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LS1 Firing Order

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Old Dec 3, 2006 | 09:12 AM
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Default LS1 Firing Order
What is the firing order for the LS1?

Thanks,

Daren
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Old Dec 3, 2006 | 09:54 AM
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here it is:18436572
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Old Dec 3, 2006 | 10:12 AM
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I thought it was on the intake.
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Old Dec 3, 2006 | 10:55 AM
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1-8-7-2-6-5-4-3.
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Old Dec 3, 2006 | 10:59 AM
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Dont you hate when you get two conflicting numbers?
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Old Dec 3, 2006 | 11:03 AM
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1-8-7-2-6-5-4-3
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Old Dec 3, 2006 | 11:04 AM
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Originally Posted by miamifan3413
here it is:18436572
That's Smallblock Chevrolet, but not LS1.
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Old Dec 3, 2006 | 11:43 AM
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Originally Posted by Armageddon
That's Smallblock Chevrolet, but not LS1.
i concur
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Old Dec 3, 2006 | 12:00 PM
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Thanks to all who replied.
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Old Dec 3, 2006 | 09:19 PM
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Originally Posted by Armageddon
That's Smallblock Chevrolet, but not LS1.
Dude....my bad, I totally wasn't thinkin
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Old Dec 3, 2006 | 09:23 PM
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Originally Posted by miamifan3413
Dude....my bad, I totally wasn't thinkin

Go sit in a corner for 5 minutes and think about what you've done.
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Old Dec 3, 2006 | 09:31 PM
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98/99-54318726
2000,01,02- 43187265
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Old Dec 3, 2006 | 10:38 PM
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Originally Posted by jay_99z
Go sit in a corner for 5 minutes and think about what you've done.
Yes, sir....I deserve a BIG
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Old Dec 3, 2006 | 10:41 PM
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Originally Posted by firebirdls1us
98/99-54318726
2000,01,02- 43187265
are you drunk?
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Old Dec 4, 2006 | 12:03 AM
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On a slightly different subject (slight thread hijack) does anyone know the firing order of the ford 5.0s in the fox bodies, because a lot of the LS1 rx7 guys are using ford 5.0 bbk Long tube headers with their LS1s cause they fit but I know the firing order has an impact on the shape of the collector so I am wondering if the 5.0 and the LS1 have the same firing order

Thanks
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Old Dec 4, 2006 | 12:41 AM
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its printed on the side of your intake manifold, Id just get it from there since its so many conflicting numbers in this thread.
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Old Dec 4, 2006 | 04:34 AM
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Originally Posted by firebirdls1us
98/99-54318726
2000,01,02- 43187265

those are really the same firing order
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Old Dec 4, 2006 | 10:05 AM
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Originally Posted by DONAIMIAN
its printed on the side of your intake manifold, Id just get it from there since its so many conflicting numbers in this thread.
There aren't a bunch of conflicting numbers. The first one posted was SBC (miamifan is now sorry for that, lol!). The other numbers are all the same. It doesn't matter which number you start with.....the order is still the same.
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Old Dec 4, 2006 | 10:18 AM
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The correct firing order for ALL LS1's is 1-8-7-2-6-5-4-3. This firing order originated back in 1954 by Cadillac. During the 80's Detroit desiel went to this firing order for their V8's becuase they were have harmonic problem's and breaking crankshafts. Most of your Top Fuel dragster teams and Funny Car team's have went to this firing order as well due to power robbing harmonic's at higher rpm.
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Old Dec 4, 2006 | 10:21 AM
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1 8 4 3 6 5 7 2 is the gen I SBC.....

the LS1 has the 7-4 swap from the factory, so its order is:

1 8 7 3 6 5 4 2


the numbers are labled just like the SBC in that the front drivers side is 1. front passenger side is 2. second from front drivers side is 3.second from front passenger side is 4. ect....
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