O/T Computers and re-gearing GMC
I recently purchased a 1995 GMC G-2500 full size conversion van. It has the 350, 4 speed aoutmatic, engine cooler and transmission cooler. Currently it has 3.42 gears and an open rear end.
My plans are to use this to pull my Jeep and 4 wheeler on my 18' car hauler which total will probably tip the scales somewhere around 6000 pounds.
What I would like to do is install 4.10 gears, and a factory limited slip. What will this do to the computer of this vehicle? Will I need a different computer completely or just a new speed sensor or speedo gear?
There are lots of hills here in Missouri, so I thought I'd go with the 4.10 gears to make it easier on the van.