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Thread: whats the best setup for 450-500 fwhp

  1. #11
    What's the best bang for u Buck on the trans I have pondered swapping to a 400 but don't know how hard it would be being I'm an 05 and my trans is computer controlled

  2. #12
    Join Date
    Sep 2005
    Location
    Austin Tx.
    Posts
    13,138
    Yeah if you want to do a mild cam while you have everything apart, then I would do it. You can buy a junkyard 4L80E and do a swap from the 4L60E, there are differences in the trans, but nothing too crazy. Do some searching on this site, there is lots of useful information.
    1951 3100
    1984 C10

  3. #13
    What does a junk yard 4l80 run

  4. #14
    Join Date
    Sep 2005
    Location
    Austin Tx.
    Posts
    13,138
    Not sure, probably would need to give a few junkyards a call in your area.
    1951 3100
    1984 C10

  5. #15
    OK and I read on the swap this morning on here how hard is it to swap the rearend yokes on the trans

  6. #16
    What is the best Turbo to run

  7. #17
    Join Date
    Aug 2008
    Location
    mansfield texas
    Posts
    3,512
    My brothers truck is thm 400 swapped, just changed the speed sensor to electric. Cheap part, so cheap greg at phx just gave it to me.

  8. #18
    Join Date
    Sep 2011
    Posts
    1,235
    Quote Originally Posted by Crazy Blu View Post
    Sounds like u have a tuning problem not trans, or driving wrong...
    Stock transmissions lol but my built 80e rolled the overrun sprang on the downshift. Tired of fooling with the 80's the th400 is much more budget friendly to build

  9. #19
    What do u have to do to convert the th400 for my truck?

  10. #20
    Join Date
    Aug 2008
    Location
    mansfield texas
    Posts
    3,512
    U aint makin much power, i dunno how ur blowing trans. Theres guys making plenty more with a 60e and running faster. Still say its the tune.

    Think long and hard before goin three speed dude, my brother dknt have a GV and he's at like 3200 rpm at 68-70

    Quote Originally Posted by jansen View Post
    Stock transmissions lol but my built 80e rolled the overrun sprang on the downshiftTired of fooling with the 80's the th400 is much more budget friendly to build
    Bolded ur problem. Leavein 3rd if ur playing hot rod!
    Last edited by Crazy Blu; 07-06-2012 at 01:34 PM.

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