Polyurethane motor mounts

Discussion in 'Competition Camaros' started by JRausch, Dec 7, 2015.

  1. JRausch

    JRausch New Member

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    I have an 81 camaro bracket car 427 sbc approx 600 hp runs mid 10's @ 125mph and was wondering if anybody has put polyurethane motor mounts in and how they worked? My problem is my collecter extensions hit the transmission cross member when I whack the throttle or start and shut off the car, still using stock rubber mounts. I've dimpled the extension, but don't want to go any more. (Car was not meant for 3/1/2" exhaust.)
     
  2. Mike N

    Mike N Administrator Staff Member Lifetime Gold Member

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    Solid mounts in my 81, roughly the same et's and also a 3 1/2" exhaust. I debated urethane but figured they wouldn't last very long.
     
  3. JRausch

    JRausch New Member

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    Which solid mounts did you use? Since you went solid on your motor mounts, what about your trans mount, solid or polyurethane?
     
  4. mrdragster1970

    mrdragster1970 Veteran Member Lifetime Gold Member

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    .


    Before switching to motor plates I also ran solids street & strip.
    Was not even close to as bad as everyone said it would be.
    I barely noticed a difference, since the car wasn't very smooth anyway.

    Unless you have a full chassis car like my Pro-Mod, which I use a solid trans mount as the limiter.
    You should NEVER use a solid trans mount in a real car, even with a top notch cage.
    Use an aftermarket poly trans mount and you will be fine, and not eat cases.

    Good luck.


    .
     
  5. Mike N

    Mike N Administrator Staff Member Lifetime Gold Member

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    Moroso solid mounts and a stock rubber trans mount.
     
  6. Bobalos

    Bobalos Veteran Member

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    X2 worked bitchen for a long time.

    Bob
     
  7. roeville

    roeville Veteran Member

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    x3, ran same set up years ago with no problems.
     

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