72 Cab mount bushings - The 1947 - Present Chevrolet & GMC Truck Message Board Network

brandnew72 · 01-08-2025, 08:19 PM

72 C10 Longbed

My OEM rubber bushings had all but crumbled, sending the cab body line 3/4" below the bedline on the drivers side and maybe a 1/4" low on the passenger side.

Ordered a kit that came with with everything but the bolts, poly kit however. Install went well, no real headaches to mention. All the parts matched and line up well. The cab came back up to match the rest of the truck but there is either more vibration at traveling speeds, or I'm paying more attention to things.

I've read the poly mounts can transfer more vibration to the vehicle and the rubber mounts don't last. You guys just deal with the vibrations? Or is there another material between rubber and polyurethane that is used?

RustyPile · 01-08-2025, 08:25 PM

I installed the polyurethane mounts and experienced the same "noise".. I couldn't stand those things. after about 6 months, I replaced them with the rubber mounts from Classis Industries. They came with bolts and spacers... That was about 6 years ago and there is no deterioration in them..

brandnew72 · 01-08-2025, 08:29 PM

I may just order a rubber version of the kit so it'll be in the garage for the day I cant take these, lol. Going to give them a fair shake and retorque after 100 miles and see if maybe they are too tight or need some breaking in.

Thank you for the reply!

**71CHEVYSHORTBED402** · 01-09-2025, 10:36 PM

I've always heard rubber is the way to go. What you're describing is probably why. ClassicHeartBeat sells a real good kit.

01-08-2025, 08:19 PM	#1
brandnew72 Registered User Join Date: Nov 2024 Location: Charleston, SC Posts: 53	72 Cab mount bushings 72 C10 Longbed My OEM rubber bushings had all but crumbled, sending the cab body line 3/4" below the bedline on the drivers side and maybe a 1/4" low on the passenger side. Ordered a kit that came with with everything but the bolts, poly kit however. Install went well, no real headaches to mention. All the parts matched and line up well. The cab came back up to match the rest of the truck but there is either more vibration at traveling speeds, or I'm paying more attention to things. I've read the poly mounts can transfer more vibration to the vehicle and the rubber mounts don't last. You guys just deal with the vibrations? Or is there another material between rubber and polyurethane that is used?

01-08-2025, 08:25 PM	#2
RustyPile Registered User Join Date: Dec 2017 Location: Elkhart, Texas Posts: 2,108	Re: 72 Cab mount bushings I installed the polyurethane mounts and experienced the same "noise".. I couldn't stand those things. after about 6 months, I replaced them with the rubber mounts from Classis Industries. They came with bolts and spacers... That was about 6 years ago and there is no deterioration in them..

01-08-2025, 08:29 PM	#3
brandnew72 Registered User Join Date: Nov 2024 Location: Charleston, SC Posts: 53	Re: 72 Cab mount bushings I may just order a rubber version of the kit so it'll be in the garage for the day I cant take these, lol. Going to give them a fair shake and retorque after 100 miles and see if maybe they are too tight or need some breaking in. Thank you for the reply!

01-09-2025, 10:36 PM	#4
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,691	Re: 72 Cab mount bushings I've always heard rubber is the way to go. What you're describing is probably why. ClassicHeartBeat sells a real good kit. __________________ Tony 1971 C10 Custom Deluxe SWB 402/400TH A/C I developed an assembly information kit for restoring my truck from nuts and bolts. It's written in Assy. order, short & simple, packed with all OEM hardware ID; castings; part ID; 100s of part numbers; wiring simple - Resource, and trivial too. Much info. applies to all 67-72 GM, A/C vehicles, esp. trucks W/O saying. Full search ability, including to 700+ images of illus., parts, charts, Assy., points of interest, cab, bed, & front clip cart plans- Specials and cores were serviced out and R excluded e.g. front/rear glass, body/paint, engine core, rebuilt hinges, steering box, trans, etc. The project was in-line with long former professions developing process, policy, specs, demo, written for novices, admin., policy, engineers, development, systems & test - Public & govt 2, gross. Sell soft copy cheaply, PM if interested.Build thread:https://67-72chevytrucks.com/vboard/...d.php?t=730025 Last edited by 71CHEVYSHORTBED402; 01-11-2025 at 03:18 PM.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.