Where to lock up YankPT4000
Why do you want to lock it up? Are you running out of RPM?
I have seen that others ET better leaving the converter unlocked.
John
No problem.
I stall my TCI4000 to 1800 when I am looking for consistent runs like in bracket racing.
When I am going all out I will stall it to 2500 -3000 which usually gets me the best 60’ time.
60’ when stalled to 1800 ~1.55
60’ when stalled to 2500-3000 ~ 1.50-1.51
My old Yank 4400 liked to be stalled the same way.
John
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1.71 is a good 60' but it should be better. What tires are you running? What are your mods? What is your race weight?
John
Your results will vary. We are getting 1.42-1.43 60fts when it hooks solid. I would expect 1.48-1.52s depending on traction and your power level. That reduced 60ft will provide better ETs, ususally 2:1 on our car.
Good luck!!

