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Old 03-29-2011, 03:37 PM   #1
kd71jimmy
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Cool Rear gear options for '71 2wd jimmy/blazer

Does anyone know what gear ratios came with '71 2wd blazer/jimmy?? Mine came with a 350/automatic tranny...does not have positive traction...I'm thinking probably 308 or 342...not real sure??? I am ordering a 700R4 conversion and they need to know for speedo gearing I guess...Thanks...KD
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Old 03-29-2011, 03:48 PM   #2
Torrey72
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Re: Rear gear options for '71 2wd jimmy/blazer

Pop the dif cover and count the teeth. I'm sure it's time to change the lube anyway
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Old 03-29-2011, 04:55 PM   #3
joemacho
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Re: Rear gear options for '71 2wd jimmy/blazer

my rear came with 373s and my jimmy 2wd came with 373s.. i thinks this is a common in blazers.
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Old 03-29-2011, 07:12 PM   #4
1972CST
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Re: Rear gear options for '71 2wd jimmy/blazer

Mine is 350/auto 4x4 and has those @#$%#$@ 3.08 gears. I am looking for at least 3.73's to swap out.
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Old 03-30-2011, 05:46 AM   #5
Blazer1970
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Re: Rear gear options for '71 2wd jimmy/blazer

With the 350 engine, 3.07/3.08 was the stock ratio.
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Old 03-30-2011, 11:01 AM   #6
kd71jimmy
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Re: Rear gear options for '71 2wd jimmy/blazer

thanks for the help fellas...KD
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Old 03-31-2011, 10:55 PM   #7
kd71jimmy
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Re: Rear gear options for '71 2wd jimmy/blazer

pulled the cover today...14 teeth and 43 teeth...3.0714 ratio...new gear oil and gasket now...thanks all...kd
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