Body/Cab mounts...Poly or Rubber - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**70cst** · 12-11-2007, 03:29 PM

Ok guys...I am getting ready to buy body/cab cushions-mounts...any opinion of the rubber verses the poly material?

badchev69 · 12-11-2007, 03:31 PM

poly lasts longer and gives your cab a more "solid" feel.

68gmsee · 12-11-2007, 03:39 PM

Lots of guys here have said that they don't like the polyurethane mounts. Some have said they squeek too much and others have said the ride is too stiff and like the ride of the rubber ones better.

I'm considering the rubber ones for mine.

bowtieboy93 · 12-11-2007, 03:40 PM

with badchev69, poly costs more but is better than rubber. poly shouldn't squeak at all if you grease them right

badchev69 · 12-11-2007, 03:47 PM

I put mine together about 8 years ago now and haven't had a squeak or crack in them yet. The rubber ones will be cheaper but a lot of the aftermarket ones i have seen (like my fathers) have fallen apart in a matter of a few years.

**1970cstblazer** · 12-11-2007, 04:53 PM

Unless you can find original GM rubber mounts, go with the poly. The aftermarket rubber mounts are more comfortable than the poly, but they fall apart sooner.

va_tlc · 12-11-2007, 05:09 PM

i used the rubber ones. softer ride plus by the time they wear out the truck will need re built anyways

**70cst** · 12-12-2007, 09:32 AM

Thanks for the unput thus far...any other opinions or experience with the various body cushions?

crazy longhorn · 12-12-2007, 04:03 PM

Quote:

Originally Posted by 70cst

Thanks for the unput thus far...any other opinions or experience with the various body cushions?

I have poly on the longhorn......with the tilt front clip, I didnt know where the clutch would let out, it squirmed all over with the rubber bushings. The poly does make the ride a tad harsher, but the doors shut better, & the clutch lets up where I want it to

Money well spent IMO! I dont have any squeaks either, but would reccomend rubber for a 4wd that you run off road, to give a little more flex.

L

Chevy1TonFun · 12-12-2007, 12:53 PM

I just bought OEM rubber mounts and I love them. I bought mine through ECE.

**Hart_Rod** · 12-12-2007, 01:05 PM

Supposedly the black poly mounts are impregnated with with graphite to help eliminate/reduce squeaks. At least that is what Energy Suspension's website claims. I put the red poly ones on my 69 Suburban and haven't had a problem with squeaks. It made a huge difference in the feel of the truck (it still had the original bushings on it,

). It definitely made it feel "sportier" (is that a word?!). It was the best $115 I spent on the truck as far as the ride goes (and that includes the airbags!).

Frizzle Fry · 12-12-2007, 03:15 PM

**70cst** · 12-12-2007, 03:42 PM

Quote:

Originally Posted by Hart_Rod

Supposedly the black poly mounts are impregnated with with graphite to help eliminate/reduce squeaks. At least that is what Energy Suspension's website claims. I put the red poly ones on my 69 Suburban and haven't had a problem with squeaks. It made a huge difference in the feel of the truck (it still had the original bushings on it,

). It definitely made it feel "sportier" (is that a word?!). It was the best $115 I spent on the truck as far as the ride goes (and that includes the airbags!).

Looks like I am leaning towards the poly mounts....so far.

**70cst** · 12-13-2007, 06:01 AM

I just did a search and there is a lot of support for both sides. The squeaking "noise" is an issue with some but the use of graphite poly cushions seem to have solved this issue. Again thanks for all the input as this is helpful.

**CUSTOM/10** · 12-13-2007, 08:22 AM

This is my take on rubber vs poly. Suspension gets poly & body mounts rubber. Thats what I'm doing on my current project. I've broken two cab mounts ( The bracket thats rivited to the frame ) using poly mounts. Both were on 4x4's. I believe it was do to the poly not being able to give enough when the frame is being flexed. You maybe fine with a 2 wd truck or a 4x4 that doesn't go off-road.

Gary

mothertrucker424 · 12-13-2007, 05:05 PM

i got poly on my truck and it straightened out my body and made it sit higher than bed but i like the ride better but never had new rubber mounts i would recomend poly though

12-11-2007, 03:29 PM	#1
70cst Senior Member Join Date: Feb 2001 Location: New Madison, Ohio Posts: 21,375	Body/Cab mounts...Poly or Rubber Ok guys...I am getting ready to buy body/cab cushions-mounts...any opinion of the rubber verses the poly material? __________________ A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder!

12-11-2007, 03:31 PM	#2
badchev69 Active Member Join Date: Apr 2004 Location: Stayton, Oregon 97383 Posts: 178	Re: Body/Cab mounts...Poly or Rubber poly lasts longer and gives your cab a more "solid" feel. __________________ 1969 C10 SWB /350 vortech/th400 1968 SWB build (in progress) 1969 SWB build (my son's future project) 1968 camaro yellow/white stripes (wife's car) 2011 GMC reg cab short bed 2wd daily driver 5/7 drop on 22's 1972 K5 Blazer 13"/11"lift,38"M/T MTZ's, 3" cust exst. 350/350 (sold it )

12-11-2007, 03:39 PM	#3
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: Body/Cab mounts...Poly or Rubber Lots of guys here have said that they don't like the polyurethane mounts. Some have said they squeek too much and others have said the ride is too stiff and like the ride of the rubber ones better. I'm considering the rubber ones for mine.

