273 5 speed conversion to ax15??

GONEFISHIN' said

'66 Barracuda 273-4bbl; A833 non-OD; 225/70R14's on the back; stock rear end; 2700 rpm @70mph

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Mathematically, that would be (70x1056)/ 26.4x3.1416x2700=3.03, so probably 2.94s. Mathematically 2.94s would be 2620; that is about a 3% error, well within the math for the tire roll-out and/or speed-O error.