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Thread: street and performance motor plate adapters

  1. #1
    Join Date
    Jan 2004
    Posts
    117
    On my 89 chevy ive got stock motor mounts with street and perfomance aluminum adapters on the ls1. I cant get the motor to bolt in anymore. It seems the adapters make the stock engine mounts wider than the frame mounts now. Anyone else have this problem?

  2. #2
    Join Date
    Mar 2003
    Location
    San Marcos Texas
    Posts
    4,393
    I can't seem to picture what you are saying. Can you post some pictures?
    2006 Superior Blue Trailblazer SS AWD, Stock as a rock

    Sold: 2002 GMC Sportside Denali front end with a 2002 LS1, FLT level 5, Yank 2600, Trick Turbo, T76, Nelson intercooler, 60LB injectors, Warbro fuel pump, Eaton locker, Magnaflow, 3.42, Nelson Performance Tuning (speed density).

    Sold: 1981 GMC LB RC 1500 2002 4.8L 4L60E 12 bolt 3.73 Richmond Lock Right AC PS Nelson Performance tuning

  3. #3
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    I have a 92 with S&P type mounts and they bolt right in. I cannot envision your fitment problem. You do have the rubber mounts bolted to the crossmember and the mount cups bolt to the engine?
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  4. #4
    Join Date
    Jan 2004
    Posts
    117
    aight i managed to get the stock rubber mounts to work now. Its a tight squeeze but the bolts went through...now for the poly bushings!!

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