I HAVE A PAIR OF CYLINDER HEADS FROM MY 1967 CAMARO THAT WAS TOTALLED THE 327 ENGINE HAD 275 [...] HEADS ARE OEM OFF ENGINE AND ARE [...] HAVE THE DOUBLE HUMP MARKINGS ON THE SIDE. I NEVER HAD PROBLEMS WITH THE ENGINE. CAR HAD 87K ON CLOCK BEFORE IT WENT TO HE... Login to read more.