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Thread: what stall do I need? TH400 3.42 gears

  1. #1
    ff_jeff Guest

    what stall do I need? TH400 3.42 gears

    Ok, I have been told lots of different things. Some say I need a 3000 stall, some say with my no locking tranny, I need a 2200-2500. And some say i need a 9.5 inch, some say the bigger the better. I will be driving daily, so... WHat do yall think?

  2. #2
    Join Date
    Nov 2006
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    3000-3200
    2006 silverado SS....Clifford Jr...turbo coming soon
    1970 Chevelle ly6 swap....d1 coming soon

  3. #3
    Slimsilverado Guest
    Your gonna have to keep it close to stall speed most all the time so keep from cooking the verter. Of course tranny coolers will be a must, i thought you said u were gonna get a 3k...

  4. #4
    Join Date
    Nov 2003
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    I'm not sure of your mods myself Jeff, but I've always heard with the TH-350/Th-400's not to go too big on stalls on a daily driver. Not that that's right, but what I was told.

    Not sure it matters, but I had an 86' Silverado with a built 350 and TH-350. I put a 2400 TCI in it and it was way loose for daily driving. It would rev to just about 2400 RPM's before it would move. I could be cruising 40 MPH and let off the gas and it would go to idle and lope with the cam. I loved it cause that thing was a beast, and sounded mean as hell!
    2002 Silverado 2500HD LB7 CCSB LT
    EFI Live by Rob at ATP, Edge CTS Insight DSP 5 control, S&B CAI, PPE boost valve, Pro Fab AIH, AirDog II 165, PPE WIF sensor delete plug, 5" stainless exhaust, Cognito braces & HD tie rods, H2's 315/70 R17 BFG's

    2004 Tahoe LT
    2006 Silverado Z71 LS
    1971 Chevy C10

  5. #5
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    i have a tight 3000 in mine and it felt great
    2006 silverado SS....Clifford Jr...turbo coming soon
    1970 Chevelle ly6 swap....d1 coming soon

  6. #6
    ff_jeff Guest
    Virg do you have a 9.5 verter?

  7. #7
    Join Date
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    Location
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    I run a 3500 stall in mine all day and would not be afraid to tow with it either. Never gets hot with the 48k tru-cool add-on cooler.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  8. #8
    ff_jeff Guest
    what stall do you have gregg? art carr? And does anyone know if its better to get a 9.5inch stall or a 11-12 inch stall?

  9. #9
    Join Date
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    i gots a 9.5 yo
    2006 silverado SS....Clifford Jr...turbo coming soon
    1970 Chevelle ly6 swap....d1 coming soon

  10. #10
    Join Date
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    9.5" Vigilante FTW!
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

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