2010 4.8 CCSB best rear gear ratio
03-08-2017, 06:14 PM
#11
On The Tree
A good friend of mine has a 13' RCSB with the 4.8/65E/3.23 combo. It's a pig, the 3000 stall helped some. He's thinking 4.10s - I am trying to convince him to go with 4.56s. He's on a 32" tall tire, and will be installing a TSP Stg 3 cam soon. (216/220 .600" 110 LSA)
My 01' is a lighter truck, had 3.42s factory with the 4.8/60E. I swapped to 4.11s, it was much better. But still felt like it needed more gear. I am on a 31" tire BTW.
My 01' is a lighter truck, had 3.42s factory with the 4.8/60E. I swapped to 4.11s, it was much better. But still felt like it needed more gear. I am on a 31" tire BTW.
So many of these new vehicles have a 31-32" tire and are running 3.08 gears. What the Hell is that with two OD gears? if you are running a lighter and smaller tire Camaro/Corvetter sure, but 5500lb vehicles no way with the 6L80 having a .85 and .67 OD's the torque rpm's dictate at least a 4.10 gear ratio which with 31" tires give you 2K at 70 mph.
