Difficulty in changing rear-end gears?

P

praugue

New Member

Sep 18, 2007

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Sep 22, 2007

#1

• Sep 22, 2007

• #1

I'd ultimately like to have a 2-speed rear-end, but ...

How difficult, or expensive to have it done, is this job? I like the stock 3.27:1 in the 92GT, but it sure would be nice to "drop in" a 2.73:1 for longer trips and general cruising.

In fact, I'd like to have 3.73:1 for snappy response around town and the 2.73 for cruising.

Is it difficult to DIY or expensive to have it done?

Thanks.

Here's the intended victim.

1992 GT

 

TRWXXA

Member

Jan 18, 2003

190

1

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RIGHT BEHIND YOU!!!... Made you look.

Sep 22, 2007

#2

• Sep 22, 2007

• #2

It can cost you anywhere from $250 to $400 to have the gears changed. And that's if you provide the parts.

Rear gears do not just "drop in" to an 8.8 rear end. It's a pretty detailed process, and one not easily accomplished by a novice.

The 3.27s are a good compromise gear. You might only gain 1 or 2 mpg on the highway by going to 2.73s. If you want something more "snappy", you could go to 3.55s. You would only lose about 1 highway mpg from what you are getting now, and some folks actually see better city mpg with the higher gear ratios.

 

daviszx3

Member

Jun 3, 2007

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maryland

Sep 22, 2007

#3

• Sep 22, 2007

• #3

i just swapped my gears out to 373's i used the old shims and bearings and no noise in the rear at all but still not the job for a novice

 

cobradvm

New Member

Sep 2, 2003

245

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Woodinville, WA

Sep 22, 2007

#4

• Sep 22, 2007

• #4

Didn't know they made 3.27s as a stock gear - are you sure you don't mean 3.08s? 3.55s would be a good choice.

 

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lang williams

New Member

Jun 11, 2003

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cleveland, oh

Sep 22, 2007

#5

• Sep 22, 2007

• #5

3.27's were stock for 99 up an 93 cobra i believe

 

montegoman351

Member

Jan 12, 2007

169

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Sep 22, 2007

#6

• Sep 22, 2007

• #6

Have Currie make you a 9 inch rear end then you'll have drop in gears

 

P

praugue

New Member

Sep 18, 2007

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Sep 22, 2007

#7

• Sep 22, 2007

• #7

I'm pretty certain that the door panel code was for 3.27:1. I'll check it again, but it was easy to remember since my LX has 2.73:1.

 

PUNISHER RACING

Active Member

Aug 27, 2007

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FORD CITY, PA.

Sep 23, 2007

#8

• Sep 23, 2007

• #8

I will make you a good deal on a set of 3.31's outta my 07 GT

 

P

praugue

New Member

Sep 18, 2007

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Sep 24, 2007

#9

• Sep 24, 2007

• #9

Good info. Thanks.

I wouldn't mind trying the 3.31's, but it looks like I'll just have to leave the LX (2.73) for cruising and the GT for around town.

A 2.73/3.73 two-speed rear-end would be the killer product I'd want.

 

F

Fox8950

Member

Jun 29, 2007

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Sep 24, 2007

#10

• Sep 24, 2007

• #10

Yeah that would be pretty nice, who makes these 2 speed rear ends?

 

7-UP BILL

Founding Member

Jan 4, 2001

885

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My other car is a Firetruck

Sep 24, 2007

#11

• Sep 24, 2007

• #11

3.27's were the optional gear for AOD's. Door code "E".

 

L

lang williams

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Jun 11, 2003

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cleveland, oh

Sep 24, 2007

#12

• Sep 24, 2007

• #12

i've seen one two speed rear end on horsepower tv, it was in an early 60's pontiac "heavy duty" drag car, that with the power glide made it a 4 speed. you could get a two speed xfer case btwn the trans an drive shaft, put you'd have to put some 410's in the back an use the xfer case on the highway. that dude on trucks put one in "copperhead".

 

P

praugue

New Member

Sep 18, 2007

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Sep 25, 2007

#13

• Sep 25, 2007

• #13

7-UP BILL said:

3.27's were the optional gear for AOD's. Door code "E".

Click to expand...

There we go. Thanks. It's an AOD GT (odd, yes, but it has very few miles on it).