i been running 11,60 at 128 miles an hour with et streets 26x10.5x16.i was getting 1.60 60 foot.i've changed my set up to 315/35/18 toyo tq and getiing 1.60 60 foot .running 11'50 as my best time.but my mile an hour dropped to 120.very consistent on every pass.it's been pretty hot in high 80's low 90's at the track with track temps around 120.what would cause a low mph.car made 590 at the wheels with 2.2 kennebell.i have a new dual disc mccleod clutch.viper spec trans and built rear end with 3.73 gears.it's a convertible saleen so it weights around 3900 pounds with driver in it.any suggestions and helpfull comments appreciated.was hopping to run high tens and good mph.
