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Does any one know forsure what the gear ratio is in a 2001 Monte Carlo SS Non supercharged l36 4t65e non hd Trans. Everybody argues between 3.29 and 3.05
 

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3.29 is what your car has. 3.05 is what the 3100 cars typically got.
You can look at the RPO code on your trunk tag for FR9 (3.29), 1LDB on trans tag... F83 (3.05), 1LBB on tag... There's a handful of other varieties, but those are the two I see for 3800 Chevy's in 2001.
 
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