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Firing order?

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Firing order?

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Dec 7, 2006 | 12:54 PM

#1

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Firing order?

I am looking to change a 99 SS OS to a 02 OS and while doing this I noticed that the firing orders between the 2 year models are different. Has anyone else noticed this and why would GM do this the 99 order is cylinders 31872654 and the 02 is 18726543?

I dont know which one to use.

Can someone tell me why?

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Dec 7, 2006 | 01:07 PM

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Both those are the same, look at it carefully

Does it matter that the 3 makes a difference? I wouldn't think so

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Dec 7, 2006 | 01:13 PM

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i guess for some reason they have cylinder 3 in the cell to fire 1st on the 99 file and cylinder 1 fire 1st on the 02.

I guess it doesnt matter which one is first in the cells as long as the order in which the cylinders are right

Thanks over looked that one

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Dec 7, 2006 | 01:15 PM

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On the first one, start at 1, and you will see that they are the same.

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