1965 273 Heads

hi, the 275 hp/273 was sold for the street use. only difference was, larger cam, headers, racer brown springs, holley carb, 4.86 gears. rest of motor was same as 235 hp/273. C.P. pistons makes 235 /273 pistons. egge also.
isky makes a very good grind for the 273, E 4 grind, works very well in 273 motor. the 1966-67 heads are closed chamber style, used on 273 /318 in those years.1967 for 318 though.