So I don’t know much about the 10L90 other than it’s a 10 speed in the Camaro and is rated for 650 hp & tq. The first 4 gears are lower than the 10A Allison and the next 6 are close to or the same.
So why would this not be a good candidate to go behind the 401 hp 464 tq L8T? Is it a duty cycle...