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Old 07-07-2015, 12:43 PM   #3
Mike C
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Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,740
Re: carburation system

Exactly which 3/4 race cam do you have...? This is an antiquated term back to the days of Flathead Fords and doesn't help answer your question.

The best thing you can do for fuel economy is lower engine RPM's either through an overdrive transmission or numerically lower rear gear ratio and/or taller tires. There is a big difference also in whether you are running a Performer and a 600 cfm carb or a Victor Jr and a 750 cfm carb.
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