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Thread: can i make a th350 work in a 2003

  1. #11
    Join Date
    Apr 2009
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    Evant,tx
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    305
    ill have a long while to do it i have several th400 and th350s no newer trannys tho still have to get some more stuff for my motor swap

  2. #12
    Join Date
    Mar 2003
    Location
    San Antonio, TX
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    BlueL92 has a v6 truck, with a 6.2L and TH350 swap, pm him and ask him.

  3. #13
    Join Date
    Nov 2003
    Location
    Denton Texas
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    20,540
    there are numerous options, crank spacer, longer bolts and flat flexplate, dished flexplate and spacer on the trans side of plate with longer bolts, dished plate with hughes convertor snout extension... with the dished flexplate you will need to slot the bolt holes to align with the old convertor bolt pattern or you have to drill new holes in the correct pattern. As has been reiterated, do the 80e and forego the headaches of multiple swaps and retrofits.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  4. #14
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    Apr 2009
    Location
    Evant,tx
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    i understand about bolting them together was more courious on the electrical side of things

  5. #15
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    Mar 2003
    Location
    San Antonio, TX
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    Quote Originally Posted by cjcalhoun View Post
    i understand about bolting them together was more courious on the electrical side of things
    no electrical to worry about, the trans will shift like the old school trans do, or make it fully manual.
    Not sure on the speedometer, but i have a mechanical to electrical converter for my electronic speedo on my powerglide.

  6. #16
    Join Date
    Nov 2007
    Location
    Pittsburgh, PA
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    Quote Originally Posted by farmtruc View Post
    no electrical to worry about, the trans will shift like the old school trans do, or make it fully manual.
    Not sure on the speedometer, but i have a mechanical to electrical converter for my electronic speedo on my powerglide.
    i know some ppl in the fbody world are using the ABS sensor as the speedo. they create a value in the pcm to configure the speedo
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  7. #17
    Join Date
    Nov 2006
    Location
    Mesquite, TX
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    4,321
    Quote Originally Posted by RedHeartbeat View Post
    there are numerous options, crank spacer, longer bolts and flat flexplate, dished flexplate and spacer on the trans side of plate with longer bolts, dished plate with hughes convertor snout extension... with the dished flexplate you will need to slot the bolt holes to align with the old convertor bolt pattern or you have to drill new holes in the correct pattern. As has been reiterated, do the 80e and forego the headaches of multiple swaps and retrofits.
    X2...he helped me on the th400 swap....it's nice cause it's lite and easy to fit up in there but sucks just in general
    2006 silverado SS....Clifford Jr...turbo coming soon
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  8. #18
    Join Date
    Apr 2009
    Location
    Evant,tx
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    305
    thanx for all your help. like everything else its all about prefrance one person may like it the other might hate it

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