Real World Transmission Gear Ratio's

[Fit4aking]

If you haven't noticed I've been relatively obessed with finding and logging real world trans gear ratio's.  I think it all stems from me not wanting to get down to setting one up after logging a power/torque curve for each gear.  I found and applied the gearing for a stock Panoz Esperante and I was very pleased with the results.  I was way off on my setup.  I'm gonna keep a running list of trans ratios and what car I found them in.  I'm not saying they are going to work in the Forza world but if you ask me its worth a shot.  I'm gonna start with the cars that I use the most, but I'm not opposed to any car or trans type.  Requests welcome but I doubt the gears from a Honda will help much as they are set up for fuel economy, but if you really want it I'll try.

Audi

S4 (B7)
3.67, 2.05, 1.46, 1.13, 0.92, 0.78
Final Drive:3.89

BMW

E30 M3 (Evolution II)
3.72, 2.40, 1.77, 1.26, 1.00
Final Drive: 3.15

E30 M3 (Group A)
2.34, 1.68, 1.36, 1.15, 1.00
Final Drive: 3.15 - 5.28

E36 M3
4.20, 2.49, 1.66, 1.24, 1.00
Final Drive: 3.15

E46 M3
4.23, 2.53, 1.67, 1.23, 1.00, 0.83
Final Drive: 3.62

R1200S
2.28, 1.58, 1.26, 1.03, 0.90, 0.81
Final Drive: 2.75

Chrysler

Crossfire SRT
4.46, 2.61, 1.72, 1.25, 1.10, 0.84

Dodge

A833 4-Speed
Close Ratio: 2.66, 1.91, 1.39, 1.10
T/A High Performance: 2.47, 1.77, 1.34, 1.10

(No final drive listed, varies by car)

Ferrari

250 GTO
2.93, 1.97, 1.45, 1.17, 1.0
Final Drive: 4.85, 4.57, 4.25, 4.00, 3.88, 3.77, 3.66, 3.55

Ford

Escort RS Rally Car
ZF S5-18
2.30, 1.60, 1.38, 1.15, 1.00

Focus
MTX75 5-Speed (Quaife)
2.64, 1.82, 1.40, 1.18, 1.04
Final Drive: 3.62, 3.82, 4.06, 4.25, 4.60, 4.86

Ford GT Ricardo 6-speed
2.61, 1.71, 1.23, 0.94, 0.77, 0.63
Final Drive: 3.36

T5 and T55 Top-Loader
Close Ratio: 2.32, 1.69, 1.29, 1.0
Wide Ratio: 2.78, 1.93, 1.36, 1.0

(No final drive listed, varies by car)

General Motors

C6/Z06
2.66, 1.78, 1.30, 1.00, 0.74, 0.50
Final Drive: 3.42

LS1/MN6 6-speed (Corvette and CTS-V)
2.66, 1.78, 1.30, 1.00, 0.74, 0.50

LS6/M12 6-speed (Corvette and CTS-V)
2.97, 2.07, 1.43, 1.00, 0.84, 0.56

Muncie
M21: 2.20, 1.64, 1.28, 1.0
M20: 2.52, 1.88, 1.46, 1.0

(No final drive listed, varies by car)

ZF 6HP26 (Vette)
4.17, 2.34, 1.52, 1.14, 0.87, 0.69
Final Drive: 2.53, 2.73, 3.46

Holden

6L80E
4.02, 2.36, 1.53, 1.15, 0.85, 0.67

Honda

D15B7 1992-1995 Civic
3.25 - 1.761 - 1.172 - 0.909 - 0.702
Final Drive Ratio 4.058

D15Z1 1992-1995 Civic
3.25 - 1.761 - 1.066 - 0.852 - 0.702
Final Drive Ratio 3.25

H22A 1997 Prelude
3.23 - 1.956 - 1.344 - 1.034 - 0.821
Final Drive Ratio 4.266

S1 (90-93 Integra LS/RS)
3.25 - 2.052 - 1.416 - 1.103 - 0.87
Final Drive Ratio 4.133

S1/J1 (JDM Integra DA6 Integra Xsi 1989-1990)
3.23 - 2.105 - 1.458 - 1.107 - 0.848
Final Drive Ratio 4.4

