I'm looking at gears for my next mod and trying to decide whether to get 3.90's or 4.10's. My car is a dd but the only thing i'd like to see is what kind of rpm's 4.10's with the tr3650 turn on the freeway. I have to drive about 20 mins on the interstate 3 days out of the week for school. If someone could just tell me what rpm's you run with 4.10 at say 60,70, and 80 mph that would be great. Thanks in advance.
Mid 01-04 gts with 4.10 come in please
- Thread starter IH8RICE2
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Mossberg
Active Member
bump for ya.
I don't know as I haven't installed mine yet, but I believe the t3650 has a taller 5th gear and will tach a little lower than a T45. There is a calculator around here somewhere. It's bookmarked on my home PC and I'm at work right now though.
I don't know as I haven't installed mine yet, but I believe the t3650 has a taller 5th gear and will tach a little lower than a T45. There is a calculator around here somewhere. It's bookmarked on my home PC and I'm at work right now though.
AmBo
Active Member
I don't know how you can stand long trips with your car SCREAMING at you the whole time. 3.73s is enough for me. 
dustang50
Member
BigChiefSmokem
Founding Member
bah, go 4.30's.... You'll still get good gas mileage... if you can keep your foot out of the gas...which has proven hard for me... But since your car is a DD, go with 4.10s and no less... maybe 3.90's or 3.73 if a supercharger is in your definite future...
A supercharger is in mine, just not soon.... i wonder how a vortech at 400 hp is going to go with a 4.30 gear. haha..
A supercharger is in mine, just not soon.... i wonder how a vortech at 400 hp is going to go with a 4.30 gear. haha..
elite130
Member
I used this gear chart to make my gear decision (I'm going with 3.73's). The Bullitt's have the TR-3650 tranny.
http://www.bullittarchive.com/3013.htm
http://www.bullittarchive.com/3013.htm
2003 amd 2004 GT's and Mach 1's have a steeper overdrive in the 3650 than the 01-02's.
01-02's i beleive have a 0.67 or 0.68 5th gear while the 03+ 3650 has a 0.62 5th gear
So you 01-02 guys (and older) would be spinning slightly higher RPM's then the 03+ guys
01-02's i beleive have a 0.67 or 0.68 5th gear while the 03+ 3650 has a 0.62 5th gear
So you 01-02 guys (and older) would be spinning slightly higher RPM's then the 03+ guys
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