2007 TCRA Seminar

• M/Y 2007 Overview of GM Torque Converter Changes• GM’s New 6 Speed FWD 6T70/75E Converter – 246mm• GMSPO – TCC Retail Update

GM Torque Converters - M/Y 2007 Summary

245mm 4T45E, 4T65E, 4L65E, 5L40/50E• No significant design changes • 245mm replaced by 258mm in Inline 4 engine (midsize truck – Colorado/Canyon)

258mm 4T65E, 4L60E, 5L40E, 5L50E• L-5 continues with 258mm

265mm 4T80E• All Viscous units replaced with ECCC

280, 300mm 4L65E• 280mm to end production in 2007, replaced with 258mm in L-6 applications

310mm 4L85E • Continues, to be replaced 6L90E / 300mm

Note: Dex VI added to all products in May 2005- 4 speed products can use Dex III, VI or a mixture- 6 speed products only use Dex VI

GM’s new FWD 6 Speed

246mm

GM 6T70/75E Applications – M/Y 2007

Saturn Aura

Buick Enclave

Saturn Outlook

GMC Acadia

GM’s new FWD 6 SpeedGM 6T70/6T75 and Ford 6F50/6F55

Features:• All Wheel Drive available• Driver Shift Control• Internal Transmission Electro-Hydraulic Control Module (TEHCM)-GM only• Internal Mode Switch (IMS)• Performance algorithm – shifting• Automatic grade braking• Electronic range selection compatible• TCC availability 1st – 6th gears• Skip shifting• Reverse lock-out• Transmission abuse protection• Neutral idle compatible• Dual Gear limp home strategy – GM only• Flat Tow Capability• 6.04 overall ratio, 5th gear is direct drive, 6th gear is overdrive• GM design and co-developed / tooled with Ford Motor Co.

Approximately 90% of transmission elements are shared part numbers between GM and Ford

GM’s new FWD 6 SpeedGM 6T70/6T75 and Ford 6F50/6F55

Better Fuel Economy

Better

Fast

er

2-4% Improved EPAFuel Economy

7% Improved 0-60Performance

Typical 4 vs. 6-speed AT Axle Hook Analysis Comparison

6-Speed AT4-Speed AT

6T70E - Fuel Economy and Performance

246mm

• Currently only one K-factor 172K for GM & Ford

• Three and four lug versions for Ford and GM

• Pilots are different between GM and Ford

GM’s FWD / AWD 6T70/75E

Torque Converter Performance Data

0.00

0.50

1.00

1.50

2.00

2.50

3.00

3.50

4.00

0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00

Speed Ratio

TR /

Kin

/100

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

Effi

cien

cy

GM 6T70E 246mm 172K

GM 4t60E 245mm 163K

260mm 150K U660E ToyotaCamery

Efficiency

Torque Ratio

Input K-Factor

6T70/75E – 246mm Torque Converter

Pressure distribution around stator blade(Section at R70, 0MPa is in blue)

Zero pressure area

(0MPa high-lighted in blue)

General Motors Service & Parts Operations EC3 Opportunity

• Overview– General Motors Service & Parts Operations (GMSPO) has decided to

introduce its patented EC3 torque converter material with applied plates to the aftermarket

• Program– Focused for sale to torque converter remanufacturers– Approx 8 p/ns to cover 300mm, 245mm, 258mm and 265mm GM

applications– Packaged in unit quantities, then to follow with bulk packs if required in

the market

General Motors Service & Parts Operations EC3 Opportunity

• TCC assemblies and Bonded Pressure Plates Available• Distribution

– Available through GMSPO direct accounts:• AC Delco Transmission warehouse distributors

– Transtar, Axiom, NatPro and Seatac• 95 AC Delco Dedicated Distribution Group (DDG) warehouse distributors• Over 7000 GM Dealers

– For further distribution inquires contact your AC Delco distributor, GM Dealer or:

• Keith Loch, GMSPO 810-606-2576