S1/YS1 (US Integra RS/LS/GS 1990-1993)
3.23 - 1.9 - 1.269 - 0.066 - 0.742
Final Drive Ratio 4.266

S40 (US D16Y SOHC VTEC 1992-1995)
3.25 - 1.909 - 1.25 - 0.909 - 0.702
Final Drive Ratio 4.25

S80 (Integra LS / RS GS 94+ )
3.25 - 2.052 - 1.416 - 1.103 - 0.87
Final Drive Ratio 4.133

S80 (US Integra LS/GS 1994)
3.23 - 1.9 - 1.269 - 0.966 - 0.714
Final Drive Ratio 4.266

Y1 (JDM Civic / CRX SiR 1989-1991)
3.166 - 2.052 - 1.416 - 1.103 - 0.87
Final Drive Ratio 4.266

Y20/S80 (US Integra GSR 1994-2001)
3.23 - 1.9 - 1.36 - 1.034 - 0.787
Final Drive Ratio 4.4

Y20/S80 (JDM SiR 1993)
3.25 - 1.9 - 1.36 - 1.034 - 0.787
Final Drive Ratio 4.4

Y21/S21/S4C (US DelSol/CRX 1993)
3.307 - 2.105 - 1.458 - 1.107 - 0.848
Final Drive Ratio 4.4

Y21/S21/S4C (US Civic Si 1999)
3.23 - 2.105 - 1.458 - 1.107 - 0.875
Final Drive Ratio 4.266

Y21/S21/S80/S4C (US Integra Type R 1997 - 2001)
3.23 - 2.105 - 1.458 - 1.107 - 0.848
Final Drive Ratio 4.4

Y21/S21/S80/S4C (JDM Civic SiR / Type R 1992)
3.23 - 2.105 - 1.458 - 1.107 - 0.848
Final Drive Ratio 4.4

Y21/S21/S80/S4C (JDM Integra Type R 1995 1997)
3.23 - 2.105 - 1.458 - 1.107 - 0.848
Final Drive Ratio 4.4

Lotus

Elise Sequential 6-speed (Quaife)
2.56, 2.07, 1.69, 1.41, 1.20, 1.05
Final Drive: 3.92

Mazda

Miata
6-Speed
3.76, 2,27, 1.65, 1.26, 1.00, 0.84
Final Drive: 3.91

5-Speed
3.14, 1.89, 1.33, 1.00, 0.82
Final Drive: 4.30

4-Speed Automatic
2.45, 1.45, 1.00, 0.73
Final Drive: 4.10

Quaife Close Ratio 5-Speeds
2.56, 1.67, 1.28, 1.00, 0.79
2.35, 1.55, 1.24, 1.00, 0.88

Nissan

Skyline GT-R (R34) stock transmission
3.83, 2.36, 1.69, 1.31, 1.00, 0.79
FD 3.55

Skyline GT-R 6-speed sequential Quaife box
2.80, 2.00, 1.54, 1.19, 0.92, 0.77


Panoz

Esperante GT (Race Version)
Tremec TKO-6000, 5-speed
2.87, 1.89, 1.28, 1.00, 0.82
Final Drive: 3.89, 3.50

Porsche

997 GT3 Cup
3.16, 2.13, 1.72, 1.40, 1.15, 0.96
Final Drive: 4.0

Toyota/Lexus

P51 (Early Celica)
3.52, 2.05, 1.40, 1.00, 0.86

R154 (Multiple Applications)
3.25, 1.96, 1.31, 1.00, 0.75
Final Drive: 3.73

RA62 6-Speed (Lexus IS300/350, RS200/Altezza)
3.79, 2.28, 1.52, 1.12, 1.00, 0.79

T50 5-Speed (Toyota Sprinter, Stock)
3.59, 2.02, 1.38, 1.00, 0.86
Final Drive:4.30

TRD811 (Toyota Sprinter)
2.34, 1.61, 1.20, 1.00, 0.88
Final Drive: 4.30

TRD851 (Toyota Sprinter)
2.63, 1.89, 1.38, 1.00, 0.86
Final Drive:4.30

TRD/Quaife
2.35, 1.73, 1.38, 1.15, 1.00

W55 (Celica/Cressida/Supra/IS)
3.57.2.06, 1.38, 1.00, 0.85

W57 (Celica/Supra/IS)
3.29, 1.89, 1.28, 1.00, 0.86

W58 (Non Turbo Supra)
3.29, 1.89, 1.28, 1.00, 0.78

(No final drive listed, varies by car)

