Difference in cab mount bushings. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

CG · 01-27-2022, 01:26 PM

Im not 100 percent sure on this, but I think 3/4 ton and 4x4 cab mount bushings are the same. While the basic 2 wheel drive 1/2 ton cab mount bushings are different.

If so why would a cab mount be any different on any style of the 67-72's? Are the frames that much different on say a 2 wheel drive 1/2 vs the same truck in 3/4 ton?

I feel like Ive read that the thickness of the metal was a bit thicker on 3/4 tons, but in my mind I always figured the outside diameter would be the same but the inside would be different on the 3/4 tons.

sloGMC · 01-27-2022, 01:32 PM

Can't speak for why things are different, but the rear cab mount is physically lower on the frame to allow for a taller bushing.

https://67-72chevytrucks.com/vboard/...d.php?t=823071

**LockDoc** · 01-27-2022, 01:55 PM

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Like sloGMC said the Rear body mount brackets on the C20 frame are mounted lower on the frame than the C10's. Not sure why myself. That is why the C20 rear bushings are taller than the C10's.

I don't know about the 4x4's, not familiar with them.

LockDoc

72c20customcamper · 01-27-2022, 06:36 PM

My assumption is the 4x4 and c20 had larger body bushings because of the heavier suspension springs being used. Little more give to smooth out the ride

**LockDoc** · 01-27-2022, 07:16 PM

Quote:

Originally Posted by 72c20customcamper

My assumption is the 4x4 and c20 had larger body bushings because of the heavier suspension springs being used. Little more give to smooth out the ride

That could well be. Makes sense any way.

LockDoc

CG · 01-29-2022, 12:13 PM

Seems plausible to me too ... thanks fellas.

01-27-2022, 01:26 PM	#1
CG BlahBlahBlah Join Date: Feb 2002 Location: Wa. Posts: 20,019	Difference in cab mount bushings. Im not 100 percent sure on this, but I think 3/4 ton and 4x4 cab mount bushings are the same. While the basic 2 wheel drive 1/2 ton cab mount bushings are different. If so why would a cab mount be any different on any style of the 67-72's? Are the frames that much different on say a 2 wheel drive 1/2 vs the same truck in 3/4 ton? I feel like Ive read that the thickness of the metal was a bit thicker on 3/4 tons, but in my mind I always figured the outside diameter would be the same but the inside would be different on the 3/4 tons. __________________ … … … … … … … … ... … … … … … … … … … … …

01-27-2022, 01:32 PM	#2
sloGMC Registered User Join Date: Jun 2018 Location: Central Coast, CA Posts: 126	Re: Difference in cab mount bushings. Can't speak for why things are different, but the rear cab mount is physically lower on the frame to allow for a taller bushing. https://67-72chevytrucks.com/vboard/...d.php?t=823071 __________________ 1971 Pontiac Firebird 1971 GMC C2500

01-27-2022, 01:55 PM	#3
LockDoc The Older Generation Join Date: Aug 2006 Location: Montezuma, Iowa Posts: 25,771	Re: Difference in cab mount bushings. - Like sloGMC said the Rear body mount brackets on the C20 frame are mounted lower on the frame than the C10's. Not sure why myself. That is why the C20 rear bushings are taller than the C10's. I don't know about the 4x4's, not familiar with them. LockDoc __________________ Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 -

01-27-2022, 06:36 PM	#4
72c20customcamper Registered User Join Date: Jul 2018 Location: Catskill Mountains,NY Posts: 8,716	Re: Difference in cab mount bushings. My assumption is the 4x4 and c20 had larger body bushings because of the heavier suspension springs being used. Little more give to smooth out the ride __________________ Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary.

01-29-2022, 12:13 PM	#6
CG BlahBlahBlah Join Date: Feb 2002 Location: Wa. Posts: 20,019	Re: Difference in cab mount bushings. Seems plausible to me too ... thanks fellas. __________________ … … … … … … … … ... … … … … … … … … … … …



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