K5 Blazer 1969-1994
While this model ended its run, it is not uncommon to see them on the road or off, years after production end.
Platform: Truck, GMT 400

gears

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Old March 19th, 2009, 8:10 PM
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i have a 1990 k5 blazer gasser with a 6" lift with 35s and it needs new gears what size of gears should i get it has 3.55 right now
Old March 22nd, 2009, 8:58 AM
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That would depend on how and where you drive it, I put 4:56 gears in my K5 Tahoe with 35's on it but I only use it off road for the most part. If I ran on the street alot I would have used 4:10
Old March 22nd, 2009, 8:10 PM
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i would go with 4:10 if not doing a ton of highway driving other wise go with 3:73
Old April 15th, 2009, 6:04 PM
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456 for more low end power, 410 for higher speeds. The assumption here is you're not doing a lot of highway driving in this rig, anyway.

Last edited by therewolf; April 15th, 2009 at 6:06 PM.
Old May 1st, 2009, 6:24 PM
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What kind of transmission are you running?
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