All speed shop guys 'divulge' that an AFB is inferior to a Holley. That
has not been my experience. An AFB does have to be properly tuned,
though, because it has more flexibility than a Holley. Tuning a Holley
is easier because there is less to tune. Holleys, as delivered, have a
power valve which results in more of a switch type of operation. The
Carter has better cruise and off idle performance for driving around
town. In a 1/4 mile setting, I'd probably go for a Holley, but for a
driver, I opt for a carter. There is a kit that used to be available
which adapted a weber metering assembly on a Holley. I know nothing
other than it used to be available. A Ford buddy swears that it is much
better off idle than a standard Holley, but I do not know.
Fuel injection is always, better, though ;-)
Keith
T. S. White wrote:
I thought I would toss in my experience on the carb and HTOB. I have a
289 in my TR3A. At the suggestion of a friend and a dyno tuner I
installed an Edlebroch AFB 600 CFM. I then had the engine dynotuned.
The result was entirely disappointing. The carbs only redeeming quality
was that it idled well. At a car show I spoke to a speed shop guy that
divuldged that the AFB has a generic fuel curve that doesn't fit any
engine well. I have since switched to a Holley Street Avenger with much
better performance characteristics.
I called Howe before installing my HTOB. The technitian there actually
recommended setting it up with a little slack.
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