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  • 2005 - 2014 S-197 Mustang -General/Talk-
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3.73 Rear Axle Package on an Auto Transmission

  • Thread starter Thread starter Will_729
  • Start date Start date Sep 8, 2009

Will_729

New Member
Sep 8, 2009
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Sep 8, 2009
#1
  • Sep 8, 2009
  • #1
I soon will be a proud first time Mustang GT owner. I am gathering up a huge down payment for my mustang gt that I will be ordering by the end of the year.

But first, I have a few questions; I am buying an automatic transmission for a few reasons. One, being that I live in Los Angeles, California and the traffic through the 101 and 405 is always heavy. If I was to buy a manual transmission would I be spending more gas changing gears than on a auto transmission during traffic?

I've being reading about the rear axle ratio and I keep reading that a 3.73 Rear Axle Package is faster than the 3.55. How is the 3.73 on gas? And finally, is the 3.73 Rear Axle Package option available on a auto transmission? I am asking because on the Ford Site it is not an option on the auto transmission option.

Thank you.

Excited for my mustang. Oh Yeah...I test drove one today.
 
S

Sa-When

New Member
Mar 4, 2007
111
0
0
Sep 8, 2009
#2
  • Sep 8, 2009
  • #2
on the autos the 3:31 gear is the only option! as far as gas mileage between the auto & manual in traffic I would think some factors would come into play there,stop and go would depend on how much you ride the clutch, I would think and auto would get better mileage.we don't have that problem out here in the middle of no where[lol].. guess it would all depend on how much you liked shifting.I would get the auto and have a set of 4:10sput in the back..my .02
 
B

boston2k4

New Member
Jun 11, 2009
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Sep 8, 2009
#3
  • Sep 8, 2009
  • #3
4.10s in that auto is the best idea since sliced bread good bang for the buck and you don't have to worry about driving in bumper to bumper traffic with a stick.
 

Fast05

New Member
Sep 16, 2005
409
1
0
Corpus Christi, TX
Sep 8, 2009
#4
  • Sep 8, 2009
  • #4
Go with the auto, put 4.10s in it. You won't regret it. The 4.10s will have to be installed after you purchase it and you'll have to get a tuner to fix the axle ratio, but well worth it.
 

Five Oh Brian

Member
Jun 13, 2007
552
1
16
Pacific Northwest
Sep 8, 2009
#5
  • Sep 8, 2009
  • #5
Fast05 said:
Go with the auto, put 4.10s in it. You won't regret it. The 4.10s will have to be installed after you purchase it and you'll have to get a tuner to fix the axle ratio, but well worth it.
Click to expand...

+1, that's what I did. My 07 GT automatic was a mere 2 weeks old when 4.10's went in. Absolutely magical....
 

scupking

Active Member
Sep 18, 2005
1,186
1
36
Enfield, CT
Sep 8, 2009
#6
  • Sep 8, 2009
  • #6
I just went from 3.73s to 4.10s in my 01 GT auto and wish I went with the 4.10s from the start. On the highway I run at 2,800RPM at 75mph but she pulls so good in all the gears.
 
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