Originally Posted by
wlwarnke
I don?t feel like the ?desired shift time? is used for anything unless you have adaptives enabled and I don?t see that enable option in my 2003 tune.
When you said the log showed 1.255s for the shift, that want the recorded shift time, that the time you calculated based on commanded and RPM drop?
My approx .850s was calculated based on commanded and seeing rpm start to drop.
Damage above 6200rpm? I?ve heard that too. I rarely run her up that high. Not a race truck. She?s big.
Fluid and Filter changed last summer, maybe 2500miles. All was clean
When rebuilt (40k or 50k ago) all valves were removed, cleaned, inspected, screens were replaced. I don?t recall which feed holes were drilled. It was a Transgo HD2 (perhaps) kit.
Since the delay to ?initiate? 2-3 shift is consistent, I wonder if it?s always been then and only noticed now because the higher rpm, more powerful, faster revving engine?
At faster acceleration rates, .850ms can be a few mph and several hundred rpm.
I?d love to see a log of someone else?s 4L60e to compare