dls141
notice this thread started in Feb 2004 and stayed active till 2008. Lots of good info in this thread.
The turkey pan is killing your hp.
I did the cal's on an 8" S&S air filter on a 351W with 400 flywheel hp. At 4000 rpms it was losing 97 hp because of the filter.
use this link to cal your air filter. You can not get the proper size filter in the turkey pan.
Second Strike Air Cleaner Calculator
Dwight