I have a 408/904 in my Aspen R/T and noticing my 60' times have been slowing down even with new slicks. I run a 8" TCS converter but when I run the play back after a run it shows it on the launch at 5400. When I had this motor on the dyno the torque was 550@4500 rpm. Should I have them tighten it up some on the stall?

Brad

77 Aspen R/T 60'@1.41 10.76 @ 123.26

http://www.youtube.com/watch?v=Eya3Ue8KoZk