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FWIW: Ford 302 has 3.0" stroke; 1920 rpm gives 960 ft/mn piston speed.
If 1000-1200 is "optimal piston speed for efficiency" then that rpm range for the Ford 302 is 2000-2400 rpm.
Wish my F150 had a tach; I kinda know where the sweet spot is just by putting every mile on 'er since '94.
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