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Transmission poll

Discussion in 'The Garage' started by neverendingproject, Jun 19, 2006.

?

Which transmission?

  1. 700r4

    21 vote(s)
    30.4%
  2. nv4500

    26 vote(s)
    37.7%
  3. other

    16 vote(s)
    23.2%
  4. nekkid and dont care

    6 vote(s)
    8.7%
  1. neverendingproject

    neverendingproject 1/2 ton status

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    Im going to need a new transmission soon as mine is mostly stock and ive got a 383 in front of it. I would like some honest opinions on what transmission should be next.

    I have 3.73's and I would like a nv4500 but they cant be found, and a guy can rebuild a 700r4 with EVERYTHING for a fair price.

    I found a place where I can get the 4500 used for 700 and and the 700r4 new and super-built for about 700-800.

    My only considerations is getting a different bellhousing for the 4500 and making new crossmembers or shell out money and "hope it doesnt break" for the 700r4.

    or are there any other suggestions?
     
  2. 1985_K5_Silverado

    1985_K5_Silverado 1/2 ton status

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    You won't have to "hope it doesn't break" if your trans guy can build that 700R4 properly beefed, like these:

    http://www.bowtieoverdrives.com/

    (edit - spelling error)
     
    Last edited: Jun 19, 2006
  3. TeK

    TeK 1/2 ton status

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    sm465 for the win.
     
  4. Thunder

    Thunder 3/4 ton status

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    If you decide to go with a 700R4.............
    IMHO dont rebuild the 700R4 if it is the orginal one that came in your truck. I am assuming were are talking about the 700r4 in your 84 K5 listed in your bio.
    The old 700s had many weaknesses that rebuilding and even beefing up wont cure. You need a 88 or newer tranny. They had beefier stronger parts better pumps and internal changes to fix the problems with the older units.
    IMO your best options are:
    To get a tranny from Bowtie overdrives as said in above post.
    Or
    Buy a new 700r4 (4L60) from GM.
    or
    Find a 88+tranny at a junkyard and have it rebuilt/upgraded.
    I would not waste any money having aan older model 700 rebuilt.
    Also
    Be sure to get a new torque convertor and flush out the trans cooler/lines
     
  5. Chevy305

    Chevy305 6 Lug 14bsf Status Premium Member GMOTM Winner

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    I'd go with the SM465, but it has no OD, so NV4500 is your best option.

    I wouldn't even consider a slushbox. You will not regret having a stick, no in a million years. :)
     
  6. neverendingproject

    neverendingproject 1/2 ton status

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    Even if I went with the 700, what stall speed should I go with?
     
  7. Jishory

    Jishory 1/2 ton status

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    id say go with the sm465 if od isnt a biggie... nv4500 otherwise

    cant beat the control and dependability of a manual
     
  8. Thunder

    Thunder 3/4 ton status

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    What cam are you running? Your cam usually determins the stall speed for best performance. In a 4x4 i would go the lowest recomended stall.
     
  9. muddybuddy

    muddybuddy 3/4 ton status

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    built 700
     
  10. neverendingproject

    neverendingproject 1/2 ton status

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    Im running gmpp 383 cam which is supposed to make over 400 lb-ft from 2500rpm on up.
     
  11. berserker

    berserker 1/2 ton status

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    go with the manual nv4500 or bomb proof sm465:waytogo:
     
  12. chevy wrangler

    chevy wrangler 1/2 ton status

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    i hav a sm465 and it is great!!!super low 1st gear!!!
     
  13. neverendingproject

    neverendingproject 1/2 ton status

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    I just talked to the trans. guy and he said he could do a 4l80e for a little less than the 700 but it would be a manual valve body ( no electronics), so this is now an option.
     
  14. 76zimmer

    76zimmer Flyin Rat Premium Member GMOTM Winner

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    now your talking....
     
  15. stevos67k20

    stevos67k20 1/2 ton status

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    i'm looking for an nv4500 myself. they are so dang expensive. i live in southern california and all the transmissions are out of state it seems (well, on ebay). i havent seen one below 1200 rebuilt. the conversion kit for a 205 ten spline is about 1000 also. maybe ill just have to start picking my money tree in my back yard....j/k. anyone with experience building a trans crossmember? what kind of mount should i use for an NV4500? thanks to anyone who knows.
     
  16. cheyennek20

    cheyennek20 1/2 ton status

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    X3 , If it'll last behind a BBC, then a 383 won't kill it.:D
     
  17. CUCV2

    CUCV2 1/2 ton status Premium Member

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    Do a search on the manual valve body. I read they can be a PITA to install right. If you have the right transmission guy and get past that, the shifts may be somewhat rough. If that is OK with you then, you may need a floor shifter to make the shifts. Manual valve body + Install + Shifter = close to what a TCI controller is. CompuShift controller sounds better than a TCI. What does all this mean? 4L80E can be an expensive choice. But then again so can the NV4500. I opted for the 4L80E with the compushift.

    Oh yeah, and there are the driveshaft lengths to look into. Some times keeping it simple is the best option. If you have the 700R4, a built one might be the best bet.

    My $.02
     
  18. Ronnie4wd

    Ronnie4wd 1/2 ton status GMOTM Winner

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    Look at the dates of the poll I think he already has the 4l80 in the rig :wink1:
     
  19. CUCV2

    CUCV2 1/2 ton status Premium Member

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    Good call :bow:
     
  20. neverendingproject

    neverendingproject 1/2 ton status

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    Actually, I went with the computer option. There is more tuning I have to do cause it acts wierd sometimes, but overall, its kicks some serious a$$. I love the 4l80e and not ever having to worry about a higher HP motor breaking it is an amazing feeling.

    Btw I ended up getting the rebuilt and enhanced 4l80e for free, and I only had to buy the controller.
     

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