Anyone know gear ratios for an A4?
#1
Safety Car
Thread Starter
Anyone know gear ratios for an A4?
I'me debating on a rear end gear change and need the A4 gear ratios for comparison purposes at various rpms for different rear end choices. If anyone can tell me where to find the transmission info, I would greatly appreciate it. I used to have it and cannot find it. No success with "search" either.
Ed
Ed
#2
Le Mans Master
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St. Jude Donor '13-'14-'15
A4's came with either a 2.73 or a 3.15(sometimes called the sport gear) rear diffs--You can find the ratio stamped on the diff case--This chart will show you the MPH with differnent RPM's and tire diameters--Just punch in the numbers and hit calculate-- Enter the trans ratio as
.696 & the tranfer case as 1.0 & the tire diameter if stock as 26.6
http://4lo.com/calc/gearratio.htm
.696 & the tranfer case as 1.0 & the tire diameter if stock as 26.6
http://4lo.com/calc/gearratio.htm
#3
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St. Jude Donor '12-'13-'14-'15-'16-'17-'18-'19-'20-'21
I'me debating on a rear end gear change and need the A4 gear ratios for comparison purposes at various rpms for different rear end choices. If anyone can tell me where to find the transmission info, I would greatly appreciate it. I used to have it and cannot find it. No success with "search" either.
Ed
Ed
#4
Team Owner
Name
Hydra-matic 4L60-E
RPO Codes
M30
Production Location
Toledo, Ohio
Vehicle Platform (Engine/Transmission) Usage
Y
Transmission Drive
Longitudinally-Mounted Rear Wheel Drive
1st Gear Ratio
3.059:1
2nd Gear Ratio
1.625:1
3rd Gear Ratio
1.000:1
4th Gear Ratio
0.696:1
Reverse
2.294:1
Torque Converter Size (Diameter of Torque Converter Turbine)
298 mm
Pressure Taps
Line Pressure
Transmission Fluid Type
DEXRON® III
Transmission Fluid Capacity (Approximate)
298 mm Converter
Dry: 11.25 l (11.9 qt)
Transmission Type: 4
Four Forward Gears
Transmission Type: L
Longitudinal Mount
Transmission Type: 60
Product Series
Transmission Type: E
Electronic Controls
Position Quadrant
P, R, N, Overdrive, D, 2, 1
P, R, N, Overdrive, 3, 2, 1
Case Material
Die Cast Aluminum
Transmission Weight Dry (Approximate)
298 mm Converter
70.5 kg (155.70 lb)
Transmission Weight Wet (Approximate)
298 mm Converter
80.5 kg (176.16 lb)
Hydra-matic 4L60-E
RPO Codes
M30
Production Location
Toledo, Ohio
Vehicle Platform (Engine/Transmission) Usage
Y
Transmission Drive
Longitudinally-Mounted Rear Wheel Drive
1st Gear Ratio
3.059:1
2nd Gear Ratio
1.625:1
3rd Gear Ratio
1.000:1
4th Gear Ratio
0.696:1
Reverse
2.294:1
Torque Converter Size (Diameter of Torque Converter Turbine)
298 mm
Pressure Taps
Line Pressure
Transmission Fluid Type
DEXRON® III
Transmission Fluid Capacity (Approximate)
298 mm Converter
Dry: 11.25 l (11.9 qt)
Transmission Type: 4
Four Forward Gears
Transmission Type: L
Longitudinal Mount
Transmission Type: 60
Product Series
Transmission Type: E
Electronic Controls
Position Quadrant
P, R, N, Overdrive, D, 2, 1
P, R, N, Overdrive, 3, 2, 1
Case Material
Die Cast Aluminum
Transmission Weight Dry (Approximate)
298 mm Converter
70.5 kg (155.70 lb)
Transmission Weight Wet (Approximate)
298 mm Converter
80.5 kg (176.16 lb)
#5
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Location: Bradenton FLORIDA
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I'me debating on a rear end gear change and need the A4 gear ratios for comparison purposes at various rpms for different rear end choices. If anyone can tell me where to find the transmission info, I would greatly appreciate it. I used to have it and cannot find it. No success with "search" either.
Ed
Ed
#6
Safety Car
Thread Starter
Thanks, guys, and Patches in particular. What I was after was the transmission gear ratios for each gear. I want to do a side-by-side on rpms, with a speed calc, on various rear end combinations in different gears. Thanks!
Ed
Ed
#8
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Location: Joliet ILLINOIS
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#9
Safety Car
Ed, I have a simple EXCEL program that calculates what you're wanting. You easily change the variables to your numbers. Takes into account different wheel/tire sizes.
If you would like it, pm me with your email and I'll send it to you.
Don
If you would like it, pm me with your email and I'll send it to you.
Don
#10
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Location: S.W. Ohio. . . . . . NRA Life Member
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it's both. G92 says "optional ratio"
G90 says "that optional ratio is 3.15"
makes you wonder what other ratio GM may have initially planned for the A4; but that putz (AlGore) wouldn't allow
on the A4, you can't have the 3.15 and not have both G90 & G92 listed.
So it doesn't matter on the C5 A4.
If you find G92 listed, then you have the 3.15 ratio.... that is a correct statement.
If you find G90 listed, then you have the 3.15 ratio.... that is correct statement.
#11
putzalgore is all one word with no capitols
:confus
it's both. G92 says "optional ratio"
G90 says "that optional ratio is 3.15"
makes you wonder what other ratio GM may have initially planned for the A4; but that putz (AlGore) wouldn't allow
on the A4, you can't have the 3.15 and not have both G90 & G92 listed.
So it doesn't matter on the C5 A4.
If you find G92 listed, then you have the 3.15 ratio.... [b]that is a correct statement[/
If you find G90 listed, then you have the 3.15 ratio.... that is correct statement.
it's both. G92 says "optional ratio"
G90 says "that optional ratio is 3.15"
makes you wonder what other ratio GM may have initially planned for the A4; but that putz (AlGore) wouldn't allow
on the A4, you can't have the 3.15 and not have both G90 & G92 listed.
So it doesn't matter on the C5 A4.
If you find G92 listed, then you have the 3.15 ratio.... [b]that is a correct statement[/
If you find G90 listed, then you have the 3.15 ratio.... that is correct statement.
#13
Team Owner
This is by far the best calculator I've found. The f-body.org calculator is for f-bodies and not c5s, and weight/aero play a role.
http://www.xse.com/leres/bin/gearrat...mference=79.20
Just type your desired gear ratio into the axle ratio box.
http://www.xse.com/leres/bin/gearrat...mference=79.20
Just type your desired gear ratio into the axle ratio box.
#14
Safety Car
Thread Starter
This is by far the best calculator I've found. The f-body.org calculator is for f-bodies and not c5s, and weight/aero play a role.
http://www.xse.com/leres/bin/gearrat...mference=79.20
Just type your desired gear ratio into the axle ratio box.
http://www.xse.com/leres/bin/gearrat...mference=79.20
Just type your desired gear ratio into the axle ratio box.
This is great! Thanks!
Ed
#16
Safety Car
Thread Starter
I believe you mean 2.73 gears. 2.73s were standard and 3.15s were the performance axle option in all C5 A4s. C5 M6s came only with the 3.42s. Also, take a look at post #10 by Mike Mercury. If you're wondering whether you have 2.73 or 3.15 gears, it should answer your question. If not, maybe someone else will jump in.
Ed
Ed
Last edited by C5XTASY; 12-31-2007 at 11:04 AM.