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Whats Best Upgrade From Corporate 10 Bolt??

Discussion in 'The Garage' started by 1985K20, Feb 22, 2005.

  1. 1985K20

    1985K20 1/2 ton status

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    Just wandering what's the best bolt on upgrade from a gm corporate 10 bolt for the front diff?? (my truck's a 85 3/4 ton, got a 14 bolt ff at rear):confused:

    Or is a 10 bolt good enough to handle 35'S??

    ***i dont drive her to hard neither***
     
  2. 1985K20

    1985K20 1/2 ton status

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    Just want to add this:3.21 final ratio
     
  3. Hossbaby50

    Hossbaby50 3/4 ton status

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    I run a 10 bolt front with 35's. As long as you are not a throttle jokey it will be fine. As for best upgrade there are lots of different options depending on what you do with the truck.

    The upgrades I have done with my 10 bolt front are beefy tierod, beefy diff cover, locker, gears, crossover steering, and a little shave work. All of this stuff may not be necessary depending on what you want to do with your truck.

    Harley
     
  4. mightywhitey_k5

    mightywhitey_k5 Registered Member

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  5. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Your 10 bolt will hold up to 35s just fine.

    If your gears suck, re-gear.
     
  6. Hossbaby50

    Hossbaby50 3/4 ton status

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    He is talking about his front 10 bolt axle, not a rear. He already said he has a 14b out back. There is no 14bff front axle (except custom hybrids).

    Harley
     
  7. 1985K20

    1985K20 1/2 ton status

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    Thanks for the replies guys, i'll probably keep the 10 bolt...and eventually regear to 3.42's or 3.73's.I just wanted to make sure that a 10 bolt was 35's friendly
     
  8. Hossbaby50

    Hossbaby50 3/4 ton status

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    35" tires will be ok on a 10 bolt front. 35" tires will make it possible to break things though, so keep that in mind. Good maintanence is the key to longevity.

    Harley
     
  9. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    yeah, for 35s your fine. Personally I wouldnt spend the $ to regear a 10 bolt tho... you could easily find someone with the new gear you want selling their axle dirt cheap as they upgrade to a D60...

    j
     
  10. stallion85

    stallion85 1/2 ton status

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    This neccesarily doesn't costitute an axle upgrade but if you want to add some strength up front for your steering box, get a steering box brace. With 35's it will definetly be needed. I have a Dana 44 (pretty much a 10 bolt) with all the goodies; chromolys, ctm, arb, crossover steering, diff gaurd, heavy duty tie rod. I got the whole axle with all of the above mentioned for $400. Other wise I wouldn't have been able to afford all those goodies. But if you can they make it pretty nice for 35's.:)
     
  11. firefighter184

    firefighter184 1/2 ton status

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    To run 35's, I'd go with at LEAST 4.10 gearing. Just my opinion.
     
  12. skelly1

    skelly1 1/2 ton status

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    If you re-gear and run 35's, I would go 4:56's. I have those gears in my 1990 K5 and I hardly use the overdrive from the 700R4, meaning a good TH350 or TH400 with those gears/tires would suit me fine. What transfer case you running?
     
  13. B_to_C

    B_to_C 1/2 ton status Author

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    I also have a 1990 K5 with 4.56 gears. I think they're perfect. I would not want to run a TH400 or like the original poster has...a TH350 with 4.56's though. I use overdrive all the time (highway driving) :thinking:
     
  14. 1985K20

    1985K20 1/2 ton status

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    i run 208 tc, and the tranny is a th350...that's why i was not gonna numericly too high with the ratio...i guess 3.73's or 4.10's would be fine, would'nt it???
     
  15. rerun93

    rerun93 Registered Member

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    i have 4.56 gears and a th350 and i like them. freeway kinda sucks cause anyfaster than 60 for me and i can watch my gas gauge drop real fast. but iam never on the highway so there perfect for me
     
  16. folkenheath

    folkenheath Worthless Trash Premium Member GMOTM Winner

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    I have 36s and 4.10 gears without overdrive, I think it works fine on and offroad. I would go with 4.10s again.
     

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