8L45 or 8L90?

blackgloves · 08-13-2019, 11:20 PM

I just got my 6th gen today so I know very little about them. What's the difference between these two automatic transmissions and how can I tell which one I have? I'll run the VIN if need be but was hoping to learn something here.

Thanks in advance

Joshinator99 · 08-14-2019, 12:22 AM

Quote:

Originally Posted by blackgloves

I just got my 6th gen today so I know very little about them. What's the difference between these two automatic transmissions and how can I tell which one I have? I'll run the VIN if need be but was hoping to learn something here.

Thanks in advance

You have neither...! 2016-2018 SS cars got the 8L90 which could handle more torque than the 8L45 version. 2019 SS cars got the new 10L80, so 10 speeds instead of 8 but with a lower rated torque capacity than the 8L90.

08-13-2019, 11:20 PM	#1
blackgloves Drives: 1987 Iroc Z/28 Join Date: Jun 2008 Location: Texas Posts: 147 View My Garage	8L45 or 8L90? I just got my 6th gen today so I know very little about them. What's the difference between these two automatic transmissions and how can I tell which one I have? I'll run the VIN if need be but was hoping to learn something here. Thanks in advance __________________ Current: 1987 IROC Z28 2021 GMC Canyon Elevation Former: 2019 2SS (Crush) 1978 Z28 2006 SS/SC Cobalt 2001 Z28 1999 Chevy S-10 Extreme 1972 Z28 1984 Z28

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