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Alan Roehrich · 04-26-2008, 07:58 PM

The 4/7 swap is legal, so is the 2/3-4/7. What you need to know is that if you change the firing order, you need to make sure your new firing order runs with your header/collector combination. If you have the wrong combination, it will hurt power.

04-26-2008, 07:58 PM	#5
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,139 Likes: 1,620 Liked 1,929 Times in 434 Posts	Re: 396/375 camshaft questions The 4/7 swap is legal, so is the 2/3-4/7. What you need to know is that if you change the firing order, you need to make sure your new firing order runs with your header/collector combination. If you have the wrong combination, it will hurt power. __________________ Alan Roehrich 212A G/S