We are offering thispair of Original GM Aluminum Big Block ChevroletHeads part number 3919842. These are the closed chamber factory Aluminum heads used on the L88 and L89 396 and 427 Special High Performance engines in 1967 1968 and 1969 Corvette, Camaro SS, Chevelle SS as well as a few Novas .These headswere checked and a valve job was recently done on them, so they are ready to go.There does not appear to be any extra porting on the intakes or the exhaust. No deck height shaving. This is a very nice set of heads and we guarantee them.Check out our othersales for more hard to find NOS, new and used parts for 1964-1981GMChevrolet Camaro, Chevelle, Nova,Corvetteand Pontiac Trans am, Firebird and GTO Models. offer with confidence, Camaro Specialties has been serving the restoration industry for over30 years. Feel free to call us with any questions you may have. Phone [phone removed by ]. We will ship anywhere.We welcome and encourage local inspection and pick up at our shop whenever feasible.