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Help......th 350,400, or 4 speed sm 465

Discussion in 'The Garage' started by 1977jimmything, Jul 30, 2004.

  1. 1977jimmything

    1977jimmything Registered Member

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    I am building my 1977 jimmy. So far I have 60 front ( power lock?), 14 ff rear, (Detroit locker). 4.56 gears. 4" spring lift. 36, 16.5 Swampers. Did the sawsall thing. Building a stroker big block. I have a th 350 and 205. My plans are to do the doubler some day. I wheel in mud, snow, some rocks, and is sees some pavement. 20 miles or so to the woods, not a daily driver.


    So, what tranny is the best choice?



    Thanx for the help......
     
  2. dremu

    dremu Officious Thread Derailer Premium Member

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    Re: Help......th 350,400, or 4 speed

    A TH350 will wear out behind a stock BBC. If you're running something bigger, it will explode. If by "4 speed" you mean the 700R4, a stock one won't hold up either.

    The factory put TH400's behind BBC's for a reason. /forums/images/graemlins/laugh.gif

    You could get a built 700R4 if you wanted the over drive. A well-built TH400 will be stouter, however, prolly less money, and generally bulletproof.

    Since you're not driving on the road much, the overdrive doesn't seem like it's worth the extra $$ to me.

    -- A
     
  3. 1977jimmything

    1977jimmything Registered Member

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    Re: Help......th 350,400, or 4 speed

    Thanx....How about a sm465?
     
  4. dremu

    dremu Officious Thread Derailer Premium Member

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    Re: Help......th 350,400, or 4 speed

    Well, I prefer slushboxes, but other people prefer manuals. Your call.

    The '465 came behind BBC's factory, so it should be fine.

    -- A
     
  5. Z3PR

    Z3PR Banned

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    Re: Help......th 350,400, or 4 speed

    [ QUOTE ]
    Thanx....How about a sm465?

    [/ QUOTE ]I prefer a auto tranny for playing in the mud.
     
  6. 75-K5

    75-K5 3/4 ton status

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    Re: Help......th 350,400, or 4 speed

    [ QUOTE ]
    Thanx....How about a sm465?

    [/ QUOTE ]

    You can't go wrong with a $100 transmission that will last 300,000 miles. /forums/images/graemlins/waytogo.gif
     
  7. 1977jimmything

    1977jimmything Registered Member

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    Thanx for your help...I think i may go the TH400 route. And upgrade to the Art Carr valve body...Now i need to sell all my TH 350's and 203's
     
  8. mountainexplorer

    mountainexplorer 1/2 ton status

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    Everything I have has an SM465 (with the exception of the plow truck). I just like manuals better for some reason. I will admit that having an auto in the mud can be more beneficial in many ways. When I put together a "competetive" mud racer rig, it will have either a 350/205 or 400/205.
     

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