yes so far he likes the 4l80. last night was the first time out with the 4l80. he was shifting low and feeling the car out. we were thinking about going to the 3.90 gear but we may hold off til we get some good weather. i'm not sure what he crossed at because we didn't log it. it will be logged next time.
Daily Driver JRE TUNING LS9 cam Whipple supercharged