06 g35 coupe auto, good or bad idea to go with the 3.90 final drive gear
#1
#3
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iTrader: (18)
^This is from the FSM for the 2006 coupe:
Its simple, taller gearing will allow the car to climb through the RPM range in a shorter distance. I didn't have any major issues with a 3.7, not sure about 3.9 though. Your speedometer will also be inaccurate.
Its simple, taller gearing will allow the car to climb through the RPM range in a shorter distance. I didn't have any major issues with a 3.7, not sure about 3.9 though. Your speedometer will also be inaccurate.
Last edited by herrschaft; 06-23-2013 at 01:32 PM.
#6
traction issues? traction issues in corning or on take offs? when you where running the 3.7 ratio did you ever think bout get a Differential?
#12
#15
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Not to answer for him but I know for me it was a fear of "getting used to it" too quickly because of the (relatively) slow onset of boost with the sc. SC is the safer option on stock internals- especially for the AT where you're looking at protecting a tranny as well
There is also a rather detailed thread on going to the 3.7 and some of the hurdles. I know a lot of NA / boost guys swap 3.3 for 3.5s so it's very available for a very reasonable price. 3.7 may need a bit more money. I can't remember which section it is but if I find it I'll link to it if you haven't found it already.
Might be this one...
I'd also be taking a very hard look at an aluminum driveshaft- or CFif you have money to burn. Transgo upgrade is a must... I would hit those two items with a 3.5 before I went to a 3.7 but that's just me.
There is also a rather detailed thread on going to the 3.7 and some of the hurdles. I know a lot of NA / boost guys swap 3.3 for 3.5s so it's very available for a very reasonable price. 3.7 may need a bit more money. I can't remember which section it is but if I find it I'll link to it if you haven't found it already.
Might be this one...
I'd also be taking a very hard look at an aluminum driveshaft- or CFif you have money to burn. Transgo upgrade is a must... I would hit those two items with a 3.5 before I went to a 3.7 but that's just me.