Thanks everyone for the replys. A little further investigation and I found that the rear gear is not a 3.55 but a 3.23 which I think is going to be the real culprit. The van has always seemed a little under powered and now I think I know why, we have always traveled with either or both a trailer in tow and some sort of paddle craft on the roof, so the van is either fighting the weight or the wind resistance all the time. I think it is time to upgrade to a 3.90 rear gear. It will only increase the engine RPM by 500 at 60 mph.
|