3.42 w/ FI 6.0 and 4L80e ???
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80e ratios: 2.48, 1.48, 1.00, 0.75
with the 80e it seems that there is a 200rpm drop at 74mph in 4th gear with each gear ratio drop. makes for easy real world calculations.
Last edited by EVILGMC; 03-06-2009 at 11:19 AM.
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