3.73’s for auto, 4.10’s for 6 spd. Thats what 80% of all LSx owners swear by.
I actually was getting better gas mileage with the 4.10’s over the 3.42’s because they involve alot less shifting, moves the car easier etc…
at 75mph on the highway, with the 4.10’s im only at 2100rpms…thats with a 18" wheel.
the 3.42’s at 75, I was around 1700rpms, but I would hafto down shift just to accelerate or pass a car…4.10’s doesnt need it.
also with the 4.10’s i can skip gears…for example…
start in 2nd, get rolling…at 3k, shift to 4th