What is the difference bewtween the YA/YC 455 code? I have seen them listed TOGETHER as one in a few books. Other times I have seen just the YA code listed for the 455 70 GTO automatic. I have never seen just the YC code seperate. Some think its the CA version motor. My car has RA induction system. Would a YC be correct for this resto project?
Thanks... Jeff
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