J-58 Engine Starter Cart Note: This item is currently in storage. This engine starter cart was developed specifically for the SR-71 family of aircraft. It used two Buick V-8 racing car engines, linked together through a common gear box, to deliver power to the starter drive shaft of the aircraft engine. More than 600 hp from the two V-8 engines was required to "spool up" the J-58 to about 3,200 rpm for starting. Click here to return to the Featured Accessions index. Find Out More Related Fact Sheets Lockheed SR-71A Note: The appearance of hyperlinks does not constitute endorsement by the National Museum of the USAF, the U.S. Air Force, or the Department of Defense, of the external website, or the information, products or services contained therein.