vaccum secondaries -vs- mechanical... throttle response

BelueLX

Founding Member
Jul 10, 1999
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vacuum secondaries -vs- mechanical... throttle response

Ive heard to get a carb with mechanical secondaries for throttle response / drag racing. I found a good deal on one with vacuum secondaries. How much will the vacuum secondaries hurt me off the line and at the strip? Havent really dealt with carbs much Ive always had efi. Thanks,

Cody B
 
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Vaccum secondaries are much more forgiving if you put a too large carb on, and they can be made to open the secondaries at what ever vaccum you wish. If the car is street driven, and not a standard trans, or 3,000 or above stall, you are better off with the vac carb.