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-   -   Rear Trailing Arm Bushings: Stock Replacement or Poly? (https://67-72chevytrucks.com/vboard/showthread.php?t=859734)

Luke87gt 07-15-2025 02:35 AM

Rear Trailing Arm Bushings: Stock Replacement or Poly?
 
Hi guys, considering buying poly bushings for my rear trailing arms.

Has anyone utilized these with success? Any additional NHV (noise/harshness/vibration)?

The oem rubber bushings are a bit tougher to replace than poly.

I'm considering ride quality and no wheel hop when traction is broken.

Any advice? Thank you.

weq92f 07-15-2025 05:41 PM

Re: Rear Trailing Arm Bushings: Stock Replacement or Poly?
 
.

It is my understanding that poly bushings for body mounts and suspension parts like sway bars, control arms, etc bring with them a level of firmness that many have reported is harsh due to the lack of give and so any forces/vibrations are transmitted directly into the body/chassis.

For trailing arms though...it's a good question as I don't see how those joints would experience anything but some fore/aft shock/force with very little twisting action. Not sure what the extra firmness there would gain performance wise though. For a race machine though...you might be looking at a small fraction of a second quicker times in a straight line from the dig.

Hth,

-Kevin

Rich69shortfleet 07-16-2025 09:02 AM

Re: Rear Trailing Arm Bushings: Stock Replacement or Poly?
 
Poly bushings still give, just not as much. I've had poly bushings in the rear control arms for about 20 years and it rides and drives just beautifully.

SCOTI 07-16-2025 09:53 AM

Re: Rear Trailing Arm Bushings: Stock Replacement or Poly?
 
OE style rubber bushings or spherical joints for me. I do use Poly engine & trans mounts.

Luke87gt 07-17-2025 02:21 AM

Re: Rear Trailing Arm Bushings: Stock Replacement or Poly?
 
Quote:

Originally Posted by SCOTI (Post 9394385)
OE style rubber bushings or spherical joints for me. I do use Poly engine & trans mounts.

Poly engine/trans bushings? Oh hell no. I did that once and felt like I was driving a tractor. Never again. What a horrible experience

SCOTI 07-17-2025 10:09 AM

Re: Rear Trailing Arm Bushings: Stock Replacement or Poly?
 
Quote:

Originally Posted by Luke87gt (Post 9394501)
Poly engine/trans bushings? Oh hell no. I did that once and felt like I was driving a tractor. Never again. What a horrible experience

I would prefer a stiffer durometer rubber but I'm unaware of any available so Poly it was. Better than solid steel mounts.

Luke87gt 07-17-2025 11:14 AM

Re: Rear Trailing Arm Bushings: Stock Replacement or Poly?
 
For sure better than solid :)


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