TVR

Tuscan S and Tuscan R
3.32, 2.09, 1.40, 1.00, 0.79
Final Drive: 3.31

Sagaris
2.95, 1.95, 1.34, 1.00, 0.80
Final Drive: 3.73

[TheJohnNewton]

Cool man.  Thanks for doing the  research for us lazy guys

[Blooze]

Thanks a bunch Fit!  Good Job.

This will make for some interesting setups in the D and C MInc cars fer sher...

$

[Fit4aking]

Interesting sidenote from a site that lists the factory trans specs. 

The factory Suspension/Alignment specs
Ft Springs 525lbs
Rear Springs 714lbs
Ft Camber -0.75
Rr Camber -0.25
Castor 7.5 (WOW)

Ooops Sorry, C5 Corvette Z06

[Blooze]

That would be a 42% Wb in a Forza Blooze Toon... what car is it on?

  $

[bimmerlovere39]

The E46 M3 CSL has (IMO) a good set.  I'll post them up if you'd like.

I love how Forza lets us do this - swap a Panoz tranny into a TVR, then put a TVR tranny in a Civic.  In theory, of course! 

[Fit4aking]

Updated Ford GT and Ferrari GTO.

Didn't know that the Ford GT trans was built from scratch or that the Ferrari's used a PORSCHE trans.

Still searching for the Speed 12 trans but the Hollinger Sequential trans is very versital and has been used by a ton of tuners.  Specifically Nissan and Honda RWD tuners, as well as a few Mitsu's.

[Fit4aking]

Updated the sheet to include the Lexus 5 and 6 speeds.  I think that figuring out the gearing will help this car more than a rebuild.  Since this is next on the list for my C-classers I'll be applying and testing it this week.

Also included is the Toyota Sprinter 5 speed variants from the factory as well as TRD.

[gs shyner]

Maybe knock some more trannies off the list?

http://www.caranddriver.com/assets/download/0703_hc_and_os_powertrain_ss.pdf

http://www.caranddriver.com/bodystylereviews/coupe/

G

[landstuhltaylor]

C6 Z06:

Final: 3.42 1st: 2.66 2nd: 1.78 3rd: 1.30 4th: 1.00 5th: 0.74 6th: 0.50

I have read the the ZR1 will have a 2.39 first gear and a 0.67 sixth. It sounds like the rest of the cogs will stay the same.

[Tonka Crash]

Has anyone looked at gear ratios for the diesels in the game?  I ran the Peugeot for my R1 times and even though I collected the torque vs rpm data for it, I don't really feel that I did the best job picking the tranny gear ratios.

[Ske]

Some Honda gearboxes, from www.hondatech.com.au :

Y1 (JDM Civic / CRX SiR 1989-1991)
3.166 - 2.052 - 1.416 - 1.103 - 0.87
Final Drive Ratio 4.266

S1/YS1 (US Integra RS/LS/GS 1990-1993)
3.23 - 1.9 - 1.269 - 0.066 - 0.742
Final Drive Ratio 4.266

S1 (90-93 Integra LS/RS)
3.25 - 2.052 - 1.416 - 1.103 - 0.87
Final Drive Ratio 4.133

S1/J1 (JDM Integra DA6 Integra Xsi 1989-1990)
3.23 - 2.105 - 1.458 - 1.107 - 0.848
Final Drive Ratio 4.4

S80 (Integra LS / RS GS 94+ )
3.25 - 2.052 - 1.416 - 1.103 - 0.87
Final Drive Ratio 4.133

Y20/S80 (US Integra GSR 1994-2001)
3.23 - 1.9 - 1.36 - 1.034 - 0.787
Final Drive Ratio 4.4

S40 (US D16Y SOHC VTEC 1992-1995)
3.25 - 1.909 - 1.25 - 0.909 - 0.702
Final Drive Ratio 4.25

D15Z1 1992-1995 Civic
3.25 - 1.761 - 1.066 - 0.852 - 0.702
Final Drive Ratio 3.25

