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Old 07-02-2010, 03:00 PM   #18
Blade


 
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Drives: 2016 Camaro 2SS BVM
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Quote:
Originally Posted by ROD1 View Post
Why are ARH headers primaries contoured rather than straight like others? "By making them the same length, it guarantees that each cylinder's exhaust gases arrive in the collector spaced out equally so there is no back pressure generated by the cylinders sharing the collector." Also somewhere I read that the more gradual the merge in the collector, the less backpressure as well but dont quote that.
I have read that too.
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