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Old May 18, 2008 | 02:48 PM
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Default poly mounts

While the transmission is out i was going to swap to poly mounts for the motor,transmission, and torque arm. any cons to this as well as which sponsor can i purchase all these in one purchase.
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Old May 18, 2008 | 03:46 PM
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Ride will be MUCH harsher.
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Old May 18, 2008 | 04:12 PM
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Originally Posted by dragonrage
Ride will be MUCH harsher.
Actually, not really .

A poly tranny mount on its own MAY cause increased vibrations inside your car. I suffered this problem, as do many others.

I just installed a set of poly motor mounts this year, in conjunction with the poly trans mount. As others have experienced by doing so, I find that the interior vibrations are SIGNIFICANTLY REDUCED!! Almost nil!

I also have a poly Tq arm mount, and I do not find the car very harsh at all.

Perhaps this is my experience only, but I think many people have had good results by going to all poly mounts.

Prothane is currently the only manufacturer who makes the poly motor mounts for the LS1, and they make the tranny mount as well. I'm pretty sure they sell all three as a set. Oh, and I'm sure they have the Tq arm mount too. Energy Suspensions make the tranny & Tq arm mounts, but not the motor mounts.

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Old May 18, 2008 | 04:41 PM
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Hmmm... Guess I'd better hurry up and get my motor mounts in then.
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Old May 19, 2008 | 09:54 PM
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I have prothane motor mounts, trans mount, and torque arm mount. Ride is a little shakier but nothing crazy. I love it.
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Old May 20, 2008 | 07:10 AM
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Mine vibrates real bad on the highway. I think its the tranny mount
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Old May 20, 2008 | 08:50 AM
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We offer both Prothane and Energy suspension bushings. I agree that the poly transmission mount is going to add some interior noise to the car but the torque arm and motor mounts don't add any detectable noise at all.
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Old May 20, 2008 | 08:57 PM
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Ordered the parts from BMR today, and recieved great service from the lady who handled my call.
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Old May 20, 2008 | 09:07 PM
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Originally Posted by BMR Tech
We offer both Prothane and Energy suspension bushings. I agree that the poly transmission mount is going to add some interior noise to the car but the torque arm and motor mounts don't add any detectable noise at all.
I have a poly tranny mount and stock motor and tq arm mounts. I will soon have poly motor and poly torque arm mounts within a month.

Is it ok to run poly motor mounts and poly torque arm mounts, but a stock rubber tranny mount? I hear a poly might be good for the poly torque arm but, as it is now, just the poly tranny mount makes bad vibrations on the highway.
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Old May 21, 2008 | 08:06 AM
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Originally Posted by CranMaro99
I have a poly tranny mount and stock motor and tq arm mounts. I will soon have poly motor and poly torque arm mounts within a month.

Is it ok to run poly motor mounts and poly torque arm mounts, but a stock rubber tranny mount? I hear a poly might be good for the poly torque arm but, as it is now, just the poly tranny mount makes bad vibrations on the highway.
I see no problem doing it that way .....
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Old May 21, 2008 | 12:30 PM
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Originally Posted by BMR Tech
I see no problem doing it that way .....
Thanks, I was just curious as many say a poly tranny mount is highly required if you have an aftermarket tranny mounted torque arm.
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Old May 21, 2008 | 01:58 PM
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maybe if your running low 10s or high 9s or faster
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Old May 21, 2008 | 05:30 PM
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There is a thread on here, where the guy from energy suspentions is looking for people to try out the tranny mount and is willing to give you a suspention kit just for taking some measurements and trying the tranny mount. It is in this forum.
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