D15B7 1992-1995 Civic
3.25 - 1.761 - 1.172 - 0.909 - 0.702
Final Drive Ratio 4.058

D16Y5 / D16Y7 2000 Civic
3.25 - 1.782 - 1.172 - 0.909 - 0.702
Final Drive Ratio 3.722

D16Y7 2000 Civic Coupe / Sedan
3.25 - 1.782 - 1.172 - 0.909 - 0.702
Final Drive Ratio 4.058

D16Y8 2000 Civic
3.25 - 1.909 - 1.125 - 0.909 - 0.702
Final Drive Ratio 4.25

D16Z6 1992 - 1995 Civic Hatch & Sedan
3.25 - 1.909 - 1.125 - 0.909 - 0.702
Final Drive Ratio 4.25

D16Z6 1992 - 1995 Civic Coupe
3.25 - 1.909 - 1.125 - 0.909 - 0.75
Final Drive Ratio 4.25

Y20/S80 (JDM SiR 1993)
3.25 - 1.9 - 1.36 - 1.034 - 0.787
Final Drive Ratio 4.4

Y21/S21/S4C (US DelSol/CRX 1993)
3.307 - 2.105 - 1.458 - 1.107 - 0.848
Final Drive Ratio 4.4

Y21/S21/S4C (US Civic Si 1999)
3.23 - 2.105 - 1.458 - 1.107 - 0.875
Final Drive Ratio 4.266

Y21/S21/S80/S4C (US Integra Type R 1997 - 2001)
3.23 - 2.105 - 1.458 - 1.107 - 0.848
Final Drive Ratio 4.4

Y21/S21/S80/S4C (JDM Civic SiR / Type R 1992)
3.23 - 2.105 - 1.458 - 1.107 - 0.848
Final Drive Ratio 4.4

S80 (US Integra LS/GS 1994)
3.23 - 1.9 - 1.269 - 0.966 - 0.714
Final Drive Ratio 4.266

Y21/S21/S80/S4C (JDM Integra Type R 1995 1997)
3.23 - 2.105 - 1.458 - 1.107 - 0.848
Final Drive Ratio 4.4

S80 (JDM Integra Type R 1998 2001)
3.23 - 2.105 - 1.458 - 1.034 - 0.787
Final Drive Ratio 4.785

H22A 1997 Prelude
3.23 - 1.956 - 1.344 - 1.034 - 0.821
Final Drive Ratio 4.266

FD mods:
USDM Final Drive 4.400
JDM Final Drive 4.786
ATS Final Drive 4.929
Spoon Sports Final Drive 4.857

[Fit4aking]

Good Lord Ske, you stumbled onto a gold mine of info.  I've been tearing up the net looking for any published gear ratios for the Ricardo Engineering transmissions used in most of the LeMans cars.  Unlike Tremec, they don't have a list of available ratio's that I can find.  Both the gas and diesel LMP's use them and I had a post about them.

I'll have to apply the ratio for the Civic to my only built FWD car, the 06 Civic from the Motegi Challenge.  We'll see if I can use just that change to improve my best time.

Thanks Ske.  (Don't know if it will fit into the original post though)

[Drift2XL]

The problem with the race specific trans is that they have infinite gear ratios. Try looking up G-Force or Jerico. The ratios are set by the cars weight, HP-Tq of the engine, and the track they are used at.

With OEM providers and street aftermarket, the ratios are set for production.

You might have to go to the teams to find out what the ratios would be. Or to the series rulebooks to see if there are set gear ratios; FD, certain gears.

Generally, the lighter the car, the higher the gear. As well as specific track lengths.

It reminds me of what I heard on Top Gear while Capt Slow was preparing to top out the Bugatti Veyron. The engineers tried to go to a F1 team to get wind tunnel and gearing help. They got nothing because the F1 cars didn't go that fast. They ended up going to a military wind tunnel to deal with those speeds.

[landstuhltaylor]

It reminds me of what I heard on Top Gear while Capt Slow was preparing to top out the Bugatti Veyron. The engineers tried to go to a F1 team to get wind tunnel and gearing help. They got nothing because the F1 cars didn't go that fast. They ended up going to a military wind tunnel to deal with those speeds.

That's strange, because in the V10 days they did get up to about 240 at Monza.