BLOWN05GT

I have a 2005 Mustang GT with a non-intercooled Vortech Supercharger KIT on an otherwise stock 4.6L V8 engine.

My Transmission = Automatic = Factory Gear Ratio of 3:31
(Manual Transmission '05 GTs are 3:55)

I am trying to increase acceleration without having to add any additional horsepower so as to better my ET times
in 1/8 mile (and 1/4 mile as well, although I live too far from a 1/4 mile track to enjoy improved 1/4 mile ET times).

I don't have any dyno numbers to show hp at the rear wheels, though Vortech advertises I have 420hp at the flywheel.

Though I was a little disappointed in them, below are the ET times from a pass I made at a local 1/8 mile dragstrip:

2.1635 = 60 FT
5.9558 = 330 FT
8.9422 = 1/8 Mile = 84.07 Mph

I am looking for suggestions on what gears I should put into my GT. An experienced racer at our local drag made
the suggestion for 3:73, while the mechanic that installed my vortech supercharger suggested 4:10. From the little
research I have done online it appears my options are: 3:55, 3:73, 3:90, 4:10, 4:30. The suggestion of 3:73 was
made to me because it would improve ET times without compromising Highway driving too much. I think the
suggestion of 4:10 was made with only improved ET times in mind. Please make suggestions to me and support
them with your reason so as to aid me in making an informed decision.

From the other threads on this Forum the question seems to be if one should go with 3:73 or 4:10 ...
this is really making me think about the 3:90 (kind of like meeting everyone 1/2 way

03GTType

Sounds like all the info you have is correct.. spupercharged I would suggest 3.73's even though I don't think it will be a huge difference. If your at the track constantly then 3.90's.