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"The airplane is powered by two General Electric J79 engines. Aircraft
153071z thru 153087aa have J79-GE-8 engines installed, with a thrust
rating of 10,900 pounds each. Afterburner operation increases the
maximum thrust to 17,000 pounds. Aircraft 153088aa and up have
J79-GE-10 engines installed, with a thrust rating of 11,870 pounds
each. Afterburner operation increases the maximum thrust to 17,900
pounds each."

Seems strange that the -10 has only 2,000 more pounds thrust w/o burner and
only 900 pounds more with burner. I know that each aircraft has two engines
so that comes out to an additional 4,000 pounds thrust w/o burner.

Does that sound right?