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what is firing order on ls1 engine???

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Old Feb 6, 2007 | 07:01 PM
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Default what is firing order on ls1 engine???

title says it all
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Old Feb 6, 2007 | 07:10 PM
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I'm sure someone will chime in with a "definate" Mine is just a guess 'cause I've never heard of any Chevy V8 with anything but 18436572 for a firing order.
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Old Feb 6, 2007 | 08:15 PM
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1-8-7-2-6-5-4-3
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Old Feb 6, 2007 | 08:54 PM
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Originally Posted by old55
I'm sure someone will chime in with a "definate" Mine is just a guess 'cause I've never heard of any Chevy V8 with anything but 18436572 for a firing order.
Close, but that is the firing order of the pre-LSx small blocks, back to '55.
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Old Feb 6, 2007 | 10:58 PM
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Originally Posted by 2000C-5
Close, but that is the firing order of the pre-LSx small blocks, back to '55.
Thanks, Close doesn't "count" when we're talkin' firing order,Huh? :o
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Old Feb 7, 2007 | 12:00 AM
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Originally Posted by old55
Thanks, Close doesn't "count" when we're talkin' firing order,Huh? :o
Well...sort of, because in these days of no distributor, it doesn't really matter what the firing order is, you can't wire it wrong.
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Old Feb 7, 2007 | 12:06 AM
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Originally Posted by old55
Thanks, Close doesn't "count" when we're talkin' firing order,Huh? :o
That's OK. You haven't lived till you've seen that big flame shoot out the top of the carburetor. Wait, they don't have one of those either...

(From a guy who's screwed that one up, and much, much worse... )
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Old Feb 7, 2007 | 12:06 AM
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Again I'm just guessin' but I would imagine our ignition must be timed with a crank trigger or equivalent.
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Old Feb 7, 2007 | 12:22 AM
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Official: 1-8-7-2-6-5-4-3

In that order.

Now figure out which is the #1 cylinder.
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Old Feb 7, 2007 | 02:27 AM
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Now figure out which is the #1 cylinder.[/QUOTE]



Look at the engine, the head farthest forward is always number one whichever side.
The head is forward because one rod on the crank must be forward the thickness of the rod on the crank journal.

I think some old fords had the pass side forward and no. 1.

Norm
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