null

Shop by Category

6L80/6L90 General Specifications

What are the basic differences between GM's 6L80 and 6L90 transmissions?

 

GENERAL SPECS 6L80 TRANSMISSION 6L90 TRANSMISSION

RPO Code

MYC MYD
Transmission Drive Rear Wheel Rear Wheel
1st Gear Ratio 4.03 4.03
2nd Gear Ratio 2.36 2.36
3rd Gear Ratio 1.53 1.53
4th Gear Ratio 1.15 1.15
5th Gear Ratio .85 .85
6th Gear Ratio .67 67
Reverse Gear Ratio 3.06 3.06
Torque Converter Size 258mm or 300mm 300mm
Pressure Taps Line Pressure Line Pressure
Fluid Type Dextron VI Dextron VI
Case Material Aluminum Aluminum
GVW 8600 LBS 15000 LBS
GCVW 14000 LBS 21000 LBS
Net Weight 207-229 LBS 240 LBS

 

6L80 & 6L90 Transmission Parts & Rebuild Kits