Is there any way to tell if your floating a valve or if you exhaust is too restrictive? I finished my 383 about a month ago and it pulls unbelievably hard in first to redline. But in 2nd and 3rd seems to level off around 3500 and doesnt feel like its pulling anymore. Is this normal or could it be because I still have 3.42 gears. Im running LT4 springs and 1 5/8 headers. I went to the track not long ago and ran a 13.6 at around 105mph. Any ideas are greatly appreciated?