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Old 08-07-2015, 12:43 PM   #6
James L Miller
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Default Re: Tuning with tri-y headers

Quote:
Originally Posted by REGGIE WINKLES View Post
4-7 swap cams will not work with Tri-y's.
I would think that would depend on the cylinder pairing. In the old days I think Tr-Ys were developed to get away from the 5-7 firing order so they would pair 1&5 and 3&7 together or something like that. I'm not familiar with the new Tr-Y headers. How do they pair them now?
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