text: what engines came in the 1969 ford mustang mach i?   jerry odom's "a history of the ford mustang mach 1" http://www.jerryodom.com/mach1history.html  "standard engine was the new 351 c.i. v-8. this engine was basically an enlarged 302 and is known as the 351 windsor, as it was made in ford's windsor plant. with the two-barrel carburetor and single exhaust, the base mach 1 engine was rated at 250hp. the optional 290hp. 351 c.i. v-8 four barrel engine came with dual exhausts and chrome quad outlets. the old 390 c.i. v-8 was also optional, rated at 320hp, with the top engine option being the torquey 428cj, rated at 335hp."