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#1 |
Registered User
Join Date: Sep 2005
Location: Montclair, California
Posts: 163
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Bushing Debate
I going to be replacing the suspension bushings on my 70 C20 soon. And I haven't quite decided on what to go with, Rubber or Polyurethane.
Anyone have pro/con experience with either type. I plan on driving simi-daily mixed in with some hauling and pulling. No off-roading, mainly streets and freeways. I really want to know if the ride is harsher or similar with the polys compared to the rubber. Cost does play a role, but not a determining factor. Thanks for any input. |
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#2 |
Seņor Member
Join Date: May 2002
Location: Edge of the world
Posts: 5,367
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Poly is generally tighter, but by design. I have seen "soft" poly busings before, which were said to give similar compression to rubber. The big long-term benefit to poly is that they don't break down much over time-- unlike rubber.
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#3 |
Hollister Road Co.
Join Date: Apr 2005
Location: Houston
Posts: 6,134
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I don't use poly very much because while rubber breaks down over time that time is usually 20 years or 10 years of everyday driving. Poly will wear like any other bushing due to the fact that you have to grease it to keep it quite. My experiences are that ploy depending on who makes it vary in fit, some loose and some tight. Rubber is a smoother ride and poly is a firmer ride. Some poly won't let your suspension flex thru the complete travel unless you grease them, rubber may be too flexible for some applications. If you use after market arms you may be limited to poly.
I bought some DJM arms that were so loose that I couldnât use them and went with stock arms and rubber. I'd stay with rubber unless you are drag racing or road racing and have the time to properly fit the poly bushings. With rubber put them in and don't worry about it. You will have sold it long before the rubber wears out. |
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#4 |
Mike
Join Date: Jan 2003
Location: west chester pa
Posts: 2,474
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Unless You updated to 73+ style,neither will work.The stock ones are screwed onto the arm shaft.
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70'c/10, 71 suburban4x4 402bb, 72suburban 4/6 drop, 72k/5 4x4 blazer 4" lift 35 tires |
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#5 | |
67 is sold
Join Date: Apr 2001
Location: Troy, Michigan
Posts: 6,738
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Quote:
Do they even make a poly bushing kit for the 67-72 front ends? |
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#6 |
Mike
Join Date: Jan 2003
Location: west chester pa
Posts: 2,474
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The only rubber on the 63-72 front ends is the gease seals.You can get rubber or poly swaybar bushings.Same with the trailing arms,rubber or poly.
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70'c/10, 71 suburban4x4 402bb, 72suburban 4/6 drop, 72k/5 4x4 blazer 4" lift 35 tires |
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#7 | |
Registered User
Join Date: Aug 2001
Location: rock island,il,usa
Posts: 5,382
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Quote:
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http://community.webshots.com/user/hotrodhorn |
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#8 |
Account Suspended
Join Date: Jun 2000
Location: over yonder
Posts: 14,270
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I think XXL was referring to the poly & rubber body-cab mounts.
Just a guess. |
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#9 |
Registered User
Join Date: Sep 2005
Location: Montclair, California
Posts: 163
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Thank you gents! Your opinions and experiences are truly appreciated.
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1972 C / 20 |
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#10 | |
Seņor Member
Join Date: May 2002
Location: Edge of the world
Posts: 5,367
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Quote:
![]() Oops.
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#11 |
Registered User
Join Date: Nov 2000
Location: Huntsville Ontario Canada
Posts: 4,052
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I have poly Swaw bar bushings they are awesome gives the road a great feal.
I also have poly motor and tranny mounts. Themotor does not twist under load like the stock styles avaible. They feel greaat alos. No wierd vibirations like I was slightly concerned about.
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1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD |
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#12 |
Happy to be here
![]() Join Date: Mar 2000
Location: Cypress, TX
Posts: 39,023
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Try to find polygraphite bushings if possible. They offer the best of both worlds. They have the firmness and durability of polyurethane bushings, but they use graphite impregnated urethane so they never squeek.....
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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" |
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