273 Stroker, 4.00" Crank

I just switched laptops. My old one will still run my Dyno 2000 program. I know, it isn't really accurate but it's a fun comparison. My stock +.030 with a Isky E-4 cam is rated at 286 hp. @5500 with 307 ft./lb. torque@4000 rpm. With nothing else changed except for the 4" stroke, the hp. went down to 280@ 4500 with 354 ft./lb. torque @ 3500. Not a big change for a $1500+ kit...