| 31. | In some cases they were built with black painted valve covers instead of the normal silver valve covers.
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| 32. | For example, the cast aluminum valve cover featured 15 bolts, the industry's most, to achieve a positive seal.
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| 33. | The valve covers on the Magnum have 10 bolts rather than the previous 5, for improved oil sealing.
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| 34. | The knucklehead engine valve covers have contours resembling knuckles on a person's fist that give the knucklehead its name.
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| 35. | The original Porsche-designed valve covers.
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| 36. | The engine's red-trimmed valve covers and cylinder heads proclaim it to be a genuine Testarossa _ Italian for redhead.
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| 37. | This coupled with engine oil spray out of the valve cover breathers because of the pressure of the superchargers.
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| 38. | The Pontiac's single camshaft was supported by journals within the aluminum valve cover; no separate bearing shells were used.
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| 39. | In addition, the valve covers were made of thicker steel than earlier parts, and were installed with a silicone gasket.
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| 40. | The 4.3 L V6 and the 305 cu in V8 were updated with roller lifters and center bolt valve covers.
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