[Keith Seymore]

Originally Posted by John V.

I can't speak to the 2nd gen Firebird but I do know about the '64 A body, GTO included. etc etc

My '65 GTO uses a radiator with plugs: the part number and broadcast code on the radiator match the build sheet found above the gas tank, so it's original.

Originally Posted by necdb3

I wonder what the GM parts catalogs would show 4spd vs. auto? If they are the same part numbers? Obviously what they did on an assembly line could vary from what's in a catalog though.

That is true, but usually the tendency is for the production part to be more specific (a more correct application) and the service part to be more generic: one part covering more applications so that fewer part numbers have to be stocked for service.

K

[necdb3]

Originally Posted by Keith Seymore

My '65 GTO uses a radiator with plugs: the part number and broadcast code on the radiator match the build sheet found above the gas tank, so it's original.



That is true, but usually the tendency is for the production part to be more specific (a more correct application) and the service part to be more generic: one part covering more applications so that fewer part numbers have to be stocked for service.

K

I agree as that has been my personal experience but, naturally, I haven't experienced everything