I have 4.10s. Changed from the 3.55s. I drive a lot. 48000 in a year. Have about 4,000 with the new gears. Drive a lot on the highway. go to Atlantic city about twice a month. My gas milaege has droped 2 maybe 3 miles to the gallon but i have been driving faster since i got them put on as well. i have other mods when and since i got them. 18inch rims from the 17s with nittos, Lowering springs, short throw, xpipe. So in short my car is louder period. so its hard for me to say exaclty how just the 4.10s changed my car. Other than the obvious, it accelerates a lot faster.
From a performance aspect you will love 4.10s gears. This engine loves the gear. Is it bad when it comes to driveability? No its not like you have some 4.55 or 5.00. But it isnt the 3.55s and surely not the 3.31s either. I have a problem with a rattle in my shifter so im very aggrevated with that, i know that seems random but my point is that is bugging me and its hard for me to focus on the overall "drivability" aspects of the car. (cant think of the three words, noise, something, something)
The 4.10s do make the car run at a higher rpm all the time. Cruising at 80 im at close to 3000rpms. get out on the highway and cruise at 3,000rpms if you want to know if it will annoy you. 70mph im at about 2500. I dont know if they add vibration or anything, i guess in the sense that the rpms are always up, yea. The car isnt jerky or anything if thats what you mean. If you want a cadilac than you might not like the gear. but you probably dont it to drive like a cadilac so in my opinion you will love the gear, i have never heard anyone who had 4.10s say they were sorry.... except for supercharged guys and thats just beucase they cant get traction.
So in a noise sense and vibration sense you will notice it. But in a jerky or driveability sense. no it doesnt make the car bad to drive around in. I love them and they shave like 5/10s off your 1/4 time. what else does that expcept a supercharger.
