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TH400 vs. SM465

Discussion in 'The Garage' started by bigburban383, Feb 9, 2004.

  1. bigburban383

    bigburban383 1/2 ton status

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    I am sure this has been brought up, but the search did not find it. What are the comparitive dis/advantages. I know a 400 you got to shorten your driveshaft, but do you really have to if you got a lift wouldn't it make up for that. What about driveshafts for the 465 conversion? Give me more /forums/images/graemlins/bow.gif
     
  2. burbBoy

    burbBoy 1/2 ton status

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    sm465! I love em so much i had to have 2 /forums/images/graemlins/wink.gif They are bullet proof. No worries about overheating it like an auto. Driveshafts arent that dificult to find/make for a 465/205 combo. This going in your burb? If you choose the 465 let me know i might have some shafts that are the right length for that set up.
     
  3. bigburban383

    bigburban383 1/2 ton status

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    Yes I am going to put it in my suburban, only when i blow up my 700 because I got a bad feeling I am. The engine I am building is going to have 400 ftlbs of torque, that and its moving a suburban with only 4.10s. Not to mention the traction bars.
     
  4. rjfguitar

    rjfguitar 3/4 ton status GMOTM Winner

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    [ QUOTE ]
    The engine I am building is going to have 400 ftlbs of torque, that and its moving a suburban with only 4.10s. Not to mention the traction bars.

    [/ QUOTE ] Relax, a properly built th700 can take 400ft pounds just fine. I am right around 400ftlbs myself with 4.10's and heavy 35" boggers... and have had no issues whatsoever with my built th700.
     
  5. Confedneck

    Confedneck 3/4 ton status

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    465 all the way.. or 700r4.. if you have to have an auto, get overdrive.. a good BTO unit is about 1800 bucks plus installation parts, etc, and WELL worth it.. i love my 4 spd, well ok 3 with a granny.. even though i cruise the interstate between 2-3k..
     
  6. 84_Chevy_K10

    84_Chevy_K10 Banned

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    2-3k is where you're supposed to cruise. /forums/images/graemlins/rotfl.gif /forums/images/graemlins/thumb.gif
     
  7. Confedneck

    Confedneck 3/4 ton status

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    EHH..the motor makes almost NO power above 3800.. its almost like a diesel.. i really do wish it would cruise just a cunthair lower.. maybe 1800 or so.. 2000 rpms is about 65 on the speedo which i guess is 70 or so being i have 3.40s and 33s..
     
  8. sled_dog

    sled_dog 1 ton status

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    my only problem is with my daily driver I want a 5 speed. If I keep my burb and daily drive it I'm gonna upgrade to an NV4500.
     
  9. Confedneck

    Confedneck 3/4 ton status

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    if i could find a complete writeup with all the part numbers for an nv4500 conversion.. i would consider doing it..
     
  10. sled_dog

    sled_dog 1 ton status

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    I went to work a couple minutes ago and I shifted down into 3rd 3 times looking for 5th gear. It just felt like I should be shifting. I'm just gonna look out for an NV4500 then get parts from Advanced Adaptors. Though I guess a 5 speed from a newer Chevy should work fine since they have 241 tcases.
     
  11. Confedneck

    Confedneck 3/4 ton status

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    i thought the newer chevys were nv4500s??
     
  12. sled_dog

    sled_dog 1 ton status

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    They are, I meant if I got one for a newer Chevy I probably wouldn't have a problem bolting my 241 to it with my present adapter.
     
  13. Confedneck

    Confedneck 3/4 ton status

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    ohh gotcha! /forums/images/graemlins/thumb.gif
     
  14. sled_dog

    sled_dog 1 ton status

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    Maybe this is how we got so many posts?
     
  15. 84_Chevy_K10

    84_Chevy_K10 Banned

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    [ QUOTE ]
    EHH..the motor makes almost NO power above 3800.. its almost like a diesel.. i really do wish it would cruise just a cunthair lower.. maybe 1800 or so.. 2000 rpms is about 65 on the speedo which i guess is 70 or so being i have 3.40s and 33s..

    [/ QUOTE ]

    I think 2200-2800 is ideal. Then again, all of my trucks have 4.10 gears and none have overdrive. C30 has 31.5s and the K10 has 38.5s.
     
  16. Confedneck

    Confedneck 3/4 ton status

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    [ QUOTE ]
    Maybe this is how we got so many posts?

    [/ QUOTE ]
    hows that?? LOL /forums/images/graemlins/rotfl.gif /forums/images/graemlins/rotfl.gif /forums/images/graemlins/rotfl.gif /forums/images/graemlins/rotfl.gif /forums/images/graemlins/dunno.gif
     
  17. bigburban383

    bigburban383 1/2 ton status

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    [ QUOTE ]
    [ QUOTE ]
    The engine I am building is going to have 400 ftlbs of torque, that and its moving a suburban with only 4.10s. Not to mention the traction bars.

    [/ QUOTE ] Relax, a properly built th700 can take 400ft pounds just fine. I am right around 400ftlbs myself with 4.10's and heavy 35" boggers... and have had no issues whatsoever with my built th700.

    [/ QUOTE ]

    Okay, I hope mine lasts, I am not going to baby it though(got to pull boggerless). I got a cooler on it /forums/images/graemlins/thumb.gif . It is supposedly a 700R4HD too, out of my K5, it had written on the top 700R4HD. I guess I can just start off in manual one so I dont blow up the one way roller.
     
  18. James670X

    James670X 1/2 ton status

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    I wouldn't go with the 700R4 as these trannies have problems (same with the 4L60 and 4L80Es). I've got the SM465 in my 88 Chev reg. cab K30 dually (454 efi, w/4.10s) and my only complaint about it is I wish that it was a 5spd. because I can do 60 km/h (under 30mph) in 4th gear, so when it comes to highway driving the engine is revving pretty hard.
     
  19. sled_dog

    sled_dog 1 ton status

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    3.42s, 350, 31s, I'm in 4th gear by the time I hit 30 MPH.
     
  20. Confedneck

    Confedneck 3/4 ton status

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    hmm. bto, bowtie overdrives will build you a 700r4 rated for 600 hp... so they can be made strong..

    with 3.40s, 33s and a 350, i can pull the speedo to around 60-65 in 2nd gear and then shift into 3rd (shift pattern being L, 1, 2, 3)
     

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