Your mis reading the first 3 numbers.
It's 14015445...454.......78-90...2 or 4 bolt

 

:thumbsup: Plain as can be. Also, dthomas2 should post his cylinder head PN & dates too. Most all BBC heads are not CI specific with exceptions like when particular cast numbers went out of production. Likely he has 454 heads on a truck/suburban motor unless they were changed. At any rate confirm if they are CC or OC and not the junk peanut port heads.

 

To determine just what you have,your info should be in this pic

 

Mine has the same #'s it's a '86 2 bolt 454 RV engine, had peanut port heads till I swapped to 69 427 063's to bring comp up.

 

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As stated you have a 454.

So since you made a mistake on block casting id wheres a pic of the head casting id #'s so we see them or could you at least post what you think casting #'s are on the heads.

In some cases multiple bbc's used same heads from GM on 396/402/427 & same heads on 402 (still called 396 in 1970-71 etc) & 454 bbc's too.

Scott

 

should post his cylinder head PN & dates too.

attached as requested

 

215 is a mid 60's 100.9 cc head brings compression up on a low comp. 454