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dmir55 · 01-15-2016, 12:18 AM

For what it is worth. In a Engine Masters issue about 3 or 4 months ago they did a dyno test for denting headers. I was amazed at how far they could close up the tube before a power loss. I would try to work around denting tubes but if needed it seems you can get away with it. Good luck.

01-15-2016, 12:18 AM	#2
dmir55 Junior Member Join Date: Jul 2014 Location: northern Minnesota Posts: 64 Likes: 0 Liked 0 Times in 0 Posts	Re: Fender wheel headers for 1966 Nova For what it is worth. In a Engine Masters issue about 3 or 4 months ago they did a dyno test for denting headers. I was amazed at how far they could close up the tube before a power loss. I would try to work around denting tubes but if needed it seems you can get away with it. Good luck.