I posted this under the exhaust section, but didn't get a response.. Let me know what you think:

<a href="http://www.neons.org/faq/FAQ_LE.html#headers">http://www.neons.org/faq/FAQ_LE.html#headers</A>

See that? it says that you want LONG headers for HIGH rpm's.. I had been lead to believe quite the opposite..

My thoughts were that since the exhaust pulses were more frequent at higher rpm's, you want the collector CLOSER to the block to maximize the scavengine affect...

And that at low rpm's, since the pulses are further apart, the gasses have more time to travel way down the piping....so you want the collector FAR from the block for that...

Someone please clear this up for me..

Thanks,
Tesla


------------------
91 T/A 305
STB, Airfoil, Hooker cat-back, pseudo-cold air to K&N, Accel coil, !cat, !smog pump.
300 lb*ft of rice churning power.

 

Odd.. I also thought the same.. and I know I've read "short tubes=high rpm power" many times... that's why truck headers are so long. Right?

-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards