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Thread: need help with ls1 in 1990 gmc sierra

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  1. 07-04-2010 04:48 PM #1
    Crowder
    Crowder is offline Junior Member
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    What transmission did u go with and did u have to modify the mounts or just buy new ones?
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  2. 07-04-2010 05:35 PM #2
    Chevy-Art's Avatar
    Chevy-Art
    Chevy-Art is offline LS1 Club Member
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    I used the 4l60e. And I used these bolted to the engine, then the cups bolted to the adapter plates. http://carshop.carshopinc.com/produc...id/74328/LS1GM
    "ALisSa1 Silverado"
    1990 Chevrolet RCSB● 2002 Chevrolet Camaro LS1/4L60E
    Scrimpin Ain't Easy
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