While I have never raced on radials, I do know they need alot of heat for them to stick well.
As far as raising your shift point, it becomes trial and error especially since your only talking 1-200 more.
If your on a tune with an automatic you will notice a difference but with a manual or manually shifting a automatic, I believe you won't notice due to the fact that you have human reaction time to factor in.
93' LX hatch, 460 w/150 plate, TH400, 9" w/ 3.60 spool. Best (so far!) of [email protected] 146 mph with 1.40 spinning 60' on steel heads Reese,
Been saying single digit coming for 3 years.....guess I finally made it!