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08-27-2007, 12:11 PM
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#1 |
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Registered User
Join Date: Apr 2006
Location: Lubbock, TX
Posts: 62
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Poly vs Rubber
I'm working on a Crew Cab and need to replace the body mount bushings and bolts. Trying to decide on Poly vs Rubber and a good source for either.
Any advice is appreciated. Thanks Mike |
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08-27-2007, 12:58 PM
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#2 |
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www.73-87chevytrucks.com
 
Join Date: Dec 1999
Location: Birmingham, AL
Posts: 6,935
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Re: Poly vs Rubber
Poly is less likely to rot out again. I get all my stuff from www.p-s-t.com
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Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com |
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08-27-2007, 05:59 PM
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#3 |
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The Crazy Machanic
Join Date: Jan 2007
Location: Nokesville Va
Posts: 1,437
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Re: Poly vs Rubber
poly i only have poly front sway bars but that what was bad when i got it ill replace with poly as each rubber peice goes bad.
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*1986 Sliverado longbed 400 small block mean as hell, 700r4 trans (5 speed coming one day)  * 1970 chevelle 2dr sedan Latest update June 24 2007.  *1957 4 door stationwagon - pink all original needing a good restore (body great, floors bad)  newest additions 1965 shortbed fleet great granddads. Been told im nuts to bring it back from the dead (still going to happen) plans-all stock with a turbo 292 inline 3 speed column shift. and thats it big block 427 and 5 speed trans and ford 9 inch theyhave no home yet thinking what to put them in and a 79 c60 trash truck um no idea i have one
Last edited by Srubydo1986; 08-27-2007 at 06:00 PM. |
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08-27-2007, 06:46 PM
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#4 |
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Senior Member
Join Date: Oct 2005
Location: Austin, TX
Posts: 1,229
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Re: Poly vs Rubber
is there a noticeable difference in ride? I once replaced all mine with poly, and it *seemed* like it rode a bit more harsh...
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"Anybody who would paint his truck like this, would go to a minister's funeral dressed in feathers!" - Big Enis Burdett '72 Blazer Restoration Blog: http://sportchicken.blogspot.com/ |
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08-27-2007, 11:01 PM
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#5 |
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The Crazy Machanic
Join Date: Jan 2007
Location: Nokesville Va
Posts: 1,437
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Re: Poly vs Rubber
it a more stiff material.ore of a racing thing but i like cornering at 55 in a long bed and going sideways and still holding it. BUt thats me/
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*1986 Sliverado longbed 400 small block mean as hell, 700r4 trans (5 speed coming one day) * 1970 chevelle 2dr sedan Latest update June 24 2007. *1957 4 door stationwagon - pink all original needing a good restore (body great, floors bad) newest additions 1965 shortbed fleet great granddads. Been told im nuts to bring it back from the dead (still going to happen) plans-all stock with a turbo 292 inline 3 speed column shift. and thats it big block 427 and 5 speed trans and ford 9 inch theyhave no home yet thinking what to put them in and a 79 c60 trash truck um no idea i have one
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08-27-2007, 11:52 PM
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#6 |
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Registered User
Join Date: Feb 2003
Location: Midwest City, OK
Posts: 1,001
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Re: Poly vs Rubber
Poly body mounts are too stiff in my opinion. This is one area I would use the factory rubber pieces. It'll be a much softer ride without any adverse effects in the handling department. I noticed you live in Texas. I wouldn't worry about them rotting out anytime soon.
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Robert Current: 1986 SWB Silverado 4.3 / TH400 Past: 1985 SWB Silverado 305 / TH350 - sold 1995 1987 1/2 ton Silverado - FI 350 / 700R4 sold 2007 |
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08-28-2007, 05:14 AM
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#7 |
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>130dB Moderator
Join Date: Aug 2006
Location: Sacramento, CA
Posts: 2,130
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Re: Poly vs Rubber
While Im sure that Poly cab mounts are not a big deal, you have to remeber the engineering involved. I've seen plenty of tore mounts in different areas because the poly bushings are too harsh on the chasis.
Sure, poly will probably last longer, but I can guarantee that rubber offers a better ride, it's more true to the OE engineering, and besides, how often do you replace the dam things anyway...?
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Living Life @ 130dB LED Tail Light Conversion; How-to Friend. Father. Brother. RIP El Jay ------------------------------------------------------------------------------------------------------------------------- CLICK HERE and for less than $0.07 a day, you too can help support and build a better forum. |
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08-28-2007, 11:37 AM
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#8 |
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Registered User
Join Date: Jul 2004
Location: ashland oh
Posts: 660
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Re: Poly vs Rubber
hello,,put poly on my 4x4,,rides good,good price from summit,,but do not throw any of your old parts away,,on my 4x4 u had to use i believe the rear center piece and cut to different lenghth or something like that,(been awhile) just hold on to your old stuff till done 2 be sure..
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08-30-2007, 01:26 PM
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#9 |
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Senior Member
Join Date: Jan 2000
Location: Cincinnati, Ohio
Posts: 1,492
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Re: Poly vs Rubber
And I've had the poly mounts go bad. My first 72 K20 is on its second set. I haven't use them since on my 71 K20 or 87 K30.
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08-30-2007, 07:06 PM
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#10 |
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The One And Only !!!
Join Date: Jan 2007
Location: Hole in the woods Florida
Posts: 4,567
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Re: Poly vs Rubber
Trucks ride rough enough without adding stiff poly bushings....I'm sticking with rubber myself, As AceX said how often are you going to have to replace them ?
Mine are 33 yrs. old and still in good shape, I'm only replacing them because I want EVERYTHING new on my truck.
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93 Jeep XJ 88 Buick La Sabra Toys; 88 TA-GTA in the works.... 97 GMC Ext. Cab 502 Crate 5 Spd......Sucks Gas But Haulz Azz !  The primary function of an Engineer is to make it difficult for the Fabricator and impossible for the Mechanic. "Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!
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08-30-2007, 07:35 PM
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#11 |
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Happy to be here
 
Join Date: Mar 2000
Location: Cypress, TX
Posts: 39,021
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Re: Poly vs Rubber
Guys one thing you need to consider is what "poly" bushing we are talking about. There is a BIG difference in polyurethane bushings and polygraphite bushings. Polyurethane is very firm, and can cause a rougher ride as well as crack. Polygraphite is a custom blend of graphite impregnated polyurethane that is much softer, and doesn't squeak.
The bushing that http://p-s-t.com sells are polygraphite..... 
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Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra" Last edited by N2TRUX; 08-30-2007 at 07:35 PM. |
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