Small block TrickFlow heads part 1

I have an Australian 1974 Valiant Charger that weighs about 3200lbs with me in it. I have recently changed from home ported edelbrock heads to otb Trick flow heads. I also changed the cam from a 234/236 cam to a 237/243 cam with .620 lift and changed from an rpm air gap to a victor340 manifold. My old version made 392 rear wheel hp but new dyno results show 425 rear wheel hp. The dyno shows new combo to be making less torque but on the road the car feels much livelier than before as it is a five speed manual and just opening the throttle to about qtr way in second gear will just light the tyres and instantly revs go to six grand. The old combo has done a 11.4 @ 120mph but have not taken new combo to the track as due to coronavirus our track has been shut for about four months. I also had clutch slipping issues that have now been solved with a new twin plate clutch set up. When our track opens back up I hope the new combo will run a real low eleven sec time.