Originally Posted by jed5161
car is right at 2000 with driver. we put the mickey 33.5's back on the car. The hoosiers were not new. they were ran on our pro mod car for a short 6-8 race season and then our spitzer Pro Top Outlaw dragster for about half season before going to a 36" top fuel tire.
Were changing from conventional heads (profiler cnc ported 365's) to either big chiefs or big dukes. Debating on shooting it with 200-300 shot of nitrous.
I'd like to be in low 4.70's high 4.60s on motor.
I dont think you need the dukes to get there, maybe some tweaking on what you have now. The profiler head seems to be a decent head, if it were mine Id loose the converter up a touch 6400-6500ish. You are launching very high also, which might be hurting more then helping.
My motor makes peak 1013hp but avg 985 and runs low 4.7's all day @ almost the same weight as yours, I launch @ 4200 shift on time @ 6700rpms, cross 1/4 @ 7100. My converter is 6800 9" spragless coan, its much more agressive and faster with my 6400 stall stuff though.