is this true?

[97yelstang]

is it true that a t-45 with 3.73 's is equal to a 3650 with 4.10 's ???

and if i got 4.10's in my t-45 what would i be taching around 60mph and top speed

 

[mrvax]

I assume you are talking about 5th gear. I've heard they're different but I didn't think it's that much.

 

[BurningRubber]

5th gear with 4.10's in my T-45 is around 21-2200 RPM's.

70 is around 2500 rpm or so, 80 is 3k. It tachs high now but the difference is great when you smash the gas.

The 3650's have a better cruising (5th) gear ratio, so 4.10's in them wont tach as high in 5th as compared to a T-45 car.

 

[Tim2002GT]

There really isn't a big difference. At 70mph I am running about 2400rpm.

60mph is like 2100rpm. Your top speed would probably be 135+, give or take 5-10mph.

Watch this video...
http://www.justagt2.com/movies/gearmovies/gears9.AVI
That's with 4.10's!

And here's a link to the rest of the videos...
http://forums.stangnet.com/showthread.php?t=521948

 

[97yelstang]

with my 3.55's i tach 25000 at 75mph

 

[Scorcher2005]

T-45 w/ 3.73s in 5th gear would have an overall ratio of 2.4991
3650 w/ 4.10s in 5th gear would have an overall ratio of 2.542
That means the 3650 w/ 4.10s would have a greater rpm then the t-45 at the same speed.

 

[Scorcher2005]

with my 3.55's i tach 25000 at 75mph

I hope you meant 2500...

But if you had 3.73s 75mph would be 2626 rpm
4.10s would be 2887 rpm