big block chevy closed chamber heads

 

hey i got a set of bbc heads off of my 468 that im not goin to use. heres the id number and specs. 336781.....73-85...oval...OPEN...454, 118cc chamber, 256/114cc ports , they have mild portin job done on them from the guy that built the motor for my friend. i dont know what kinda valve springs it has but i think it had a big cam but not too big. everything has 2000 miles on it, just needs a good cleaning. got pics if intreseted.