Quote:
Originally Posted by FBODS4EVER
on holley's site. and i called. Quote from holley "
QUESTION: How do I know if a vacuum or mechanical carburetor is best for me?
ANSWER For street cars the vacuum secondary carburetor works best on midweight or heavyweight cars with an automatic transmission. They are more forgiving than a Double Pumper is because they work by sensing engine load. The mechanical secondary carburetor is best on a lighter car with radical camshaft and a lower gear and manual transmission or on a car that is going to be used for racing purposes.
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techically that doesnt say vacuum isnt for manual trans cars. It says for lightweight manual trans race cars, mechanical is better.