2019 ZL1 TRANSMISSION & AXLE as per GM's site.
Type:
TREMEC six-speed manual with Active Rev Match (standard)
Hydra-Matic 10-speed automatic (available)
Final Drive Ratio:
3.73 (manual)
2.85 (automatic)
Anything 1LE is broken out in the specs, so I have to assume that the ZL1 & ZL1-1LE are the same ratio. See the link provided below.
https://media.chevrolet.com/media/us...2019.tab1.html