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Headers: Long tubes or Shorties?

 
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Twilightoptics
Hardcore (12sec Club)


Joined: 13 Jan 2004
Posts: 9191
Location: Auburn , WA

1987 Chevrolet Camaro IROC-Z

PostPosted: Wed May 09, 2018 9:31 am    Post subject: Headers: Long tubes or Shorties? Reply with quote

I feel like this question applies to virtually every engine we could be playing with. 4-6-8 cyl, in the 6500/7000rpm redline area.

For the sake of argument the options both have the same size primary tubes. And fitment of either is a non-issue.

So which and why?

What if there is forced induction in the future?

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Dewey316
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Joined: 08 Jan 2004
Posts: 7285
Location: Bringing the tech

1990 Chevrolet Camaro RS

PostPosted: Thu Sep 27, 2018 10:30 am    Post subject: Reply with quote

Long tubes if properly tuned should win every time. The one thing that is assumed is the lengths have been tuned properly for the firing order, etc. You just aren't going to get the same pulse scavenging a shorty.

There is a reason that other than NHRA, almost every single top motorsport runs equal length long tube tuned headers. Even turbo drag cars at the high levels do. The only reason the nitro cars don't, is the are using the zoomy design to gain downforce because the pressure out of those pipes is high enough to push the car into the ground.
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