To be sure. People with unlimited budgets and technical resources
usually can be the "who" to look to for performance results. Every set
of headers that I've seen out of the top NASCAR shops runs stepped
headers. To me, this negates all the talk and analysis. Quite simply, if
it wasn't advantageous, they wouldn't run it, or if there was anything
better, that's what they would be using.
A set of stainless steel ProFab's or Burns run the team about $2400. and
they are a thing of beauty. The "tuning" done by the engine shops
usually is limited to lengths' of tubing between or to the collectors
(especially on TriWyes. TriWyes also have matched sets of cylinders
different on each side of the sngine whereas a 4to1 set doesn't matter.
But, 4to1 sets do have firecones which I am told add 4 to 5 HP to most
any setup.
(Firecones are very skinny pyramids that extend from the center of where
the four header pipes meet out into the center of the collector, ending
in a very fine arrow like point.)
Grib
"Do what others Won't and you'll do what others Can't for the rest of
your life"
-----Original Message-----
From: owner-land-speed@autox.team.net
[mailto:owner-land-speed@autox.team.net] On Behalf Of John Beckett
Sent: Wednesday, March 10, 2004 6:32 AM
To: Ron Gibson; Albaugh, Neil; land-speed@autox.team.net
Subject: Re: Stepped Headers
Depending on the track NASCAR teams run steps, tri-Y's and merg
collectors
to go with it. Dont think I have seen any same tube size headers in a
long
time. Grib would know for sure.
JB
> Just out of curiosity, does anyone know if Nascar runs step headers?
They
> have the time and money to test all and run whatever is best.
>
> Ron Gibson, Omaha NE
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