V6 S197 General DiscussionThis section is for technical discussions pertaining specifically to the V6 variation of the 2005 and newer Ford Mustang.
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Just got my 3.73's and T-lock haven't spun the wheels yet but the gears are nice car pulls good and gets up to rpm's quick from almost all gears! Go 3.73 I have heard alot of guys say that they regret the 4.10's cause they run too highin RPM's at freeway speeds. Mine are fine in 5th.
3.73 gears will fit in the stock rear housing right? or is it just better to just install a T-lock and not upgrade the gears?
As long as they are for a 7.5" rear-end. The 3.73's for a 8.8" GT rear will not fit a 4.0L rear housing.
You can add a t-lok and not change your gears, but if you think you may want to change the gears some time down the road, then you should do it all at once and save on labor charges by not having the rear opened up twice.
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