auto trans top rear ratio, 4 spd vs 6 spd
11-04-2009, 06:29 PM
#1
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auto trans top rear ratio, 4 spd vs 6 spd
I just traded my 2000 Viper towards an 09 2500 Megacab 4X4 6.7 with 6 speed auto and 4.10 rear end. My question is, is top gear on the new 6 speed auto a higher ratio than the top gear on the 4 speed auto on my 06 Megacab 5.9. My 06 had the 3.73 rear end and I'm wondering how the rpm's will compare at a given speed like maybe 65mph.
I'll be putting the 06 up for sale as soon as I pick the new one up at Pearsons in VA.
Thanx, Mike.
I'll be putting the 06 up for sale as soon as I pick the new one up at Pearsons in VA.
Thanx, Mike.
11-05-2009, 10:56 AM
#3
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The info, assuming tire size is 235 x 80 x 17, at 65 mph.
48RE 4th gear ratio 0.690 @ 1800 rpm (3.73)
48RE 4th gear ratio 0.690 @ 1950 rpm (4.10)
68RE 6th gear ratio 0.625 @ 1750 rpm (4.10)
Dave
48RE 4th gear ratio 0.690 @ 1800 rpm (3.73)
48RE 4th gear ratio 0.690 @ 1950 rpm (4.10)
68RE 6th gear ratio 0.625 @ 1750 rpm (4.10)
Dave
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