only difference....

LockDoc

**Classic Heartbeat** · 07-21-2014, 11:58 AM

The factory drawing for the C-KA10 is incorrect in the fact that they included the Ks in the mix. All 4X4s whether they are 1/2 ton or 3/4 ton had the taller rear cab mount pictured in the C-KA20/30 drawing. WES

05-08-2014, 02:20 PM	#1
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,638	Differences between C10 and C20 cab mounts? I need new cab mount bushings for my 71 GMC C20 and one site shows that they are all the same and LMC shows different pieces for the C20. Does anyone know exactly what the differences are? __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

05-08-2014, 03:41 PM	#2
LockDoc The Older Generation Join Date: Aug 2006 Location: Montezuma, Iowa Posts: 25,639	Re: Differences between C10 and C20 cab mounts? - The C-20 rear bushings are taller because the frame brackets sit lower on the frame. LockDoc __________________ Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 -

05-09-2014, 12:07 AM	#4
SS Tim Registered User Join Date: Aug 2010 Location: Edwards, CA Posts: 7,503	Re: Differences between C10 and C20 cab mounts? Might want to take a look at the factory manuals. * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID Blazer SPID Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Attached Images __________________ Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID Blazer SPID Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders Do you have a 1972 Plaid Pickup? Plaid Blazer ** Plaid Suburban

05-09-2014, 11:28 AM	#5
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,638	Re: Differences between C10 and C20 cab mounts? Thank, that clears that up pretty well. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

07-21-2014, 06:00 AM	#7
CUSTOM/10 Senior Member Join Date: May 2003 Location: Sandown, NH Posts: 2,833	Re: Differences between C10 and C20 cab mounts? I believe you'll find the cab is the same, it's the mounts on the frame that are mounted differently as LockDoc said. So you order the bushings for the frame. So if you have a C10 frame & a C20 cab you order C10 bushings ! __________________ Gary 72 SWB 4x4 My 72 SWB Build http://67-72chevytrucks.com/vboard/s...d.php?t=259859

07-21-2014, 11:58 AM	#9
Classic Heartbeat Project Junkie! Fishing Poor!! Join Date: Dec 1999 Location: Olympia,Wa. 98512 Posts: 10,768	Re: Differences between C10 and C20 cab mounts? The factory drawing for the C-KA10 is incorrect in the fact that they included the Ks in the mix. All 4X4s whether they are 1/2 ton or 3/4 ton had the taller rear cab mount pictured in the C-KA20/30 drawing. WES __________________ On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys

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