Thread: 454 Valve Steam Seals: Umbrella or Positive?
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Old 02-03-2012, 06:36 PM   #1
savatreatabvr
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454 Valve Steam Seals: Umbrella or Positive?
Anyone know what kind of valve steam seals are in a mid 70's 454, umbrella or positive type?

UMBRELLA


POSITIVE TYPE
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