How hard can a 273,run? (street/strip)?

My dad had a 66 hi-po 273 (to replace the dead 318 in it)he built in tech school (in 1976) it was .030 over 10.5:1 trw's solid cam that was very close to the 68 std. trans 340 appliance headders 2800 tci stall in the manual valveboded 727 with 4:10 out back in a 67 plymouth belveadere (buchered that!) He ran low 14's all day with it! Still regrets selling that car! Ill see if i can post a pic after work of it! I love thease motors!