date casting code question.
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From: Sioux Falls South Dakota
date casting code question.
date casting code on this 454 motor reads A28-71. My guess is Jan. 28 71 but everthing I have read only has one number for the year. What am I missing. thanks for any help. gary
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Is this true of later big blocks? This article says a two digit year indicates the block came from the Tonawanda plant. I'm pretty sure the 454's were built there. Was it Flint that was one digit, small block?
http://www.corvetteblogger.com/2007/...engine-stamps/
http://www.corvetteblogger.com/2007/...engine-stamps/
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From: Sioux Falls South Dakota
That would make sense. The front pad # is T 0215 cpj . The other block casting # is 3963512. If I have all of this right it should be a 1971-454 with 365 or 425 hp. I will have to see if it`s two or four bolt mains. Is this all correct for the # I have posted? Thanks for the input. Gary
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yes, 69 and earlier were 1 digit years and 70 is a 2 digit year.. at least in the seventies..
the cpj code is for a 365 HP automatic, and is therefor a 2 bolt main engine, oval port heads. iron intake rochester quadrajet
amd yes A28 is january 28
the cpj code is for a 365 HP automatic, and is therefor a 2 bolt main engine, oval port heads. iron intake rochester quadrajet
amd yes A28 is january 28
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No, it's correct- if the subject is small block engines. Flint supplied 99.9% the small block engine cases for Corvette. One simple way of telling the difference between a Tonawanda small block and Flint small block is a single digit or double digit for the year in a casting date. Then there's McKinnon Industry cases but that's another kettle of fish.
