for a 455 are ca heads good or bad.The engine came with them but have heard mention of other heads being better.

 

CA Heads? Not GA?

I have never laid eyes on a C head with an A on it. now I'm not saying they do not exist, but C heads are good heads. I was once thinking that the A designator on the head signified hardened valve seats. California did have emissions items in 67 so it could be something that is California only for that year (1968).

John

 

I have never heard of CA Heads either. But if it's C or GA, then they are both good heads.

 

CA heads do exist. They are virtually identical to C heads. A good choice.

 

ok so I got a good deal then I was looking at some paper work on the 455 I bought and it has on there that it has ca heads and gives a casting number and then the info on the trans a th400 it is listed on the paper as a thd 400 long shaft