06-18-09, 09:20 PM
I have read a bunch of strings on swapping in the 3.71 into cars that came with the 3.11 originally and had showed some performance gains (1/4 mile. 0-60) with the new gearing. I have a sts that already has the 3.71 and stock 16 inch wheels with 225/60's on them. What effect would it have with the final drive by putting on 225/40's? I know that my speedo would be off a bit and my ride height would be lowered a bit which would not be that bad side effect but I want to know if it would improve my 0-60 times or 1/4 mile time at all?