theres a guy with a 1972 340, cuda, FS/A, 3325#,stock intake, , carb, small valve heads, 9.0 cr, hydcam, ran 10.97 @ 120MPH. looking at charts, etc, this motor made 445 HP. according to same charts, 587 HP, @ 3200#, should run 9.97 @ 133 MPH. we have a friend with a 340 duster, full stock car, weighs 3345 with driver- 200# =3145.dyno must be very generous?????