Join Date: Sep 2012
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It depends on what kind of towing and driving you want to do... The NV5600 is the workhorse trans that has tighter ratios (ending with the same final drive) than the NV4500. The gap between 3rd and 4th in my 4500 is considerable, so towing lots of weight uphill takes forethought on what gear you wanna be in/what point you need to shift, but nothing crazy. I've heard some guys with 5600s saying the 6 speed feels like a LOT of shifting around town unloaded, and parts are harder to find. I really don't think you could go wrong either way, so try and drive both and buy what you like.
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2000 Forest Green 2500 4x4 NV4500 3.55 QCLB SLT Sport 14x,xxx
MBRP 5" muffled, CAI, Isspro EV2s, Smarty w/boost elbow, FASS Titanium 95gph, DDP +75hp sticks, 315/70/r17E Revo2s on chrome H2s