Data from drag strip

[Bob Wooten]

I think that I would agree with Bruce.  with as good as the systems are
getting & the Mufflers now days I bet that any reasonable exhaust will
perform similarly compared to the rest of them.  I would bet that there is
<10 HP difference in exhausts given the same motor & header.

BW

-----Original Message-----
From: owner-gmecm at diy-efi.org [mailto:owner-gmecm at diy-efi.org]On Behalf
Of Bruce
Sent: Monday, May 28, 2001 6:22 PM
To: gmecm at diy-efi.org
Subject: Re: Data from drag strip



There are 11 sec GNs using a single 3".
Just a matter of what you wanna spend,  I think some folks get overly
carried away.  Muffler type has as much to so with it as anything.
Bruce


> Is there an ideal threshold for WOT exhaust backpressure which defines the
> point at which attempting to reduce EBP further would yield very few gains
> in a hot street car with a matching cam grind?  Has anyone ever seen a
> rule of thumb correlation between EBP and lost HP?
> Walt.

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