The Cuda is getting a major upgrade in the HP department. Estimates from the both the machine shop and engine builder put the new stroker at 550+ hp and over 500 ft lbs. Car weighs 3500 lbs with driver. Tight 10" converter and 3.91 gears. With this combo, my pals here on Moparts have put estimated low 11s. I have no 4-point until next winter (but frame ties are going on before it hits track) and I know that would get me booted and weekend ruined if I went under 11.50s. I have a 3.23 gear and plan on making to swap so I can tune for max performance without busting the cutoff. Approximately how much should I expect to lose from this swap? I know it's not an exact science, but ballpark. 3 tenths? 1/2 second? More? I am aware the chassis needs to catch up with the motor, but that will have to wait until next winter.

Thanks,