Guys, I bought a '64 Nova SS last weekend. In an attempt to ID the engine, I have found... Date Code- J 20 7 Block ID- 8921968 Suffix Code- BA The car has a turbo 350 so I doubt the engine is original to the car. From what I can find, the date code tells me 1967 or 1977. The block ID tells me 230ci or 250ci from 1964 to 1976. These two facts tell me 1967. I can find the BA suffix starting in '68 meaning 230ci with a 3speed manual. But in '69 it went to 250ci. I can't find the BA suffix code earlier than '68. Can anyone help? I used these websites so far.. http://www.castingnumbers.info/site/detail/18266/3921968 http://67-72chevytrucks.com/vboard/showthread.php?t=415319 Thanks!
the carb number is 7028014 and is a Rochester. If it is original to the engine, the engine would be a '68 or '69 from what I can find. This still doesn't help determine if it is a 230 or 250 though. *edit- seems like the 28 in the carb PN means '68. so ***uming this is the stock carb for the engine, it is a 230. Anyone have some suggestions to give a 100% ID?
the "J" in the date code is Sept. or Oct. depending on whether they (GM) used the "I" that year. Either way, with a casting date that late in the year, you can bet it came out of a 1968 model year. I also agree with the carb being 1968, but I always thought just the "8" indicated the year, not the "28".
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