We have noticed no real change in slip % using various gear rations. We used everything from a 5.00 to a 5.48 in the car depending on the weather conditions and track. Stator changes will affect it but minimally. The lock up deal certainly changed the slip% but does not show on the time slip. Well that's not entirely true. We run the back half better with the lockup but we are much worse down low 0-60-330 which is where all the ET is. We used to have to run 5.09-5.12 to run 8.0's we now are running 8.0's going 5.18-5.20. We also have a high speed dump in the trans to drop the line pressure once out of low gear. We are changing the gearset in the trans this year as well as pump and stator combo to try and get back to 1.10-1.13 60' and 5.0's in the 1/8, but we may not get a chance to see if any of the engine and trans changes do anything this year.