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  1. DesertDueler

    DesertDueler 1/2 ton status

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    I got a 12 bolt with 3.73 gears (Thanks Impex). My fonts are 3.08s so I have to do a gear change. I was wonderin what I should go with. I have 350, 700r4, NP 208, and 35s. I was thinking 4.56s, 4.88s, or 5.13s. What do you guys think?

    86 Jimmy 4"lift 35"MTRs Other cars 69Firebird w/525 hp,and 70GTO live in PHX,AZ<a target="_blank" href=http://www.geocities.com/modifierperformance>My vehicles</a>
     
  2. POWERMAD

    POWERMAD 1/2 ton status

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    If you plan on staying with that size of tire, then with your combo 4:56's would work well.

    <font color=green> Too bad ignorance isn't painful </font color=green>
     
  3. J.R.

    J.R. Guest

    i would go with 4.56's, just make sure who ever you have put them in they know what they're doing or they wont live long under the stress.

    BIG BLOCK MAN
    "MORE POWER"!!
     
  4. DesertDueler

    DesertDueler 1/2 ton status

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    I am not worried about not puting them in correctly. Me and my dad setup rear ends for race cars all the time. I was just looking to see if I should go bigger than 4.56s? Its not a daily driver anymore, but I still have to drive it a couple of hours on the freeway to some of the trails.

    86 Jimmy 4"lift 35"MTRs Other cars 69Firebird w/525 hp,and 70GTO live in PHX,AZ<a target="_blank" href=http://www.geocities.com/modifierperformance>My vehicles</a>
     
  5. bigjbear

    bigjbear 1 ton status Staff Member Moderator

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    With the O/D trans I would go for the 4.88s. It is still livable at highway speeds. I carpool with a guy with a similar setup. Since its not a daily driver the only way I would go with the 4.56s &amp; a TH700 is if you plan on doing a lot of high speed trailer towing or if you plan on going with a smaller tire.

    Jim '80 GMC & '73 Blazer
    Tread Lightly!
    <a target="_blank" href=http://www.tellicok5.rockcrawler.com>www.tellicok5.rockcrawler.com</a>
     
  6. DesertDueler

    DesertDueler 1/2 ton status

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    Cant tow with it anymore. It has no door, no fiberglass top, and a plexyglass wondshield. I will not go with smaller tires either.

    86 Jimmy 4"lift 35"MTRs Other cars 69Firebird w/525 hp,and 70GTO live in PHX,AZ<a target="_blank" href=http://www.geocities.com/modifierperformance>My vehicles</a>
     
  7. CaptCrunch

    CaptCrunch 1/2 ton status

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    What about a bigger tire? Do you ever think you might step to 36 or 37" tires? Just something to think about. Persoanlly for your rig I would go 4.56's... good highway rpm and that nice steep first gear of the 700R4 would be nice from a stop... 2 or 4 wd. Add ina 208 case and I think you will be more then happy w/ it. If you plan to go 37's you might kick around the idea of 4.88's ... but that's my $.02 worth. I currently have 35" MT's that sit about 33.5" tall and 4.10's and it is a bit shallow for my tast. 4.56's would be sweet for a 35 or 36 Swamper IMO.

    -Mikey
    1987 Chevy K5 Blazer- 350 TBI
    <a target="_blank" href=http://coloradok5.com/gallery/captcrunch>http://coloradok5.com/gallery/captcrunch</a>
     
  8. DesertDueler

    DesertDueler 1/2 ton status

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    I may go to 37s. If I go any bigger than 37s I will put 1 ton axles in it. I am keeping the 1/2 ton beccause I like the ground clearance.

    86 Jimmy 4"lift 35"MTRs Other cars 69Firebird w/525 hp,and 70GTO live in PHX,AZ<a target="_blank" href=http://www.geocities.com/modifierperformance>My vehicles</a>
     
  9. DesertDueler

    DesertDueler 1/2 ton status

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    Anybody else?

