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Thread: 6.0-TH400 Q's Couldnt find searching

  1. #1

    6.0-TH400 Q's Couldnt find searching

    I have searched for a while and still have questions. I have an 02 6.0 Lq4 going in a 84 chevy with a th400. The motor has the 4l80e flexplate.
    All I need is the spacer (does it go before or on top of the plate? And I also need to elongte the bolt holes, right?

    Also will I need 5 metric bolts to bolt the block to the tranny or are they standard, if no what size etc. Last one..

    WIll I need to hook up a vaccum line from the tranny to the port on the back of the block? If so do you have link for the fitting? sorry for all the q's, just trying to figure it all out before I drop it in. thanks so much

  2. #2
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    Bolts are metric in the Gen3 engines, 10mmx1.5x40mm long for the bell housing to engine block. Work the fitment of the convertor to the flexplate before you stab the engine into the truck, you'll have a much easier time doing that. What year 6.0? Earlier models may bolt right up to the convertor since they had a longer crankshaft on the transmission end. The spacer for the crank that would be added on would be on the transmission side of the flex plate, otherwise it would space the plate out too far and your starter wouldn't engage the starter ring and the plate would also bind on the bellhousing.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  3. #3
    Thanks the motor is a 2002 out of a wrecked 2500HD. Also I need to find out tghe size of the P-side plug to put a water temp sender. Autometer has a 12mmX 1.5 and a 12mmX1.75, which would it be? thanks, all this metric stuff makes things confusing.
    Last edited by silveradoreb; 09-02-2007 at 10:14 PM.

  4. #4
    anyone know the thread pitch for that plug? thanks

  5. #5
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    12mmx1.5pitch
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  6. #6
    thanks, this helps me out alot.

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