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Group: Forum Members
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With production levels of 120,000 V8 trucks a year back then Ford would need 240,000 C1TE heads per year. It would take many sets of patterns to make that many castings. What you are seeing are pattern numbers so if a problem arose they would know where to look for the problem.
http://ford-y-block.com 20 miles east of San Diego, 20 miles north of Mexico 
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Group: Forum Members
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Run them! no worries here!
 God Bless.  Tim http://yblockguy.com/
350ci Y-Block FED "Elwood", 301ci Y-Block Unibody LSR "Jake", 312ci Y-Block '58 F-100, 338ci Y-Block powered Model A Tudor
tim@yblockguy.com Visalia, California Just west of the Sequoias
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Those are probably date codes. Should be no difference in the heads.
John - "The Hoosier Hurricane"
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Group: Forum Members
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I have a C1TE head. One is marked A10 and the other is A15. Is there a differance?
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