Allison Transmission Holdings, Inc., which manufactures fully-automatic transmissions for commercial, military and transit vehicles, filed on Friday with the SEC to raise up to $750 million in an initial public offering. The Indianapolis, IN-based company, which was acquired by Carlyle and Onex in August 2007, booked $1.9 billion in sales last year. BofA Merrill Lynch, Citi and J.P. Morgan are the lead underwriters on the deal. No pricing terms were disclosed.