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post #1 of 3 (permalink) Old 03-06-2008, 12:09 AM Thread Starter
 
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I need your help please!!

Hello I am the proud owner of a 66' GTO. Well here it is I really wont see it until I redeploy here in a little bit, so right now I am pretty much getting everything under the sun so when I get home I can start to work on her. Well here is my question. Apparently the engine code states that it is a "CY" I have had someone recheck this for me and I am still waiting for an answer. I have looked everywhere in regards to this. Now it could be miss read as YC and the motor is actually a 455 out of a 71 but I doubt that. Now I do know that there was an engine stamp with "CE" before which actually stood for Cheverolete Engine. Has anyone ever heard of a CY stamp? Ohh by the way the engine that was said to be in there is a 389. Again if anyone can help please let me know. Thank you
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post #2 of 3 (permalink) Old 03-06-2008, 05:40 AM
 
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Originally Posted by 66goat View Post
Hello I am the proud owner of a 66' GTO. Well here it is I really wont see it until I redeploy here in a little bit, so right now I am pretty much getting everything under the sun so when I get home I can start to work on her. Well here is my question. Apparently the engine code states that it is a "CY" I have had someone recheck this for me and I am still waiting for an answer. I have looked everywhere in regards to this. Now it could be miss read as YC and the motor is actually a 455 out of a 71 but I doubt that. Now I do know that there was an engine stamp with "CE" before which actually stood for Cheverolete Engine. Has anyone ever heard of a CY stamp? Ohh by the way the engine that was said to be in there is a 389. Again if anyone can help please let me know. Thank you
Here is a list of Pontiac Engine Codes. CY is not on the list. It may have been misread, which, I can tell you from expirience, is easy to do.

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Hope this helps.

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post #3 of 3 (permalink) Old 03-06-2008, 07:03 AM
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Here are some GTO only codes, might be easer to find what you have. You might have to check the casting #s too.
GTO Engine Codes!
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