ok guys i was thinking how much fun it would be to turn a 3 wheeler into a dragster. im sure i would never get around to it but still couled any1 plz tell me what the fastest 3 wheeler is?>

 

I'm not an old dude or anything, but if i remember right from the late 80's, the '86 kawasaki tecate was the fastest STOCK 3 wheeler ever made. Followed by the honda 250r, yamaha tri-Z, honda 350x, honda 200x, yamaha 225dx/dxr, honda 250sx, honda 250 big red. I can pull an old magazine to make sure though. I might still have that issue.
But you mention you want to make a "dragster." These aren't stock, so bother with the stock information? With the right engine, engine builder and chassis to handle it, you can make something totally off the wall beat everybody! Obviously, on a drag trike it will be hard to keep that front end down without an extended swing arm and drag "wheelie" bar, so make sure that stuff is on there.

I dont think i would ever embark on this journey, but i hope this helps.