Do you have polyurethane or rubber cab and bed mounts? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

HeavyHauler · 10-17-2019, 02:10 PM

I am getting ready to buy new cab and bed mounts for my 1968 Chevy C10 abd was trying to figure out if polyurethane or rubber mounts would be best?

Obviously polyurethane would be more solid but would they squeak or anything like that? I am wondering if new style rubber mounts are good quality and would just end up squishing and collapsing in very short time and would not be as good as the factory rubber mounts were.

What did you guys use?

scooterpimp · 10-17-2019, 02:32 PM

Rubber
Posted via Mobile Device

weq92f · 10-17-2019, 02:35 PM

.
Rubber...

I've found on here lots like Rubber on body mounts and Poly on suspension parts due to the vibrations transmitted more harshly via the Poly...

Here's one such discussion...
http://67-72chevytrucks.com/vboard/s...cab+mount+poly

Hth,

-klb

Aus69c20 · 10-17-2019, 03:54 PM

I went with poly mounts on my c20.
I had 3 year old rubber mounts which had already cracked and sagged. I think due in part to the c20s much larger rear cab mounts.
The body lines up nicer now but I do get more squeaking and they’re definitely a bit harsher in ride quality.
I don’t mind the harsher ride and the squeaking, though annoying, does seem to slowly be getting better.

**special-K** · 11-21-2019, 07:31 PM

Quote:

Originally Posted by Aus69c20

I went with poly mounts on my c20.
I had 3 year old rubber mounts which had already cracked and sagged. I think due in part to the c20s much larger rear cab mounts.

What brand? We'd be hearing about new rubber mounts being pure crap if all brands were that bad. If you know the brand, let us know so we can avoid that mistake. I have never known of new rubber mounts being so bad

Astro-Balls · 10-17-2019, 04:17 PM

Rubber, and Man what a difference New bushing make, feels like new.

Rufas · 10-23-2019, 01:40 AM

Polyurethane with no regrets. I installed them over 20 years ago, finished the restore about 2 years ago. Couldn't tell you about the ride difference, but it rides just fine for me. No squeaking either.

BTW, no cracks or deterioration.

**special-K** · 10-23-2019, 06:28 AM

I have what belongs, rubber. Poly bushings came out for suspension and drivetrain mounts as a performance upgrade by giving a more firm positive feel by limiting movement in more extreme use. You had people pulling body mounts to install solid blocks for a body lift (which was a dumb idea) so the poly bushing people figured people would buy body mounts if they made them. The only problem with that is another name for body mounts is body cushion. You want cushion and rubber is what gives you that. People look at their worn out or missing rubber body mounts and think they need something better. So they get poly mounts. Try NEW rubber mounts. I guarantee you will find they are the perfect thing. Certainly better than the 50 year old originals. The only thing wrong with your original rubber body mounts is they are old

**Ironangel** · 10-23-2019, 08:07 AM

Rubber...

I agree with Tim, rubber is quieter and more forgiving...

**LockDoc** · 10-23-2019, 09:20 AM

-
I use rubber too. I have had a set of polys sitting on the shelf for years that I got with a bunch of parts. Never used them. My trucks ride hard enough with the rubber bushings let alone solid plastic.

Just my 2¢ worth

LockDoc

HeavyHauler · 11-21-2019, 03:09 PM

How many of you had to replace your rubber cab mounts or bed mounts after only a couple of years of use?

I dont want to have to go back and do it again after 3 years so I am hoping that todays rubber mounts are of good quality.

GASoline71 · 11-21-2019, 09:45 PM

Quote:

Originally Posted by HeavyHauler

How many of you had to replace your rubber cab mounts or bed mounts after only a couple of years of use?

I dont want to have to go back and do it again after 3 years so I am hoping that todays rubber mounts are of good quality.

I installed new rubber body mounts and bed cushions 8 years ago, and they are still in fantastic shape.

Gary

sick472 · 11-22-2019, 11:58 AM

I have used polyurethane cab and radiator support mounts. BUT, I did this because I converted my metal bed to wood in a DIY fashion which raised my bed by 3/4". This meant my cab and rad support needed to go up too (basically a body lift). I made my mounts out of raw poly round stock. The mounts are 3/4" taller than stock which should get some of the cushion back, but not let them sway. In my case, it think it was the right way to go, but in stock situations...I'd go back to rubber unless I was racing.

GASoline71 · 11-24-2019, 10:40 AM

I got the cab and core support mount/bushings from Frank's Pick'm Ups in Olympia Wa. and there was no branding on the bags they came in. But they had the correct fasteners, washers and spacers and fit great. The rubber pads/bed mounts I got from Wes at Classic heartbeat, and I think I bought stainless steel bed fasteners from LMC.

Again, they all fit perfectly and I've had no problems whatsoever.

Gary

10-17-2019, 02:10 PM	#1
HeavyHauler Registered User Join Date: Nov 2011 Location: USA Posts: 409	Do you have polyurethane or rubber cab and bed mounts? I am getting ready to buy new cab and bed mounts for my 1968 Chevy C10 abd was trying to figure out if polyurethane or rubber mounts would be best? Obviously polyurethane would be more solid but would they squeak or anything like that? I am wondering if new style rubber mounts are good quality and would just end up squishing and collapsing in very short time and would not be as good as the factory rubber mounts were. What did you guys use?

