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#1 |
Registered User
Join Date: Aug 2007
Location: orlando
Posts: 456
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2 Speed differential
Anyone have a 2 speed rear end in their truck? How do you like it, and what kind of work do you put that truck through? Most likely if anyone has one in theirs it will be in a C-30 or larger. I'd like to find one and install it my C-30, I think it would neat to have one.
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A man's thoughts devise his ways; but it's GOD that directs his steps. |
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#2 |
Registered User
Join Date: Nov 2009
Location: stoddard nh
Posts: 693
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Re: 2 Speed differential
got one in my 74 c60, worked great till we got a flood and locked the rear brakes, thats my project this winter. be prepared they are low geared, i believe the low was 6.17 and high was 5.83 on mine, some go as low 9.97 i believe. so even with the 5.83 with over drive of .70 u get 4.08 which actually aint to bad now that ive done the math lol. this site has some ratios for older ones
http://www.6066gmcguy.org/DriveAxle.htm |
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#3 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: 2 Speed differential
they are for the C/40 and bigger, and of no use on a light duty. I doubt you could even install one in a 10 - 20 truck
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