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The casting number on my 250 is G0 2 K78.
The block number is 473483.
The K78 tells me that the block was cast November 7th, and the "8" tells me the last digit of the year. From this I know that it was cast in 1968 or 1978. Is there anyway I can narrow down the decade?
I can't seem to find any information that is helpful.
Thanks, Al
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Joined: Apr 2004
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Can you get the stamped # from by the dist Pad? You may have to scrape some paint.
Inliner Member 1716 65 Chevelle Wagon and 41 Hudson Pickup Information and parts www.12bolt.com
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# from dist pad is F1114TAL.
Thanks, Al
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Tom; I've been cruising the net and think I've answered my own question. The last 3 letters on the dist pad is the application code. In 1970 they changed this code from a 2 digit number to a 3 digit number. Therefore my engine must be newer than 1968 and therefore it must be a 1978. They didn't make a 250 in'88 did they? I got the info from this web site; http://www.camaros.org/drivetrain.shtmlthanks, Al
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Al, Here is another website that I have found usefull. http://no25.chuckthetruck.com/index.html It does list the engine codes. Tom
Inliner Member 1716 65 Chevelle Wagon and 41 Hudson Pickup Information and parts www.12bolt.com
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I seem to recall that GM didn't start stamping #s on the dizzy pad until after '68-but maybe that was just on trucks-so if it has those #s there, it may indicate later than '68
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My Chilton manual (for camaros) shows engine #s only til 1975 for 250s
68 Camaro 250 Clifford intake headers Holly 700r4 3:08 Cruiser I.I.3241
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They have been stamping these # near the dist since atleast 1965 maybe earlier. The # designates the trans option, HP and model of car. Even the build Month and date. Tom
Inliner Member 1716 65 Chevelle Wagon and 41 Hudson Pickup Information and parts www.12bolt.com
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By the numbers it looks like my 250 was built in Flint in November 1978 and came out of a truck with auto trans.
Thanks to all for your help.
Al
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I seem to recall that GM didn't start stamping #s on the dizzy pad until after '68-but maybe that was just on trucks-so if it has those #s there, it may indicate later than '68 Both my 68 292 and 63 292 have the codes stamped on the distributor pad.
Inliner #1916
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The difference is that the last 2 letters on your code indicates the application code. From 1970 onward the application code is the last 3 letters. Mine is "TAL". The "T" says the engine came from a truck. If there was a "C" instead of a "T" it would mean that the engine came from a car. The last 2 letters indicate model info such as auto trans.
Al
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