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Gear ratio

Discussion in 'The Garage' started by 1978Blazerk5, Jan 29, 2007.

  1. 1978Blazerk5

    1978Blazerk5 1/2 ton status

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    hey I have a 1978 blazer on 33's and it has a 12 bolt with 4.56 gears and a factory locker and a dana 44 with 4.56 open diff. my question is do I have to much gear ratio for the size tire im running.Just to let you guys know this is my DD.
    Thanks
     
  2. barneybasher1010

    barneybasher1010 1/2 ton status

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  3. CDA 455

    CDA 455 3/4 ton status

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  4. 1978Blazerk5

    1978Blazerk5 1/2 ton status

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    thanks for the website um accordin to that i should have 4.11 or 4.27 gears oh well 4.56 are fine
     
  5. u2slow

    u2slow 1/2 ton status

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    Depends what your drive is like. 4.10 & 33's was too much for my DD at hghway speeds. :shrug:
     
  6. 1978Blazerk5

    1978Blazerk5 1/2 ton status

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    my blazer at 60mph is just under 3000rpm's
     
  7. bdozeraz

    bdozeraz 1/2 ton status

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    Just put some 35"s on and it will be perfect.
     
  8. southernspeed

    southernspeed 1/2 ton status GMOTM Winner

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    That must howel on the freeway! As said, 35's would be better. It will still be high reving but better.
    And 3000rpm at 60mph? Hope you've got some good ear plugs!!
     
  9. 1978Blazerk5

    1978Blazerk5 1/2 ton status

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    i accualy drove the thing from california to wisconsin 2100 miles
     
  10. BigEasy

    BigEasy 1/2 ton status

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    You could always swap in a built 700R4 and have the best of both worlds (low gearing AND low RPM highway cruising). Otherwise I agree with replacing your 33"s with 35"s when it's time for new rubber.
     

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