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Casting #CIDYearID CodeCC'sNotes

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38510133064'1Used ROCKER SHAFTS rather than pairs on PEDESTALS.

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33065'2All V-8s now using PEDESTALS.

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38939433066'360

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39449733067'460

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39774235068'-69'564Excellent candidate for use today with stock or replacement dished pistons. Good flowing, and high compression. Do not use with flat top replacement pistons.

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40385935070'664W-31's had larger 2.000 intakes. '69 W-31's?

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40914735071'764W-31's had larger 2.000 valves.

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40914735072'7A64The 'A' is a subscript, like " tall, to lower right of the '7', like 7A.

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41192935073'-76'879Have huge bb-sized 79cc chambers A perfect pump gas street head if the stock dished pistons are swapped for flattops Do not use with stock pistons this will yielding poor compression ratios without machining.

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55036226076'-77'1057

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55471526076'-81'2AEasy way to ID a 260 engine.

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55471635077'-80'3A751/2" bolt holes.

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55471740377'-79'4A83Matches the 4A or 4B block. Easy way to ID a 403. 1/2" bolt holes.

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331730780'-85'5A64

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584430785'-6A67Non-ECM Canadian cars

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014230785'-90'7A67'This 'A', and the others from 2A to 6A, is a large capital letter equal in size to, and immediately adjacent to the 7, like | 7A.

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3948350D3ADiesel.

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16475014.095'-Left Hand, All aluminum, with 4.0 appearing near the top edge of the head.

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16475044.095'-Right Hand, All aluminum, with 4.0 appearing near the top edge of the head.