Originally Posted by RTBenny
In my case, my power peaked around 55-5600. This means the perfect shift from first to second would be around 62-6300. But wait, that's only assuming that the power drops off after peak at the same rate it rises to peak. That's probably not the case and if I had to guess, these trucks would probably do great shifting at 6500. I won't do it, but you guys feel free.
Thank you for the info on the harmonic balancer. This is the first I've heard of that issue.
Above you mentioned your power peaked at 5500-5600, making your perfect shift point 6200-6300. How did you come to this conclusion?
I'm not disputing you, just trying to understand how you figured that was the optimal shift point.