Take the rear wheel hp which the calculator in the web site gives and multiply by 1.175 for your flywheel HP.
http://www.prestage.com/community/Ca...+/default.aspx
I figured my flywheel HP from an 1/8 mile trap speed of 91.5 with a 3720 # car with driver. I was running a brand new TA 49 and had to let off becaue I leaned way out. I never realy had a chance to tune becaue on that run I ran almost 26# of boost and the chip was burnt for 19# I was spraying Julio juice like a fire hose. The 02's were 670 but I had 0 Knock due to the ALKY when I lifted.
J Cotton has my order for a BBCPT65. I will have the right chip for this one.
MT ET street radials came Fed EX yesterday. Can't wait fo the track to open back up.