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1938 LaSalle Production - GM Heritage Center

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Pistons are likewise<br />

graded into 30 dimensional<br />

sizes. These two<br />

recision steps afford a<br />

selective fitting of piston-to-bore<br />

within a<br />

maximum<br />

variation<br />

of .00007 inches<br />

about 1—40 the width<br />

of a human hair.<br />

Balancing the crankshaft<br />

to X6" ounce inch<br />

limit, after which crankshaft,<br />

clutch and flywheel<br />

will be balanced<br />

within a ounce inch<br />

limit.<br />

• 24 •

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