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700R4, 4.88's, and 35" tires

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by fr8train, Aug 2, 2001.

  1. fr8train

    fr8train 1/2 ton status

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    700R4, 4.88\'s, and 35\" tires

    Who, if anyone, is running this setup? Any pros/cons?
     
  2. solowookie

    solowookie 1/2 ton status

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    Re: 700R4, 4.88\'s, and 35\" tires

    I just did a 700r4 with 33 BFG A/T's today and went with 4.10's. it seems to be a good combination, and I like the RPM range on the highway.

    don't know if that help, but I hope it does. have you tried using an RPM calculator to figure the RPM range out with how you are going to use the thing??? <a target="_blank" href=http://www.4lo.com>http://www.4lo.com</a>

    [​IMG] <font color=blue> Jeff </font color=blue> [​IMG]
     
  3. fr8train

    fr8train 1/2 ton status

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    Re: 700R4, 4.88\'s, and 35\" tires

    I did that calc. thing on <a target="_blank" href=http://www.4lo.com>www.4lo.com</a>. I am going ot do 90/10 ratio of road/offroad.
     
  4. solowookie

    solowookie 1/2 ton status

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    Re: 700R4, 4.88\'s, and 35\" tires

    <blockquote><font class="small">In reply to:</font><hr>

    I am going ot do 90/10 ratio of road/offroad.

    <hr></blockquote>

    ??? what do you mean by this??? [​IMG]

    [​IMG] <font color=blue> Jeff </font color=blue> [​IMG]
     
  5. Rockjunkies

    Rockjunkies 1/2 ton status

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    Re: 700R4, 4.88\'s, and 35\" tires

    90% onroad-----10% offroad

    Keep it simple!
     
  6. fr8train

    fr8train 1/2 ton status

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    Re: 700R4, 4.88\'s, and 35\" tires

    Mostly highway and around town driving. When I actually get something that is remotely considered a vacation is when I might get a chance to hit the off-road. Which is the main reason for me running AT's instead of MT's or swampers for my regular tire.
     
  7. solowookie

    solowookie 1/2 ton status

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    Re: 700R4, 4.88\'s, and 35\" tires

    man I would think the 4.88's would be a bit high for that. I think I'd go with 4.56's. I was kinda facing the same decision when I went to 4.10 because I was considering 4.56's also. when it really got down to it the 4.10's a better on-road characteristics.

    [​IMG] <font color=blue> Jeff </font color=blue> [​IMG]
     
  8. fr8train

    fr8train 1/2 ton status

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    Re: 700R4, 4.88\'s, and 35

    You have a SM465 though, right? I have a built TCI 700R4 and I like my OD. The general concesus is the 4.56 setup. I am thinking if my off-road choice of tire were of the 36-38 variety I would be covered for that trip to an from the trail and still be ok for running 35" tires.

    Sorry Jeff just read your profile. Got you confussed with scoobydan I guess you do have the 700r4.

    What is your rpm at 55mph, 65mph, and 75 mph?

    <P ID="edit"><FONT class="small">Edited by fr8train on 08/02/01 11:11 PM.</FONT></P>
     
  9. ScoobyDann

    ScoobyDann 1/2 ton status

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    Re: 700R4, 4.88\'s, and 35\" tires

    i ahve the 465 w 4.56 gears and 35s and it's OK on the freeway but the ony time i go on the freeway im gonna wheel on the other side of town. i would get 4.10 if you drive a lot on the freeway w/ a 465

    sun desert offroad http://community.webshots.com/user/scoobydann
     
  10. solowookie

    solowookie 1/2 ton status

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    Re: 700R4, 4.88\'s, and 35

    I got both, I got 2 k5's. (sm465 and 700r4)

    if you were going 36-38's then yea I'd definately go 4.88's. I was thinking you were just talking 35's, and 35's and 4.88's would be a bit low I would think.

