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700R4 with non-lockup.....

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by ftn96, Apr 2, 2001.

  1. ftn96

    ftn96 1/2 ton status

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    I hate the characteristics of the lock-up converter. Has anyone or does anyone know draw backs I might encounter If I replace the lock up with a non-lock up converter and install a big cooler? I already have the aluminum deep pan.

    Will work for beer, parts and tools.
    90 Jimmy 350TBI-700R4-241-33" BFGs-10 bolts w/4.10's
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  2. ftn96

    ftn96 1/2 ton status

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    Come AWN!!!!!! Nobody?

    Will work for beer, parts and tools.
    90 Jimmy 350TBI-700R4-241-33" BFGs-10 bolts w/4.10's
    <A target="_blank" HREF=http://www.nashvillek5.freeservers.com>http://www.nashvillek5.freeservers.com</A>
     
  3. jarheadk5

    jarheadk5 1/2 ton status

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    I think mileage will be the only thing that suffers.

    [​IMG] Semper Maintenance!
     
  4. ftn96

    ftn96 1/2 ton status

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    I aint worried about that too much.

    Will work for beer, parts and tools.
    90 Jimmy 350TBI-700R4-241-33" BFGs-10 bolts w/4.10's
    <A target="_blank" HREF=http://www.nashvillek5.freeservers.com>http://www.nashvillek5.freeservers.com</A>
     
  5. CaptCrunch

    CaptCrunch 1/2 ton status

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    I can't say for sure, but I really don't think that is a very good idea. The 700r4 is very, very heat sensative... I think it is a big gamble considering the heat buildup of a non-lock up converter. If you want to go that route just get a built th350... they are pretty cheap in classifieds (about 300-400 for a rbuiilt w/ shift kit, etc here) and will be stronger then a stock 700 by far. You can probably sell the 700 for more and make a few bucks on the deal [​IMG].

    [​IMG]
    1987 Chevy K5 Blazer- 350 TBI
     
  6. ftn96

    ftn96 1/2 ton status

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    Thats what I was thinking, but I was also looking into the idea of swapping in a 400 when I get my new motor finished up. The new motor is going to be pushing about 350 and 350 if all goes as planned. And I figured the 700 may be a little too leary for the new life. But I have a good setup now with the overdrive , 33's and the 4.10's.

    Will work for beer, parts and tools.
    90 Jimmy 350TBI-700R4-241-33" BFGs-10 bolts w/4.10's
    <A target="_blank" HREF=http://www.nashvillek5.freeservers.com>http://www.nashvillek5.freeservers.com</A>
     
  7. Emmettology 101

    Emmettology 101 3/4 ton status

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  8. ftn96

    ftn96 1/2 ton status

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    But I could just eat the 500 I have in the rear 10 bolt and find a 12 bolt with 3.73's. I can setup my own gears, hell I may just re-gear the 10 bolts. I dont know, too many things to juggle at once. I'll get the motor up adn running with the 700, let it rip till the guts fall out then figure it from there. But it sure would be easier to swap that TC out while the engine was out.

    Will work for beer, parts and tools.
    90 Jimmy 350TBI-700R4-241-33" BFGs-10 bolts w/4.10's
    <A target="_blank" HREF=http://www.nashvillek5.freeservers.com>http://www.nashvillek5.freeservers.com</A>
     
  9. CaptCrunch

    CaptCrunch 1/2 ton status

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    With that kinda hp and only 33's you could get a 700r4 built up and would be great. Why you hate the lock-up setup? I personally love the 700R4's for just about anything... of course I'm getting to know them very well too LOL. Don't see anyreasons to run anything else behind a small block.

    [​IMG]
    1987 Chevy K5 Blazer- 350 TBI
     
  10. ftn96

    ftn96 1/2 ton status

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    As far as the lock up, it seems to get confussed as to when to lock up and when to release. But I have had others with 700's say thats the way it works. I dont like how it feels like your coasting with no gas and no brake and then all of a sudden it feels like I have a manual shift and Im going thru compression braking characteristics, then If even look at the gas or the brake then it unlocks, and back and forth back and forth. Jsut doesn't feel right to me. Hell the damn thing may be screwed up . But everything else seems fine. It will if I really try hard, churp the 33 muds from 1st to 2nd in a straight, and hell after this morning, get sideways coming out of a turn if I nail it. LOL!!! Im still tripping on that one.

