Shaun,
Excellent thought and a rightous one at that! If a 360 Cu in motor was a
360 cu in air pump, @ 5500 rpm it would "push" 1145 cfm. This isnt the case
for an engine, but with some massive assumptions you can make an argument
for 900-950 CFM air requirement @ Standard temp and pressure for a highly
modified engine. The maximum "air" is based on the ignition timing, cam
profile, compression ratio, head port configuration etc. and is not an easy
theoretical # to come up with. Hense the "experimental method". (the 380
HP crate motor (360 cu in) is dynoed with a 750cfm Holly carb or so I
think..)
BKB
-----Original Message-----
From: Shaun.Hendricks@bergenbrunswig.com
[mailto:Shaun.Hendricks@bergenbrunswig.com]
Sent: Wednesday, October 28, 1998 4:51 PM
To: dakota-truck@buffnet.net
Subject: DML: TBI's & CFM's
With all this talk of TBI's I suppose it would be wise to ask the
question,
"What is the absolute maximum air the engine can take in (normally
aspirated)
at maximum RPM's?" Wouldn't it be best to design any combinations of TBI's
to
support this level of air? Does it gain anything to have a larger TBI then
the engine could possibly use? Food for thought I guess...
Shaun H.
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