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Cam gear marks and firing order

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Cam gear marks and firing order

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Old

Nov 23, 2008 | 09:29 PM

#1

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Teching In

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Cam gear marks and firing order

It looks to me like when the marks on the cam timing gears are aimed at each other during a new chain install, cylinder number 1 is at TDC during valve overlap, whereas cylinder number 6 looks like it's at TDC on the firing stroke. I would have though it would be the other way around. Can anyone confirm? I don't wanna screw something up.
Thanks,
Ken

Old

Nov 23, 2008 | 10:38 PM

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Staging Lane

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When the marks are lined up it's firing on #6. This is true for all small and big block chevy.

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Nov 23, 2008 | 11:07 PM

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That's what it looked like to me, but it didn't make sense. Anyway, I'll go with it.
Thanks a lot.

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Nov 23, 2008 | 11:29 PM

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Why doesn't it make any sense?
When both dots are in the 12:00 position, the #1 is at TDC fire position..that's just the way it is.

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