Physical difference between TH350 and TH400?

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Thread: Physical difference between TH350 and TH400?

  1. #1
    What about the Tuan? Patrick94TT's Avatar
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    Physical difference between TH350 and TH400?

    I bought a TH400 for my current build from some dude out in Arizona that said it was his back-up transmission for a 7-second '57 Chevy. Never saw the car so it kinda sketched me out, but for a brand new Hughes-built 400 for $500 it wasn't a bad deal so I snatched it up anyway.

    Well last night I finally picked up a yoke for it from a friend who has a TH400 (I know this for a fact) and brought it home and tried to slide it in the back of the trans and the yoke is way too big to fit. So I called my buddy and asked him what the deal is and he said the transmission I have might be a TH350? Can anyone verify for me or tell me any physical differences between the two transmissions? Thanks.

    Just to be clear, the first picture is the transmission after I had already picked it up sitting in my own garage.
    The second picture is the one he sent me before I went to pick up the trans.



    Last edited by Patrick94TT; 08-27-2010 at 01:21 PM.
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    SupraForums Member Will84's Avatar
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    Top pic is TH400. The bottom is a TH350.

    Google TH350 oil pan, then TH400 oil pan. It's easy to identify them that way.
    Last edited by Will84; 08-27-2010 at 01:38 PM.

  3. #3
    What about the Tuan? Patrick94TT's Avatar
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    What is the top picture? Because that's the tranny sitting in my garage right now. And just by looking at the pictures, I can tell they're not the same transmission. I'm so fucking pissed some asshole just owned me on a transmission purchase.

  4. #4
    SupraForums Member Will84's Avatar
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    Quote Originally Posted by Patrick94TT View Post
    What is the top picture? Because that's the tranny sitting in my garage right now. And just by looking at the pictures, I can tell they're not the same transmission. I'm so fucking pissed some asshole just owned me on a transmission purchase.
    Top picture is a TH400.

    Your friend... that's the one that may not have what he thinks he has.

    IIRC there were different tailshafts on the TH400's though. That might be the reason the yoke wouldn't fit. I guess your next step is looking into that.

    Relax though... you've got a TH400 sitting there.

  5. #5
    What about the Tuan? Patrick94TT's Avatar
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    Actually Will, I'd hate to disagree but after a quick browse on google images, the transmission at the bottom is most definitely a TH400 and the picture of the transmission I bought sitting in my garage is in fact a TH350. You can tell by the rivets right before the tailshaft. The 350 is smooth, the 400 has those rivets. I got fucking owned.

    TH350
    http://www.400raptor.com/TH350-2.jpg


    TH400
    http://www.firstgencamaro.com/transm...rannyth400.JPG
    Last edited by Patrick94TT; 08-27-2010 at 02:08 PM.

  6. #6
    Smith & Wesson Member S&W 500's Avatar
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    You picked up a TH350

    The bottom photo is a TH400

    Get your money back
    Last edited by S&W 500; 08-27-2010 at 03:22 PM.



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  7. #7
    SupraForums Member Will84's Avatar
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    Looks like you're right, Patrick. I guess I'm getting confused with the angles of the pics and to which way the pans mount. On second look, it does look like the bottom pic is a th400. I was thinking the "angle" of the th350 pan was what I was seeing there. Looks like that angle is on the other side after all. Anyway, bottom line...

    If your pan looks like this, you have a th350:


    If your pan looks like this, you have a th400:


    They're sold now, but I used to have a 350 and a 400 sitting in the garage. Even sitting side by side I sometimes got confused about which was which. That's why I always look at the pan first. Maybe the guy made an honest mistake.

    Anyway... good luck in finding and choking this asshole.
    Last edited by Will84; 08-27-2010 at 08:03 PM.

  8. #8
    SupraForums Member HotSoup's Avatar
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    easiest way is the amount of bolts to the tailshaft....

    Jason
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