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02-23-2009, 12:15 AM
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#1 |
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Registered User
Join Date: Jan 2008
Location: west richland WA
Posts: 61
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gear ratio difference
what is the largest difference in gear ratios from front to rear that can be used without blowing u joints thanks
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67' chevy k10 350 sm420 |
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02-23-2009, 12:48 AM
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#2 |
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Registered User
 
Join Date: Oct 2006
Location: Evans, Colorado
Posts: 530
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Re: gear ratio difference
couple of hundredths ( 4.10- 4.11) unless you adjust tire size one each axle like a tractor....
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02-23-2009, 06:33 AM
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#3 |
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Special Order
  
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,862
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Re: gear ratio difference
Yeah,I`ve never seen more than 1/100th off from factory:4.09 front/4.10 rear is common.and,it`s more than u-joints you need to worry about.Anything can break in the middle.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ Last edited by special-K; 02-23-2009 at 06:34 AM. |
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02-23-2009, 02:20 PM
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#4 |
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Senior Member
Join Date: Jul 2004
Location: Clarks Hill, Indiana
Posts: 733
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Re: gear ratio difference
A friend of mines Dakota has 4.10 & 4.11's I believe, and there is a hugh warning not to drive on hard surfaces (paved) in 4WD. If you've got them matched, it won't be an issue.
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1969 K10 - V8, 465, 205, 12 bolt, D44 2002-current 1969 K20 - V8, 465, 221, Eaton, D44 2012-current Nothin' but drums on all 4 corners! past horses in the stable 72 C10-short step (97-02), 68 C10-long fleet (06-12) |
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02-23-2009, 08:44 PM
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#5 | |
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just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: gear ratio difference
I wouldn't run on hard pavement locked in 4 wheel drive, no matter how perfect the gear match might be. It is asking for trouble.
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