    Will work for beer, parts and tools.
    90 Jimmy 350TBI-700R4-241-33" BFGs-10 bolts w/4.10's
    <A target="_blank" HREF=http://www.nashvillek5.freeservers.com>http://www.nashvillek5.freeservers.com</A>
     
  11. muddin4fun

    muddin4fun 3/4 ton status

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    Efficiancy would be lost and the dreaded enemy of all auto trannies...more heat!

    [​IMG]


    <A target="_blank" HREF=http://muddin4fun.coloradok5.com>http://muddin4fun.coloradok5.com</A>
     
  12. ftn96

    ftn96 1/2 ton status

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    I was hoping the cooler would counter act the heat part.....
    Screw the B.S. I'll just save up and get a 400 and go back to 3.73's.

    Will work for beer, parts and tools.
    90 Jimmy 350TBI-700R4-241-33" BFGs-10 bolts w/4.10's
    <A target="_blank" HREF=http://www.nashvillek5.freeservers.com>http://www.nashvillek5.freeservers.com</A>
     
  13. CaptCrunch

    CaptCrunch 1/2 ton status

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    That's kinda how they are, but it shouldn't be that extreme. Mine does it some what, but we are also gonna do some tinkering with it. We may even just core this one and change over parts to another because it was so jacked up by the last rebuild. I have never really noticed it in most of my other 700r4's. The first gear is really nice for taking off... one guy switched his first gear to steeper in his 400 tranny and it rocked! I'd probably talk to the racers and offroaders and see who has a good tranny shop in the area... they are really hard to find these days, but they well worth it... most of them should be able to give you an idea of what is exacly going on from driving it.

    [​IMG]
    1987 Chevy K5 Blazer- 350 TBI
     
  14. ftn96

    ftn96 1/2 ton status

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    Around here the 400s are starting to get hard(er) to find but I can call right now and get one for 350 plus core.

    Will work for beer, parts and tools.
    90 Jimmy 350TBI-700R4-241-33" BFGs-10 bolts w/4.10's
    <A target="_blank" HREF=http://www.nashvillek5.freeservers.com>http://www.nashvillek5.freeservers.com</A>
     
  15. jarheadk5

    jarheadk5 1/2 ton status

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    Maybe the switch on the brake pedal is out of adjustment?? Mine doesn't do any of those things, especially in Drive (Not OD).

    [​IMG] Semper Maintenance!
     
  16. taterblazer

    taterblazer 1/2 ton status

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    Why the dreadful dislike of the TH400? I run down the interstate at 70 in third on my 700R4. If you need lower RPM's just put bigger tires on! How come it creates that much more heat with out a lockup converter? Doesn't it only lock in 4th?
     
  17. dyeager535

    dyeager535 1 ton status Premium Member

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    I believe by installing a check ball in the snout of the TCC solenoid, you force a pretty firm lockup in 4th gear only, without electrical input. I can ask my friend that owns the tranny shop if I remembered that correctly.

    Dorian
    My K5 and Chev/Olds tech/links page: <A target="_blank" HREF=http://www.dorianyeager.com/index2.html>http://www.dorianyeager.com/index2.html</A>
     
  18. CaptCrunch

    CaptCrunch 1/2 ton status

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    I believe the converter locks up in 3rd or fourth gear. 400's are great for power... but the nice gearing of the 1st and fourth gears in the 700 make it the ultimate for street use... good off the line and good freeway.

    [​IMG]
    1987 Chevy K5 Blazer- 350 TBI
     
  19. dyeager535

    dyeager535 1 ton status Premium Member

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    Electrically yes. If set up hydraulically, only in 4th gear. I remember him telling me it was like a 5 speed afterwards...1-4 normally, the lockup coming in as a very quick shift after you hit 4th.


    Dorian
    My K5 and Chev/Olds tech/links page: <A target="_blank" HREF=http://www.dorianyeager.com/index2.html>http://www.dorianyeager.com/index2.html</A>
     
  20. ftn96

    ftn96 1/2 ton status

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    Now that sounds pretty cool. But from what you all have said, maybe mine is not working correctly. I'll have it checked to see. Then make a decision.

    Will work for beer, parts and tools.
    90 Jimmy 350TBI-700R4-241-33" BFGs-10 bolts w/4.10's
    <A target="_blank" HREF=http://www.nashvillek5.freeservers.com>http://www.nashvillek5.freeservers.com</A>
     

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