have a cammed 5.3 ( ss2, full exhaust, CIA) with a 4l80e behind it ( bluecat tuned, stock 2600 stall) in a 08 silverado 1500 with 35s. stock gears are 3.73s usually 35s want 4.56 but with the short first gear in the 80e, would i better off with 4.88s? will be changing stall but not any time soon, dont tow basically anything but this trucks a pig off the line, rolling 40+ is very very strong. i dont do alot of highway driving but some so dont need to knock down the 15mpg i get rite now at 65mph.