EXHIBIT 99.1

STEWART & STEVENSON ANNOUNCES

FISCAL 2005 THIRD QUARTER EARNINGS RELEASE AND

CONFERENCE CALL SCHEDULE

HOUSTON –November 22, 2005– Stewart & Stevenson Services, Inc. (NYSE: SVC), today announced plans to release its fiscal 2005 third quarter results on Wednesday, November 30, 2005 at 6:00 a.m. Eastern time.  In conjunction with the release, Stewart & Stevenson has scheduled a conference call, which will be broadcast live over the Internet, on Wednesday, November 30, 2005 at 10:00 a.m. Eastern time.

What:	Stewart & Stevenson Third Quarter Earnings Call
When:	Wednesday, November 30, 2005 at 10:00 a.m.  Eastern time
How:	Live via phone - By dialing 800-299-6183 or 617-801-9713 and
	using pass code 28695450 at least 10 minutes prior to the start time –
	OR live over the Internet by logging on to the web address below:
Where:	http://www.ssss.com
	The call may be accessed on the home page of Stewart & Stevenson’s website.

A telephonic replay of the conference call will be available for one week and may be accessed by dialing 888-286-8010 or 617-801-6888 and using pass code 21556853. An audio archive will also be available on the Stewart & Stevenson website at www.ssss.com on the Investor Relations, Audio Archive page shortly after the call and will be accessible for approximately 12 months.

Stewart & Stevenson Services, Inc., founded in 1902, is a billion-dollar company that manufactures, distributes and provides service for a wide range of industrial products and diesel-powered equipment to key industries worldwide, including power generation, defense, marine, petroleum and transportation.  For more information on Stewart & Stevenson visit www.ssss.com.

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