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Old 04-12-2005, 09:18 PM   #1
browndawg71
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gear ?s

what is the highest gear ratio(numercially lowest) availible in a 12 bolt truck rearend? i would have posted this in eng and drivetrain but i thought it would get better exposure here.
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Old 04-12-2005, 09:27 PM   #2
Longhorn Man
its all about the +6 inches
 
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Stock... 3.07 in a 1/2 ton only.
Standard with a small block and automatic.
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Old 04-12-2005, 09:36 PM   #3
tommy knotts
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2.73's are out there.1981 trucks and blazers had them.had a set in a 79 or 80 blazer.yea they was 12 bolt
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Old 04-12-2005, 09:48 PM   #4
Longhorn Man
its all about the +6 inches
 
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well, I guess he did ask for in a truck 12 bolt huh?
67 - 72, the highest you could get was a 3.07 in a 1/2 ton truck.
Good catch tommy.
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Old 04-12-2005, 09:59 PM   #5
ac102nv
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My dad's '72 1/2 ton 2wd lwb 350/350 had 2.73's until he switched them. He's had the truck since the early 80's so I'm sure they were orig.
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Old 04-12-2005, 10:22 PM   #6
Longhorn Man
its all about the +6 inches
 
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There were no 2.73 gears as a regular production option in 67 - 72. Either that was actually a 3.73...or that is a COPO truck...or, they were chainged out before he got it.
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