Quote:

Quote:

.87? I thought 4th in that trans was more like .75?


Daytona you are right, I changed my post. I had it wrote down wrong. Gear ratio is 2.48, 1.48, 1.00, 0.75. Not sure why I was thinking .87, brain malfunction I guess. I use Compushift and I can program the shift speed and when I bring in the overdrive. I also have a set of 35 spline axles as well as the 40s. Going to keep the 40s and pro gears and spool as a unit in case I want to put it back in. Most of my driving is in town and the overdrive is only used when I hit the highway. Thanks for your input guys.




Well then a 3.91 would give you a nice highway rpm with that overdrive.

http://vexer.com/automotive-tools/speed-rpm-calculator