for you ford fans....
 

Copy/Paste from one of the guys from NLOC

My buddy's Viper makes 520\580... its got slicks, skinnies, half shafts, intake, rockers, gears, and I think the heads are ported... I may be in trouble if he puts the bottle on it... My truck had a fresh belt on it and was slipping a little... spun to a 1.56 60'...

http://www.mnrimages.com/ViperBeating.wmv