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Thread: SBC 4 & 7 Firing Order Swap
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11-28-2005 #1
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- Sep 2004
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SBC 4 & 7 Firing Order Swap
Anyone have any experience with swapping the #4 and #7 firing order. I'm just wondering if there is any difference in power? I was looking at cams online today and didn't know they even did this. Anyhow, I thought maybe it helps the exhaust scavenging by trying to even out the exhaust pulses.
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12-01-2005 #2
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- Apr 2005
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supposed to make the engine run smoother.
pretty much a ploy by the cam companies to get people buy a new cam, same as conical valve springs.
12-13-2005 #3
Starting The Transformation
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- Nov 2005
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WEll unless you have tested both the conical valve springs and 4/7 swap on a engine dyno I hope you keep believing that.
If you really want to learn a lot about the 4/7 swap this is a good read
http://speedtalk.com/forum/viewtopic...light=cam+swap
If you want to learn about conical valve springs, I'm more than happy to educate anyone on them.
BretBauer Racing Engines
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