88GT DREAM

OK so heres the deal, I NEED HELP!!!!! ok heres the story, my 1988 GT 5.0 was running great and a few times it has like cutout while driving only for a sec. Then the other day I was stopped to let some kids cross the crosswalk and when I started to accelerate letting the clutch out my car went into about full throtlle causing it to rev to about 7,000rpm spinning my tires so I pushed in the clutch let it simmer down which only took a couple seconds and then let out the clutch slow when it did it again and the I went to second gear let out the clutch and it was fine. Does anyone have any clue what could cause such erratic acceleration!? if so please let me know ASAP keeping my car may count on this...=[[

PRO50SC

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