Gear upgraded, 3.08 to 4.10
I just upgraded the gear in my Suburban from 3.08 to 4.10! Still need to go to a speedo shop to get the speedometer calibrated. First drive today, it's feels quite a bit more responsive though it's...
Forum Discussion
bfourman wrote:
I have been milling around in my head whether or not it would be more effective to change gear ratio from 3.73 to 4.10 in my Yukon XL 2500 or to work on improving engine torque and HP at the RPMs I'm currently at. It would only be a 2-300 RPM change and I'm not sure that would be enough for my 4 speed trans to make a difference.
OP here. I created a spreadsheet to calculate RPM at different speed (40 to 70 mph, increment of 10 mph) in different tranny gears with all the possible axle upgrade. That helped me to decide which one to upgrade. I'm coming from 3.08 so I had many options. If you want to PM me your email, I can email you my spreadsheet and you can change the numbers to match your vehicle.
If your Yukon is 4x4 you'll have to change from rear and front gear. That may affect the decision.
please pm me your spreadsheet and thank you so much for putting this together. i'm looking to move from 3.08 to 4.10 and dont know where to start my research
The post you are replying to is over seven years old from the old RV.Net days, you may want to PM the poster in hopes they are still around occasionally.
