There are reasons why you don't do that on a LT1Pressure washed the engine compartment
http://www.theformulasource.com/forums/index.php?showtopic=16824
http://www.impalassforum.com/vBulletin/showpost.php?p=2319087&postcount=9
There are reasons why you don't do that on a LT1Pressure washed the engine compartment