the C4 and the stall will eat HP!! But the ET can be better than the 5 speed only cause you said your going to slicks... vs street tires with the 5 speed!! I run a C4 and 3800 stall... it shoots out of the hole when it is dialed in, but... a C4 and a loose converter will take 25-30% HP loss!! But HP doesnt win Drag races...ET does!! cool??
And when your winning the hi HP cars will still be blowing their tires away!! cool??
Street racing... sorry , but you cant beat a clutch!! ( launch RPM to the street traction and tires)
Just me......................
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