12-11-2007, 03:40 PM	#4
bowtieboy93 Registered User Join Date: Feb 2007 Location: (Cloverdale) Surrey BC Canada Posts: 1,566	Re: Body/Cab mounts...Poly or Rubber with badchev69, poly costs more but is better than rubber. poly shouldn't squeak at all if you grease them right __________________ Travis travis_moffatt@hotmail.com 1969 Chevrolet C-10 LWB, 350c.i., TH350, In Pieces. 1991 GMC Sonoma, IROCS s10 grill 1963 Ford Galaxie 351/C4 Last edited by bowtieboy93; 12-11-2007 at 03:41 PM.

12-11-2007, 03:47 PM	#5
badchev69 Active Member Join Date: Apr 2004 Location: Stayton, Oregon 97383 Posts: 178	Re: Body/Cab mounts...Poly or Rubber I put mine together about 8 years ago now and haven't had a squeak or crack in them yet. The rubber ones will be cheaper but a lot of the aftermarket ones i have seen (like my fathers) have fallen apart in a matter of a few years. __________________ 1969 C10 SWB /350 vortech/th400 1968 SWB build (in progress) 1969 SWB build (my son's future project) 1968 camaro yellow/white stripes (wife's car) 2011 GMC reg cab short bed 2wd daily driver 5/7 drop on 22's 1972 K5 Blazer 13"/11"lift,38"M/T MTZ's, 3" cust exst. 350/350 (sold it )

12-11-2007, 04:53 PM	#6
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 1,914	Re: Body/Cab mounts...Poly or Rubber Unless you can find original GM rubber mounts, go with the poly. The aftermarket rubber mounts are more comfortable than the poly, but they fall apart sooner. __________________ 1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 45k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 62k miles, 3.6, 8L45, 3.23 LS, 18" wheels

12-11-2007, 05:09 PM	#7
va_tlc Registered User Join Date: Nov 2005 Location: VIRGINIA Posts: 905	Re: Body/Cab mounts...Poly or Rubber i used the rubber ones. softer ride plus by the time they wear out the truck will need re built anyways __________________ 1969 rs 1966fastback 1969swbc/10 2006gt 1972swb4x4

12-12-2007, 09:32 AM	#8
70cst Senior Member Join Date: Feb 2001 Location: New Madison, Ohio Posts: 21,375	Re: Body/Cab mounts...Poly or Rubber Thanks for the unput thus far...any other opinions or experience with the various body cushions? __________________ A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder!

12-12-2007, 12:53 PM	#10
Chevy1TonFun Grease Monkey Join Date: Oct 2007 Location: Fresno CA Posts: 750	Re: Body/Cab mounts...Poly or Rubber I just bought OEM rubber mounts and I love them. I bought mine through ECE. __________________ Tow Rig: 2012 Chevy 2500HD CCSB LTZ Z71 4x4 Duramax Ultimate Offroad Build: 1978 Chevy Silverado K30 Crewcab Build Link http://67-72chevytrucks.com/vboard/s...d.php?t=654053 Mud Truck: 1972 Chevy Cheyenne K30 4x4, 468/400/205, D60/D70HD, 18" Custom Lift, 17x39" IROKs FOR SALE http://67-72chevytrucks.com/vboard/c...ton-4x4&cat=12

12-12-2007, 01:05 PM	#11
Hart_Rod ************* Join Date: Apr 2005 Location: Pensacola, FL Posts: 17,862	Re: Body/Cab mounts...Poly or Rubber Supposedly the black poly mounts are impregnated with with graphite to help eliminate/reduce squeaks. At least that is what Energy Suspension's website claims. I put the red poly ones on my 69 Suburban and haven't had a problem with squeaks. It made a huge difference in the feel of the truck (it still had the original bushings on it, ). It definitely made it feel "sportier" (is that a word?!). It was the best $115 I spent on the truck as far as the ride goes (and that includes the airbags!). __________________ Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 Last edited by Hart_Rod; 12-12-2007 at 01:06 PM.

12-12-2007, 03:15 PM	#12
Frizzle Fry Registered User Join Date: Aug 2005 Location: Hillsboro Oregon Posts: 6,449	Re: Body/Cab mounts...Poly or Rubber

12-13-2007, 06:01 AM	#14
70cst Senior Member Join Date: Feb 2001 Location: New Madison, Ohio Posts: 21,375	Re: Body/Cab mounts...Poly or Rubber I just did a search and there is a lot of support for both sides. The squeaking "noise" is an issue with some but the use of graphite poly cushions seem to have solved this issue. Again thanks for all the input as this is helpful. __________________ A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder!

12-13-2007, 08:22 AM	#15
CUSTOM/10 Senior Member Join Date: May 2003 Location: Sandown, NH Posts: 2,857	Re: Body/Cab mounts...Poly or Rubber This is my take on rubber vs poly. Suspension gets poly & body mounts rubber. Thats what I'm doing on my current project. I've broken two cab mounts ( The bracket thats rivited to the frame ) using poly mounts. Both were on 4x4's. I believe it was do to the poly not being able to give enough when the frame is being flexed. You maybe fine with a 2 wd truck or a 4x4 that doesn't go off-road. Gary __________________ Gary 72 SWB 4x4 My 72 SWB Build http://67-72chevytrucks.com/vboard/s...d.php?t=259859

12-13-2007, 05:05 PM	#16
mothertrucker424 Registered User Join Date: Sep 2006 Location: st pete Posts: 404	Re: Body/Cab mounts...Poly or Rubber i got poly on my truck and it straightened out my body and made it sit higher than bed but i like the ride better but never had new rubber mounts i would recomend poly though



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