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08-15-2012, 10:07 PM
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#1 |
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Registered User
Join Date: May 2012
Location: Oklahoma
Posts: 72
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Is it ok if front and rear gear ratios are different?
I have a 1969 K20 4x4 I just changed the rear gears to 3:73 and the fronts have the old 4:56s. Does this mean I can't use the 4 WD with different ratios?
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08-15-2012, 10:15 PM
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#2 |
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Registered User
Join Date: Jun 2012
Posts: 1,089
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Re: Is it ok if front and rear gear ratios are different?
Correct don't use the 4wd untill you get matchng gear ratios.
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08-15-2012, 10:57 PM
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#3 |
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Registered User
Join Date: May 2010
Location: Lewis County, WA
Posts: 1,523
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Re: Is it ok if front and rear gear ratios are different?
You will have some serious problems if your front/rear ratios are different and you engage 4WD.
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08-16-2012, 12:45 AM
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#4 |
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20' Daredevil (Ret)
 
Join Date: May 2003
Location: Jefferson State
Posts: 13,728
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Re: Is it ok if front and rear gear ratios are different?
Those serious problems would include severe binding at the very least, and major parts breakage is a very real possibility. It would be undriveable.
__________________
- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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08-16-2012, 12:55 AM
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#5 |
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Fun Stuff
Join Date: Jan 2010
Location: Sedro Woolley, WA
Posts: 400
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Re: Is it ok if front and rear gear ratios are different?
You could go with different size tires front and rear. You would have to compute the circumference that would work with the different ratios. I don't know how to do this though. Otherwise don't use 4 wheel drive.
__________________
Jay 68 C10(project) 88 Honda Accord(DD) 93 Chevy Astro EXT 2wd |
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08-16-2012, 12:57 AM
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#6 |
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Senior Member
Join Date: Nov 2003
Location: Brookings, SD
Posts: 10,497
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Re: Is it ok if front and rear gear ratios are different?
Breaking stuff may be the least of your worries. You will lose control and possibly wreck, hopefully just the truck and not you or someone else.
Change the front when you can. In the meantime don't use 4wd. You may want to pull the front drive shaft just to be safe.
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Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs. |
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08-17-2012, 02:23 PM
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#7 |
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Registered User
Join Date: May 2012
Location: Oklahoma
Posts: 72
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Re: Is it ok if front and rear gear ratios are different?
What I thought. Front gears are next..
Thanks |
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08-18-2012, 05:17 PM
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#8 |
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Registered User
Join Date: Sep 2010
Location: Lake Tahoe, Nevada
Posts: 755
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Re: Is it ok if front and rear gear ratios are different?
I think if you use 38 inch tires on the 3.73 axle, and 31 inch tires on the 4.56 axle you'd be okay
__________________
I know a little about cars, but if you have a question about electricity or sport quads, I'm your man!!! |
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08-18-2012, 09:31 PM
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#9 |
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Registered User
Join Date: Nov 2011
Location: Edmonton, Alberta
Posts: 43
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Re: Is it ok if front and rear gear ratios are different?
^^^hahaha! maybe 38''s on the front but would that ever look dumb
__________________
80 k35 3+3 DD (big dirty) 85 k1500 DD (scottsdale) and then a few more |
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