Manual Transmission Ratios

Data for the MANUAL transmission Saturn Ion

1st     2.538
2nd     1.875
3rd     1.421
4th     1.190
5th         1.042
6th         0.960
FDR         3.867

MPH = RPM * Diameter tire / gear ratio * 336

GM High Performance Vehicle Operations have developed the new Performance Package Option for the Cobalt SS/SC to give the supercharged coupe an edge on the track. The great thing about the package is that is benefits the street driver, too. The package includes Recaro seats (to stick the driver to the car) and most importantly a Quaife ATB Differential (to stick the car to the road)!
So when ordering your new Cobalt SS Supercharged, make sure to select the Performance Package G85 option to get your Cobalt Quaife-equipped! Quaife ATB LSD (Active Torque Biasing Limited Slip Differential)
Already own a Cobalt SS S/C without a Quaife? You can order one from me under part number 57.309.180

2006 F35 (MU3)  <<< FastFiero's choice of transmissions for the 3800SC and LS1 future installs.
Type: transverse front wheel drive, five
speed manual transaxle ( optional
with limited slip differential )
Engine range: 2.0L I-4 supercharged
Maximum engine torque: 200 lb-ft ( 271 Nm )
Maximum gearbox torque: 258 lb-ft ( 350 Nm )
Gear ratios: MU3
First: 3.38
Second: 1.76
Third: 1.18
Fourth: 0.89
Fifth: 0.7
Reverse: 3.17
Final Drive 4.05
Maximum validated gross vehicle weight: 5071 lb ( 2300 kg )
Case material: aluminum
Center distance: 76.5 mm
Fluid type: Castrol BOT 0063
Transmission weight: 45 kg ( 99 lb )
Fluid capacity (approximate): 1.7L / 2.0 qt ( dry )
Power take off: no
Applications: Chevrolet Cobalt SS
Saturn Ion Red Line

2006 F40 (MT2)
Type: transverse front wheel drive, six
speed manual transaxle
Engine range: 3.9L
Maximum engine torque: 245 lb-ft ( 333 Nm )
Maximum gearbox torque: 295 lb-ft ( 400 Nm )
Gear ratios: MT2
First: 3.77
Second: 2.04
Third: 1.32
Fourth: 0.95
Fifth: 0.76
Sixth: 0.62
Reverse: 3.54
Final Drive 3.55
Maximum validated gross vehicle weight: 3527 lb ( 1600 kg )
Case material: aluminum
Center distance: 197 mm
Fluid type: Castrol BOT 0063
Transmission weight: 56 kg ( 123.5 lb )
Fluid capacity (approximate): 3.1L / 3.27 qt ( dry )
Power take off: no
Applications: Pontiac G6

2006 Getrag F23 (M86/MG3)
Type:
Engine range:
Maximum engine torque:
Maximum gearbox torque:
Gear ratios:                     M86                         MG3
First:                                 3.58                         3.58
Second:                             2.02                         2.02
Third:                                 1.35                           1.35
Fourth:                                 0.98                         0.98
Fifth:                                     0.69                         0.81
Reverse: 3.31 3.31
Case material:
Center distance:
Fluid type:
Transmission weight:
Power take off:
Chevrolet HHR (M86)
Chevrolet Cobalt (M86)
Pontiac Pursuit (M86)
Saturn Ion (M86)
transverse front wheel drive, five-speed
manual transaxle
2.2L - 2.4L DOHC (M86/MG3)
155 lb-ft (210 Nm)
170 lb-ft (230 Nm)
Maximum validated gross vehicle weight:         M86: 4094 lb (1857 kg)
                                                                                        MG3: 4475 lb (2030 kg)
aluminum
75mm
DEXRON III
46.3 kg (102 lb)
Fluid capacity (approximate): M86: 1.7L / 1.8 qt (dry)
MG3: 1.8L / 1.9 qt (dry)
no
Applications: Chevrolet Cavalier (M86)
Pontiac Grand Am (M86)
Saturn VUE (MG3)

Quaife F25 Gear Ratio 6 speed kit details:

1st     2.538
2nd     1.875
3rd     1.421
4th     1.190
5th         1.042
6th         0.960
FDR         3.867

$4795
That's with no LSD and has to be imported from Quaife UK.

I see why the LSD is available now on the F25

Same part number for the Ion and Cobalt

http://www.nolimitmotorsport.com/quaife/

New 2008 notes:

2008 GME F35 (MU3)

2008 Model Year Summary

GME 5 speed manual transmission

NEW for 2008 Model Year

• Chevrolet HHR SS is announced on 08/16/07
• In house manufactured limited slip differential for turbo applications (optional)
• New external shift system

 The Chevrolet HHR SS turbo application launches with the F35 4.05 final drive.   The external shifter system for both applications has been improved with shorter travel and smoother gating.

Carryover Summary shown below

LOW MAINTENANCE

The MU3 uses a Castrol Burmah (BOT 0063) manual transmission fluid, and is validated as "fill-for-life". No maintenance is required for normal operation.

OVERVIEW

The F35 features a two-axis conventional transverse layout, fully synchronized gears, and compact packaging. It features higher torque carrying capacity than many other manual transaxles currently in use in North American small cars.

Different versions of the transaxle are available, depending upon application. Both cable and rod shift mechanisms are available, as well as application-specific clutch housings. The MU3 and MC2 are differentiated by ratios (see specs), with the MC2 available with a lower top-gear ratio.

Design features include triple-cone synchronizers on 1^st and 2^nd gears, and single-cone synchronizers for 3^rd, 4^th, 5^th and reverse gears.

A limited-slip differential is available for high-output applications. This torque-sensing differential is an all-mechanical geared unit that uses no clutch packs or preloading to transfer torque from one axle to the other, and torque transfer occurs automatically when one wheel loses traction. Torque transfer also occurs gradually, without steps.