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-   -   New Gear Ratio Comparison (https://themustangsource.com/forums/f726/new-gear-ratio-comparison-479378/)

sknapp302 12/29/09 09:41 AM

New Gear Ratio Comparison
 
One of the really exciting improvements that is coming with the 2011 Mustang is the use of steeper first gears in both the manual and automatic transmissions. The manual steps up from a 3.38 to 3.66. The auto jumps from 3.22 to 4.17!

So for comparison, a manual equipped 2011 Mustang with standard rear gears (3.31:1) has approximately the same gear multiplication at the rear wheels as a 2010 Mustang with 3.55s. An automatic equipped 2011 Mustang with standard rear gears (3.15:1) and its super steep first gear has approximately the same gear multiplication at the rear wheels as a 2010 Mustang with 4.11s. I think we will be seeing some incredible 60 foot times from these new mustangs at the track with some sticky tires.:metal:

http://i643.photobucket.com/albums/u...GearRatios.jpg

rayainsw 12/29/09 10:59 AM

RPM @ ?
 

Originally Posted by sknapp302 (Post 5787596)
One of the really exciting improvements that is coming with the 2011 Mustang is the use of steeper first gears in both the manual and automatic transmissions. The manual steps up from a 3.38 to 3.66. The auto jumps from 3.22 to 4.17!

So for comparison, a manual equipped 2011 Mustang with standard rear gears (3.31:1) has approximately the same gear multiplication at the rear wheels as a 2010 Mustang with 3.55s. An automatic equipped 2011 Mustang with standard rear gears (3.15:1) and its super steep first gear has approximately the same gear multiplication at the rear wheels as a 2010 Mustang with 4.11s. I think we will be seeing some incredible 60 foot times from these new mustangs at the track with some sticky tires.:metal:

http://i643.photobucket.com/albums/u...GearRatios.jpg

Interesting calculations.
Any insight you can provide into RPM at cruising speeds
like 60 \ 70 \ 80 MPG?
I enjoy acceleration,
but also prefer the engine to be loafing
[ relatively ] at steady highway speeds...
Something the wide ratio spread ought to allow?
Thanks,
- Ray
YMMV

laserred38 12/29/09 11:06 AM

Yeah I saw that steep 1st gear on the auto. With some sticky tires and a gear swap (3.73s or 4.10s) on an auto equipped Deluxe, I guarantee you it will be a high 11 second car.

sknapp302 12/29/09 11:36 AM

Here is the chart with RPMs at cruising speeds:

http://i643.photobucket.com/albums/u...g?t=1262111646

Adam 12/29/09 11:51 AM

I'm tempted to get a 2011 with an auto tranny and 3.73 rear end. Those will be some consistently fast 0-60 times.

rayainsw 12/29/09 11:57 AM


Originally Posted by sknapp302 (Post 5787657)
Here is the chart with RPMs at cruising speeds:

http://i643.photobucket.com/albums/u...g?t=1262111646

Interesting...
Thanks!
- Ray

Bigjohns97 12/29/09 12:02 PM

I wish the 80mph crusing speed was below 2k RPM..

rayainsw 12/29/09 12:30 PM


Originally Posted by sknapp302 (Post 5787657)
Here is the chart with RPMs at cruising speeds:

http://i643.photobucket.com/albums/u...g?t=1262111646

Almost exactly the same RPM that I now see in my G8 GT...


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