Forum Discussion
mcsurveyor
Jul 07, 2014Explorer
CraigJConrad wrote:
Hi GMW ... What, then, do you suggest? I can have the V8 with 3.09 or the V6 with 3.45. I haven't yet seen a way to get the V8 with 3.45, though I intend to contact the dealer to see if that is even possible. If it *is* possible, then I assume that would drop my MPG by about 10% ... not excited about that possibility, either.
For the TT we have in mind (the heaviest being right at 4300 pounds with full LP and fresh water tanks before loading our stuff), which is better -- V6 3.45 or V8 3.09?
Don't sweat it too much. You probably don't even have the option of choosing the axle ratio. That said, you want the V8. Also, axle ratio is becoming almost meaningless with the new 8 speed transmission. The first gear ratio is so low the 3.09 axle ratio won't matter. If you were buying a vehicle with an older 4-speed auto, I'd say you have an issue. First gear ratio on the 8-speed is something like 4.69 and first on most 4-speeds is around 2.45, so the 8-speed with a 3.09 axle is like having a 4-speed with a 5.91 axle.
You're just fine.
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