the 243 heads (LS6) are they or are they not 64c.c. heads?

confused to many LS, LT, vortecs. you know oh @#!%

 

i believe so

 

all this about lowering my compression if i swapped to the 243's
I guess i was under the impression that the heads off of my truck
were 64c.c. if you guys are saying that it would lower compression i must
be wrong about my heads having 64s

 

i checked and ls6 heads (ported ones at least) have 69cc combustion chambers

 

ok, do you know if is there any stock 243s w/ 64s

 

not off the top of my head

 

i have just been searching online and everything that comes up says that the 243's
LS6 heads are 64c.c.

 

i got the 69cc from west coast cylinder head, sponsor to the right in the flow chart from the pricing menu