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03-09-2011, 12:05 PM
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#1 |
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Registered User
Join Date: Mar 2010
Location: Austin, TX
Posts: 299
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Changing rear diff. gearing...how?
Hey guys,
My 72 GMC has 3.07 gears which are fine except when I want to pull something. I'd like to swap to 3.73 gears. What is involved in doing this? Obviously I don't know anything about differentials. Don't need posi but it wouldn't hurt I guess. Is this an entire rear swap or just rebuilding the gears/axles? Thanks for any help
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1972 GMC Sierra LWB (Aquafresh) 1962 Cadillac Convertible 1962 Cadillac Sedan project |
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03-09-2011, 12:39 PM
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#2 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Changing rear diff. gearing...how?
the best complete detailed instructions with detailed step by step procedure as well as list of specialized tools required // facory service manual available from most board vendors at a very reasonable rate
__________________
71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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03-09-2011, 01:31 PM
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#3 |
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Registered User
Join Date: Jan 2011
Location: Redmond, OR
Posts: 754
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Re: Changing rear diff. gearing...how?
Easiest way (and probably cheapest) is to find someone parting out a truck with the gear set you want. Just buy the entire axle assembly and swap it in. Watch for coil vs. leaf springs.
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68 Chev C20- son has it now 83 K20 - bought from son 70 C20 - in progress |
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