Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

88 K5 Is a 700R4 enough?

Discussion in 'The Garage' started by paveslave, Oct 11, 2003.

  1. paveslave

    paveslave Registered Member

    Joined:
    Oct 11, 2003
    Posts:
    36
    Likes Received:
    0
    Location:
    Crestview, FL
    I'm running 33's with 3.42 gears, will a 700R4 handle this? What are my options for upgrading?
     
  2. sled_dog

    sled_dog 1 ton status

    Joined:
    Sep 3, 2002
    Posts:
    16,870
    Likes Received:
    0
    Location:
    Austin, TX
    Yeah a 700R4 will handle tires way bigger than that(more than a few around here). Personally I say SM465 or NV4500 are the only ways to go /forums/images/graemlins/wink.gif. I love my 465 and wouldn't trade for anything but an NV4500.
     
  3. paveslave

    paveslave Registered Member

    Joined:
    Oct 11, 2003
    Posts:
    36
    Likes Received:
    0
    Location:
    Crestview, FL
    Pardon my ignorance, are those manual boxes?
     
  4. micah

    micah 1/2 ton status

    Joined:
    Sep 18, 2003
    Posts:
    374
    Likes Received:
    0
    Location:
    Austin, TX
    the tranny will handle it fine. the question is do you have an auxiliary cooler on it? if not, get one... most people recommend this one...

    B&M Super Cooler
     
  5. mudhog

    mudhog THEGAME Staff Member Super Moderator

    Joined:
    Nov 6, 2000
    Posts:
    17,899
    Likes Received:
    2
    Location:
    portland oregon
    [ QUOTE ]
    Pardon my ignorance, are those manual boxes?


    [/ QUOTE ]
    yes they are /forums/images/graemlins/thumb.gif
     
  6. rjfguitar

    rjfguitar 3/4 ton status GMOTM Winner

    Joined:
    Aug 28, 2002
    Posts:
    9,097
    Likes Received:
    144
    Location:
    california
    It should do just fine, plus the 88' 700 is better than the 86' and earlier th700's I have a built 700 with bigger tires than yours and it is fine. I would put either a shift kit or a corvette servo on it. That would really help it's durability and make the clutches last longer.
     
  7. paveslave

    paveslave Registered Member

    Joined:
    Oct 11, 2003
    Posts:
    36
    Likes Received:
    0
    Location:
    Crestview, FL
    No I don't have an aux cooler. Am looking at ordering a Monster Minion 700r with Corvette servo. The tires were upgraded from 235/75's (about 29") in July so the tranny hasn't had the added strain very long.
     
  8. paveslave

    paveslave Registered Member

    Joined:
    Oct 11, 2003
    Posts:
    36
    Likes Received:
    0
    Location:
    Crestview, FL
    Thanks for the enlightenment on the boxes.
     
  9. Triaged

    Triaged 1/2 ton status

    Joined:
    Feb 21, 2001
    Posts:
    3,808
    Likes Received:
    0
    Location:
    CA (LA/OC area)
    Your money would be much better spent changing axle gears than upgrading your tranny (assuming it works now). 4.10 gears will be good with 33" tires but if you want to go bigger later go with 4.56.
     
  10. Thunder

    Thunder 3/4 ton status

    Joined:
    Jul 20, 2000
    Posts:
    8,946
    Likes Received:
    1
    Location:
    Northeast Nevada
    With a good cooler and Regular fluid changes it should do ok
    But
    In my opinion I think you should do the gears first Too. I have a 89 700 with 3.73 GR and 33" tires.Been running this combo pretty hard for many years now. I would not want to run lower gears than the 3.73. Espically if my engine was still stock.I would go with 4.10 for a good all around gear with 33" and stock motor.
    Rather than change my gear ratio I built my engine /forums/images/graemlins/wink.gif.
     
  11. Pookster

    Pookster 1/2 ton status

    Joined:
    Nov 21, 2000
    Posts:
    3,195
    Likes Received:
    0
    Location:
    NYC, NY, USA
    Im running my 700R4 with 3.73 and 35" BFG Mt's. Of course, my bfg's are closer to 33.5" true height on the ground. Anyways, it all depends. I acutally like it eith 3.73's, and on my 600+ mile trek back and forth to NC, I got around 15-16mpg on the highway. I do a lot of highway cruising at around 70mph, its my perfect gear ratio.

    Oh yeah, I didnt realize how much heat my tranny produced, until I put in a stacked plate cooler. I kept the old tube finned one as well, as well as the one through the radiator. But ever since I've put it in, my tranny fluid looks, smells, and even tastes (just kidding) like new.
     
  12. reeser

    reeser 1/2 ton status

    Joined:
    Oct 8, 2001
    Posts:
    434
    Likes Received:
    0
    Location:
    Hayden Lake, ID
    yes a properly built 700r4 will handle my 454 1 ton's w/4.56's and 39's no prob!!!

    ps KEEP IT COOL!!!!!!!!!!!
     
  13. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

    Joined:
    May 19, 2001
    Posts:
    45,031
    Likes Received:
    366
    Location:
    Vancouver, WA, USA
    the 700r4 is a great transmission IMO, especially for those of us that want/need OD. To keep the beast running well though, you need mad cooling. I'd recommend the big stacked plate B&M cooler... 28,000# gvw model is $53 or so at summit and WELL worth the cost. I also think its worth the $ to install a remote filter and tranny temp guage. Summit sells these as a kit for $80 and its well worth the price IMO. I think the cooler/filter/temp guage combo + some good synthetic tranny fluid is the best way to extend the life of your 700R4. they are good trannys, so long as you give em the nice cool fluid that they need.

    j
     
  14. paveslave

    paveslave Registered Member

    Joined:
    Oct 11, 2003
    Posts:
    36
    Likes Received:
    0
    Location:
    Crestview, FL
    I've lost 3rd and 4th gears for a second time (rebuilt a year ago), so I may as well put something better than stock in it.
     
  15. micah

    micah 1/2 ton status

    Joined:
    Sep 18, 2003
    Posts:
    374
    Likes Received:
    0
    Location:
    Austin, TX
    [ QUOTE ]
    I've lost 3rd and 4th gears for a second time (rebuilt a year ago), so I may as well put something better than stock in it.

    [/ QUOTE ]

    What tranny cooler do you have installed? And who setup your TV cable. Those two things are what matters most in the life of a 700r4.
     

Share This Page