I finally got some good settings for my 290x Tri X OC.  I am running 918KH/s with these settings in BAMT. Mine runs at 73 degrees with these settings. I also have a Cooler Master Haf X. So there are a lot of fans in my case! Thanks for the response rhaikh!

"intensity" : "20",
"vectors" : "1",
"auto-fan" : true,
"temp-target" : "75",
"temp-overheat" : "80",
"temp-cutoff" : "90",
"worksize" : "256",
"kernel" : "scrypt",
"lookup-gap" : "2",
"thread-concurrency" : "32765",
"shaders" : "0",
"api-listen" : true,
"api-port" : "4028",
"api-allow" : "W:127.0.0.1",
"expiry" : "60",
"gpu-dyninterval" : "7",
"gpu-platform" : "0",
"gpu-threads" : "1",
"gpu-engine" : "947",
"gpu-memclock" : "1425",
"gpu-powertune" : "20",
"log" : "5",
"no-pool-disable" : true,
"queue" : "0",
"scan-time" : "2",
"scrypt" : true,
"shares" : "0",
"kernel-path" : "/usr/local/bin"