New Gears for Automatic
Thread Starter
Safety Car
Joined: Nov 2003
Posts: 4,550
Likes: 3
From: Houston Texas
New Gears for Automatic have 3.15- Cost? Where? Cleveland Ohio
Thinking of going to a different gear, I have an automatic 2000 convertible. Suggestions? :cheers:
[Modified by krl, 7:00 PM 12/30/2003]
[Modified by krl, 7:00 PM 12/30/2003]
Thread Starter
Safety Car
Joined: Nov 2003
Posts: 4,550
Likes: 3
From: Houston Texas
Re: New Gears for Automatic (jfpilla)
Would be interested, however was thinking higher gear, by the way lived in WS in mid 80's and had a convertible 74 and convertible 75, that was prekids.
Burning Brakes
Joined: Aug 2002
Posts: 1,090
Likes: 8
From: Indianapolis Indiana
Re: New Gears for Automatic (krl)
I'm thinking of doing gears in my wife's 2000 coupe. Kind of thinking I'd be unsatisfied unless I go all the way to 4.10's. I could put 4.10's in my '01 vert and put that diff in my wife's. Still thinking on it. :confused: :confused: :confused: decisions, decisions....
Le Mans Master
Joined: Jan 2003
Posts: 6,298
Likes: 0
From: Tyler TX
Re: New Gears for Automatic (BayouVette)
I really think the 3.42 is the best gear set and should come standard.. You will be amazed at what it does for your car especially with a stall. :eek:
Melting Slicks
Joined: Jun 2001
Posts: 2,743
Likes: 3
From: Davie Florida
Re: New Gears for Automatic (LittleBoyBlu99)
I really think the 3.42 is the best gear set and should come standard.. You will be amazed at what it does for your car especially with a stall. :eek: :iagree: 3.73's is about high as you want to go in a A4 unless you are doing H/C and plan to race it often. I think the 3.42's are the best if you plan to keep it close to stock. :cheers: :thumbs:
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Instructor
Joined: Jun 2001
Posts: 102
Likes: 0
From: Stafford Virginia
Re: New Gears for Automatic (krl)
Go with the 3.42's! Forget about the TC and get a set of long tube headers and some new mufflers instead. The 3.42's will allow you to cruise at 2200 rpm @75 mph while still getting 24mpg. The difference in acceleration from the 2.73's is AMAZING, you will love them. :D
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 180
From: S.W. Ohio. . . . . . NRA Life Member
Re: New Gears for Automatic (krl)
Kirby; keep in mind that the 3.15 to 3.42 swap is the least amount of change you can do,
2.73 to 3.15 = 15% change
2.73 to 3.42 = 25% change
3.15 to 3.42 = 8.5% change
3.15 to 3.73 = 18.5% change
and for 6 speed owners:
3.42 to 3.73 = 9.2% change
3.42 to 3.90 = 14% change
3.42 to 4.10 = 20%
I mention this because some say they can't even feel a difference going from the 2.73 to 3.15 (which is almost double the percentage increase of the 3.15 to 3.42).
I could definately "feel" the 3.15 to 3.42 upgrade on my A4. It wasn't a day/night improvement, but was what I was looking for at that time.
Since you probably won't change your rear axle ratio more than once; take time to determine what is best for your useage of the car. If you never visit the track - and always want to use run-flat tires - the 3.42 may be the best all-around ratio for the A4 under these specifics.
Once I see the C6 in person on Jan 8 and (in in July 2004) when my '02s warranty expires... I may (if I keep the car) look into 3.73 - versus - other engine bolt-on mods; and see which one I would like to have.
[Modified by Mike Mercury, 10:51 AM 1/1/2004]
2.73 to 3.15 = 15% change
2.73 to 3.42 = 25% change
3.15 to 3.42 = 8.5% change
3.15 to 3.73 = 18.5% change
and for 6 speed owners:
3.42 to 3.73 = 9.2% change
3.42 to 3.90 = 14% change
3.42 to 4.10 = 20%
I mention this because some say they can't even feel a difference going from the 2.73 to 3.15 (which is almost double the percentage increase of the 3.15 to 3.42).
I could definately "feel" the 3.15 to 3.42 upgrade on my A4. It wasn't a day/night improvement, but was what I was looking for at that time.
Since you probably won't change your rear axle ratio more than once; take time to determine what is best for your useage of the car. If you never visit the track - and always want to use run-flat tires - the 3.42 may be the best all-around ratio for the A4 under these specifics.
Once I see the C6 in person on Jan 8 and (in in July 2004) when my '02s warranty expires... I may (if I keep the car) look into 3.73 - versus - other engine bolt-on mods; and see which one I would like to have.
[Modified by Mike Mercury, 10:51 AM 1/1/2004]
Le Mans Master
Joined: Jul 2002
Posts: 7,076
Likes: 26
From: Nevada and Florida
Re: New Gears for Automatic have 3.15- Cost? Where? Cleveland Ohio (krl)
I have studied this and driven a few cars. The 2:73 and 3:15 gears are not enough IMO. Mininmum is 3:42 and is the best if you are doing street and freeway driving. Street and drags, 3:73+. TC is fine if you have the right tires otherwise you will smoke the stock EMTs. For mixed driving I would stay with stock TC.
