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Old 05-10-2010, 09:47 PM
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Tom Vaught Tom Vaught is offline
Boost Engineer
 
Join Date: Dec 2001
Location: The United States of America
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I would not use any Holley "Spread Bore" style carb for blow-thru.

The idle and part throttle circuits are screwed up for boosting. Mixture Screws add air, not air/fuel mixture.

Holley did make a Square Bore Carb List # 6709 with a small primary venturi and a large secondary venturi. For those that aren't familiar with this carb, it combines primaries from a 600 with secondaries from the 850 in a regular square flange dp body.

Tom Vaught

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