Let's try this again. I have a block, Casting numbers 14093638. My research says it is a 350, 86-94. On it are heads, Casting numbers 354434, which my research says are off of a 262/305, 60cc. 75-80. There is a stamping on the rear drivers side 8633. I am trying to determine if these heads are Corvette, and if this is a good match. I want to put this in something along with a 350 tranny I have. I am not a gear head but not a novice around engines either. I just want to be sure of what I have before I go further.Any help would be really appreciated. Thanks