does this seem right???

[73-charger-383]

http://www.cuda-challenger.com/cc/index.php?topic=16698.0

if that's possible, i really gotta rethink my 383 buildup

[Chryco Psycho]

it depends on the Dyno used , probably used Westechs dyno , the #s seem optomistic by 10-15% but plausable , I would use the Speed pro 9.6 :1 forged piston , port the heads & use a different cam & shoudl get in the same range for HP with more durability