10-17-2019, 02:32 PM	#2
scooterpimp Registered User Join Date: Dec 2015 Location: Newark ,Delaware Posts: 158	Re: Do you have polyurethane or rubber cab and bed mounts? Rubber Posted via Mobile Device

10-17-2019, 02:35 PM	#3
weq92f Registered User Join Date: Oct 2016 Location: Dallas Texas Posts: 3,218	Re: Do you have polyurethane or rubber cab and bed mounts? . Rubber... I've found on here lots like Rubber on body mounts and Poly on suspension parts due to the vibrations transmitted more harshly via the Poly... Here's one such discussion... http://67-72chevytrucks.com/vboard/s...cab+mount+poly Hth, -klb __________________ 67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi 07 335 sport turbo 6sp 94 Trans Am GT LT1 6sp posi -- sold after 22yrs 99 540 sport V8 6sp -- sold 73 240z L24 4sp -- given to friend 68 C10 step 350/350 3.73 open -- sold Last edited by weq92f; 10-17-2019 at 04:10 PM.

10-17-2019, 03:54 PM	#4
Aus69c20 Registered User Join Date: Jun 2015 Location: Melbourne, Australia Posts: 231	Re: Do you have polyurethane or rubber cab and bed mounts? I went with poly mounts on my c20. I had 3 year old rubber mounts which had already cracked and sagged. I think due in part to the c20s much larger rear cab mounts. The body lines up nicer now but I do get more squeaking and they’re definitely a bit harsher in ride quality. I don’t mind the harsher ride and the squeaking, though annoying, does seem to slowly be getting better. __________________ John 69 c20, 396, th400, dana60, ps, ac

10-17-2019, 04:17 PM	#6
Astro-Balls Registered User Join Date: Feb 2019 Location: Nor Cal Posts: 822	Re: Do you have polyurethane or rubber cab and bed mounts? Rubber, and Man what a difference New bushing make, feels like new. __________________ 1968 C20 Fleetside 396 4sp PS PB AC CST . https://www.youtube.com/watch?v=RWK8GgWD4uA

10-23-2019, 01:40 AM	#7
Rufas Registered User Join Date: May 2016 Location: Fort Mohave, AZ Posts: 369	Re: Do you have polyurethane or rubber cab and bed mounts? Polyurethane with no regrets. I installed them over 20 years ago, finished the restore about 2 years ago. Couldn't tell you about the ride difference, but it rides just fine for me. No squeaking either. BTW, no cracks or deterioration. __________________ 1970 GMC 2500 700R Trans, RideTech 4 link rear suspension, air bagged on all four corners, factory upper/lower A-Arms, 2 inch drop spindles. 350 SBC 300hp Weiand Supercharger FiTech 30004 EFI

10-23-2019, 06:28 AM	#8
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: Do you have polyurethane or rubber cab and bed mounts? I have what belongs, rubber. Poly bushings came out for suspension and drivetrain mounts as a performance upgrade by giving a more firm positive feel by limiting movement in more extreme use. You had people pulling body mounts to install solid blocks for a body lift (which was a dumb idea) so the poly bushing people figured people would buy body mounts if they made them. The only problem with that is another name for body mounts is body cushion. You want cushion and rubber is what gives you that. People look at their worn out or missing rubber body mounts and think they need something better. So they get poly mounts. Try NEW rubber mounts. I guarantee you will find they are the perfect thing. Certainly better than the 50 year old originals. The only thing wrong with your original rubber body mounts is they are old __________________ "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 ~

10-23-2019, 08:07 AM	#9
Ironangel Senior Member Join Date: Feb 2010 Location: Falls City, Nebraska "100 Miles From Nowhere" Posts: 2,219	Re: Do you have polyurethane or rubber cab and bed mounts? Rubber... I agree with Tim, rubber is quieter and more forgiving... __________________ Michael of the clan Hill, "Two Seventy Two's" 71 1-ton Dually 350 4-Speed 71 C/50 Grain Truck, 350 Split-Axle 4-Speed 02 3/4 ton Express 14 Indian Chief Vintage 1952 Ford 8N, "Only Ford Allowed On The Property" "Be American, Buy American"

10-23-2019, 09:20 AM	#10
LockDoc The Older Generation Join Date: Aug 2006 Location: Montezuma, Iowa Posts: 25,771	Re: Do you have polyurethane or rubber cab and bed mounts? - I use rubber too. I have had a set of polys sitting on the shelf for years that I got with a bunch of parts. Never used them. My trucks ride hard enough with the rubber bushings let alone solid plastic. Just my 2¢ worth LockDoc __________________ Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 -

11-21-2019, 03:09 PM	#11
HeavyHauler Registered User Join Date: Nov 2011 Location: USA Posts: 409	Re: Do you have polyurethane or rubber cab and bed mounts? How many of you had to replace your rubber cab mounts or bed mounts after only a couple of years of use? I dont want to have to go back and do it again after 3 years so I am hoping that todays rubber mounts are of good quality.

11-22-2019, 11:58 AM	#13
sick472 Registered User Join Date: Jul 2015 Location: Sedalia Mo. Posts: 1,131	Re: Do you have polyurethane or rubber cab and bed mounts? I have used polyurethane cab and radiator support mounts. BUT, I did this because I converted my metal bed to wood in a DIY fashion which raised my bed by 3/4". This meant my cab and rad support needed to go up too (basically a body lift). I made my mounts out of raw poly round stock. The mounts are 3/4" taller than stock which should get some of the cushion back, but not let them sway. In my case, it think it was the right way to go, but in stock situations...I'd go back to rubber unless I was racing. __________________ He who is without oil shall throw the first rod. Compressions 8.7:1 1972 C10 1976 C10 (parts truck) 1985 K20



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