Quote:
Originally Posted by Bernica
According to my books, the large "S" was cast on the '66-'68 390 GT manifolds. The '69 390 GT did not have the "S".
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My '69 390 GT had an S on it. My recollection is that it was behind the carb though, not in front. It was, however, a low rise intake that only shared an "S" with the early models. The cam was also a T-bird grind and not the same as the early ones( which are pretty much the same as the CJ specs). Finally it had an Autolite/Motorcraft carb and not a Holley.