In what way does wrapping headers help besides keeping heat out of the engine bay?

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1983 Camaro Z28
Goodwrench 350ci V8, Edelbrock TES Headers, Flowmaster Catback, MSD 6al and Blaster 2 coil, Edelbrock Performer intake, Edelbrock Performer 600cfm carb. T5, 373 rear, Eibach springs, Cervin Vega speakers, Rock. Fos. Sub, Pioneer CD,
email-chris4421@hotmail.com
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"I used to be a Mustang Guy! I didn't know the power of the dark side!!"

 

I cant seem to spell either

 

It's not so much that it lowers temperature on the outside of the wrapped part(which is a side benefit) as much as it keeps heat inside. Since heat and velocity are directly related, maintaining the heat of the exhaust gases, maintains thier velocity. Thus the escaping gases move away from the exhaust port quicker and create a greater scavenging effect. Scavenging is very important because it draws exhaust gases from the cylinder, which in turn draws in the intake charge. The more efficiently you scavenge during the exhaust stroke the more room you create for a fresh intake charge and the faster that charge is drawn into the cylinder.

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He who hesitates,... is lost!

 

Wow, what a reply. Thanks man, you learn something every day!

That is very interesting because I am an mechanical engineering majior and have never heard that. Thanks!

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1983 Camaro Z28
Goodwrench 350ci V8, Edelbrock TES Headers, Flowmaster Catback, MSD 6al and Blaster 2 coil, Edelbrock Performer intake, Edelbrock Performer 600cfm carb. T5, 373 rear, Eibach springs, Cervin Vega speakers, Rock. Fos. Sub, Pioneer CD,
email-chris4421@hotmail.com
-------------------------
"I used to be a Mustang Guy! I didn't know the power of the dark side!!"