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Old 02-22-2006, 01:03 PM
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68 firebird 400 convertible

I have a 68 firebird with a YD code on the block. What is this engine and what year did it come out? Thanks! Cadillackid

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Old 02-23-2006, 09:30 PM
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http://firstgenfirebird.org/firebird...d_numbers.html no YD here, but
http://www.spottsperformance.com/engineid.htm '67 400 full size category.
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Old 02-25-2006, 10:17 AM
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1967 265 hp 400 ci
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