1968 Chevrolet cylinder heads from 327-210 HP Chevy Camaro RS taken from running engine over 25 years ago, The cylinders heads have been hot tank degrees clean of oil and remove the orange paint ready for overhauling, No accessory holes on front and rear, valve size 1.72 / 1.50 combustion 69.cc matching casting # 3911032 date code E 31.8 & L 13.7 would also fit on 283 305 350 and used regular gas. These was used on Impala Bel Aire Chevelle Nova Chevy II, Malibu Pontiac, Beaumont, Acadian ,Chevy, GMC pickup truck pair $100. Ad will be deleted when item is sold.