First oil change(PROBLEMS)

OK, I changed my oil and filter today, the owners manual states 3.4 gts. with filter change, OK, I start to fill up the oil tank with oil and all of a sudden it overflows oil out of the top of tank, WTF, I do not have 2 gts.into tank and oil is running out the top, I started the engine for a split second to see if it would go down once the filter filled up with oil, no change, still at the top of fill neck, that's it I stopped and will call dealer tomorrow.
I can't think of anything I screwd up, just not sure what the hell is going on,, HELP.
Thanks
kenner