    86 Jimmy 4"lift 35"MTRs Other cars 69Firebird w/525 hp,and 70GTO live in PHX,AZ<a target="_blank" href=http://www.geocities.com/modifierperformance>My vehicles</a>
     
  10. CCRider

    CCRider 1/2 ton status

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    I'm runnin' 37"ssr's and 4:88's and it works out great!!!Highway isn't compromised at all and is great offroad!!! 35's will be ok , as I had 4:56's w/35"bfg m/t's , and needed a little more gear. CC

    1991 Fullsize 5 1/2"lift, 37"ssr's,10Bolt8 lug , 14Bolt ff, 4:56 Detroit rear, 12"fr. 14"r Bilstein remote res.350 P.F.I , 700r4 , 241c W/ sye
     
  11. TorkDSR

    TorkDSR 1/2 ton status

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    gears aren't all they're cracked up to be. please keep in mind i don't run an 700r-4. I ve been running 3:07's with 38's on and off for a year and a half. depending on what you do with the truck makes a big difference. I like flat trails with lots and lots of mud, so i like tire speed. but 4:88's or bigger with 35" tires seems like over kill.

    Tork DSR
    I just got a winch, it takes the fun out of things.
     
  12. DesertDueler

    DesertDueler 1/2 ton status

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    I have run 3.08s for 3 years now. I havent had a problem with them because I have the low first gear of the 700r4 and the 208 with the 2.61 low range. I figured now I have to change gears I would go bigger. I do alot of rockcrawling. I need a little tire speed to get up some of it because of the loose gravel on top. Not a whole lot of mud here in AZ. I also figured if I play in the mud I can use 4 hi.

    86 Jimmy 4"lift 35"MTRs Other cars 69Firebird w/525 hp,and 70GTO live in PHX,AZ<a target="_blank" href=http://www.geocities.com/modifierperformance>My vehicles</a>
     
  13. jarheadk5

    jarheadk5 1/2 ton status

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    If you're doing a lot of rocks, 4.88 or 4.56 is probably your best bet.


    September 11, 2001--"A date which will live in infamy"
     
  14. 84_Chevy_K10

    84_Chevy_K10 Banned

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    I have 4.10s and 35s and I am always aching for just a little more gear. I'd go at least 4.56s, but if you're even toying with the idea of bigger tires, go with 4.88s.

    If I was keeping my 700, I'd go with a little more gear. I'm swapping in an SM 465, so I'm keeping my 4.10s now.

    In mud, I'd rather have too low of a gear than too high. You can always shift up for more wheel speed. I have used 4 HI before as well.



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

    TorkDSR 1/2 ton status

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    mud needs sick amounts of wheel speed, 4:88's slow it down. I always run 4-hi in the goo, and if i was serious about stricly mud, it go to ff with 3:08 and mad horses

    Tork DSR
    I just got a winch, it takes the fun out of things.
     
  16. gokartergo

    gokartergo 3/4 ton status Staff Member Moderator

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    Go with the 4.88"s.. I have the stock 10 bolts and run 33's. I went with 4.56"s I kinda wish I had gone with the 4.88's There isn't a whole lot of diffrence. But still every little bit helps...Dan

    If it ain't broke.......Don't fix it....
    <a target="_blank" href=http://coloradok5.com/gallery/Gokartergo>KLICK</a>
     
  17. DesertDueler

    DesertDueler 1/2 ton status

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    I decided to go with the 4.56s. Thanks guys. I talked to motive gear and they said that 4.88s dont hold up well in the 10 bolts. The pinion is too small. I figured that the extra strength is worth way more than the extra gear. I will go with 5.13s when I go to 1 ton, but for now this will do. Doesnt cost much to swap gears for me. Gears are 115 a set, and bearing kits are 50 bucks.

    86 Jimmy 4"lift 35"MTRs Other cars 69Firebird w/525 hp,and 70GTO live in PHX,AZ<a target="_blank" href=http://www.geocities.com/modifierperformance>My vehicles</a>
     

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