450 HP 273 video. Sound alone is worth it.
Here's another high reving Mopar motor on a dyno. Watch the rpm and power readings - with the volume up of course.
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![](http://i28.photobucket.com/albums/c238/stumpernc/Savoy/Video%20clips/th_SDC10052.jpg)
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This one is a stock stroke 440 ..... runs like a small block.