    [​IMG]<font color=blue> Jeff </font color=blue> [​IMG]
     
  11. fr8train

    fr8train 1/2 ton status

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    Re: 700R4, 4.88\'s, and 35

    What is your rpm at 55mph, 65mph, and 75 mph(700R4)? Iwant real world readings
     
  12. solowookie

    solowookie 1/2 ton status

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    Re: 700R4, 4.88\'s, and 35

    you know I don't have a tach, but in a couple weeks I'll be switching to VDO gauges, and a tach will be incorperated so hold on to that quesiton.

    <font color=blue> Jeff - may the force be with you</font color=blue>
     
  13. fr8train

    fr8train 1/2 ton status

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    Re: 700R4, 4.88\'s, and 35

    cool

    I will just PM it to you and you can send it back when you have the data/time. Thanks in advance.
     
  14. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Re: 700R4, 4.88\'s, and 35

    That'd be about 2500 at 65 and be awesome. It'd also allow you to go all the way to 38s if you really wanted and still pull overdrive.

    If I ever change my gears, I'm getting 4.88s. I have 4.10s and 35s now with a 700R4 (future NV 4500).

    Tim
    '84 Chevy K10, lifted, loud, fast, and 3/4 ton axles
     
  15. ecreipevad

    ecreipevad Registered Member

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    Re: 700R4, 4.88\'s, and 35\" tires

    Look at it this way. If you go with 4:88's and you find out it's too low of a ratio for you. You can fix it real easy, no gear change required.......... You buy bigger tires, more lift. Isn't it a wonderful world.

    Chrome Won't Get You Home!!!!
     
  16. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Re: 700R4, 4.88\'s, and 35\" tires

    My point exactly. Too low? Bigger tires! Too high? You're screwed!

    Tim
    '84 Chevy K10, lifted, loud, fast, and 3/4 ton axles
     
  17. Highlander

    Highlander 1/2 ton status

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    Re: 700R4, 4.88\'s, and 35\" tires

    Well I not running 4:88's but I do have 35's with 4:10's and I think that I'd would rather have 4:56. Eric

    <a target="_blank" href=http://cethern.tripod.com/erics-home-page-and-other-stuff/>http://cethern.tripod.com/erics-home-page-and-other-stuff/</a>
    AMSOIL Dealer # 529948
    Cethern@interfold.com
     
  18. txbartman

    txbartman 1/2 ton status

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    Re: 700R4, 4.88\'s, and 35\" tires

    I am running 35s with a 305 and 700R4. I currently have 3.73s, but am soon going to 4.56s. If you have 10 bolts, I wouldn't go lower than that. I have heard that 4.88s with tall tires are really pushing it. My plan is to go with 4.56s with my 35s and 10-bolts. If I ever go bigger tires, I plan to get bigger axles. Then I will go with taller gears.

    Just my .02

    Brian
    Click to see <a target="_blank" href=http://tx85gmcguy.alloffroad.com> My 85 Jimmy </a>
     
  19. CaptCrunch

    CaptCrunch 1/2 ton status

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    Re: 700R4, 4.88\'s, and 35\" tires

    I have 4.10's w/ 35" Pro Comp MT's and a 700r4 and I run roughly 2 grand or a tich under at 60 -65 mph... FYI I'm stepping up to 4.56's for when I get some true 35's or 36's. I would go 4.56's for your plans.

    -Mikey
    1987 Chevy K5 Blazer- 350 TBI
    <a target="_blank" href=http://www.geocities.com/milnerlives_2000/blazer.htm>http://www.geocities.com/milnerlives_2000/blazer.htm</a>
     
  20. Re: 700R4, 4.88\'s, and 35\" tires

    I agree wiff Captcrunch, 4.88 would be too high for 35's. You also have to take in account that the 35's tires may not actually be 35's, depending on the brand that you get.
    Im gonna be running 36's, (actuall 36.3) with 4.56 and 700R4 and my rig is a 50/50 ride

    Damn I need to learn how to use my welder!![​IMG]
    (90 Jimmy 350 TBI, 14 FF/10 bolt, 4.56, tires ??
    (ftn96)
     

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