If it's a stock clamp you'll want to find some clamp pliers that drive a cable, specific for those types of hose clamps:

http://cgi.ebay.com/ebaymotors/ws/eB...3D290173288561

John Schellenberg has a set - they were quite useful in removing stock clamps when we did the SC install. Otherwise you'll have to come up with some other way to get it off, but it's tools like this one that the shops use.

-- John