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Poly Motor Mount Vibration

This is a discussion on Poly Motor Mount Vibration within the External Engine forums, part of the LSx Technical Help Section category; I am going to do a LT header install soon and plan on replacing my motor mounts while I'm at ...

  1. #1
    Member robert 98's Avatar
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    Poly Motor Mount Vibration

    I am going to do a LT header install soon and plan on replacing my motor mounts while I'm at it, I don't know wheter to put stock rubber mounts back in or go with poly, I just don't know what kind of vibration the poly would cause? Is it real bad? Anyone know?

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    Member c5z28's Avatar
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    On your ass flashing
    my highbeams

    I heard that the solid motor mounts give you some vibration at idle.

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    Member robert 98's Avatar
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    thanks I heard that too, I know I won't go with solids not sure about the polys though, I don't want the y pipe banging the floor though I know that!

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    Impounded
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    They break in over time. Most people I have talked to with solid mounts say that are the same as poly.


    Totally worth it IMO

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    Member robert 98's Avatar
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    Thanks Joshie, is anyone brand of the poly mount better than another?

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    79 T/A -91 Firebird
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    Quote Originally Posted by robert 98 View Post
    Thanks Joshie, is anyone brand of the poly mount better than another?
    I think everyone goes with prothane.

  7. #7
    Member robert 98's Avatar
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    Thanks again man

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