grey goose

how much does it affect your MPG?

dvs_03gt

nice reply i liked hearing that one. i have some 373s sitting here, i dont want to install them though because i might jump up to the 410s. now listen, i totally understand the fifth gear situtation on my 03 gt, it is boggy and looonnngg. Will the 373s make 5th stronger? or would i have to go 410s for that feel. I drive alot in vegas, stop light to stop light, as well i enjoy first gear. Also the streets out here seem to give off little traction, even with my nitto d/r's.. my next issue is the traction. This is why i still have not stepped it up to 410s.. will i be okay? i mean i am slappin a super on VERY SOON, so there is another added element.

dvs_03gt

and im not trying to jack the topic, just adding in maybe you can decide off my questions

2000GT4.6

I have 3.73s and am pretty pleased with em... I would not want any more gear at this time with the way the car acts.

On a n/a boltons car though, 4.10s FTW!

grey goose

2000GT4.6 - so you are saying since i will be putting a supercharger on , i should stick with 3:73s? Whats the difference if you have 3:73 to 4:10 on a supercharged car?

dvs_03gt

is your 5th alot better than stock with the 373s?

grey goose

Heres an off topic question......would i need a fuel pressure gauge that reads over 60 PSI?

rbstang

What the hell is going on?
Fuel Pressure Gauge for gears?
5th gear alot better with 3.73s then stock?... ANYTHING IS BETTER THEN STOCK !

im so confused [sm=dontgetit.gif]

grey goose

I have been asking this question for days and no response so i figured since there was people on here i could get an answer. My apologies......i am confused about what gear i should get since i will be supercharged as well?

CoolAid

Heres some numbers using my tire as an example (255/45/17) 25' tall, at 75 MPH to give you a hiway estimate of what you'll be at:

4.10 gears w/ Manual (3650 5-speed):
5th gear: (.68:1): 2,810 RPM

3.90 gears w/ Manual (3650 5-speed):
5th gear: (.68:1): 2,673 RPM

3.73 gears w/ Manual (3650 5-speed):
5th gear: (.68:1): 2,557 RPM




[hr]



4.10 gears w/ Automatic (4R70W 4-speed):
4th gear: (.70:1): 2,893 RPM

3.90 gears w/ Automatic (4R70W 4-speed):
4th gear: (.70:1): 2,752 RPM

3.73 gears w/ Automatic (4R70W 4-speed):
4th gear: (.70:1): 2,632 RPM


For me, being that I'm keeping my car non-F/I, its 4.10 FTW![sm=gears.gif]


EDIT: Manual w/ 4.30 gears: 2,947 RPM ----- Auto: w/ 4.30 gears: 3,034 RPM