air box

[mustube]

I just recently bought a Holley carburetor book as to help me better understand how it works and how to tune it to max efficiency and the one paged about forced induction says that a box around the carb completely eliminates the need for any modification to the carb if one were to install a turbo/supercharger for blowthrough applications and was wondering if this is true or if one would still need to make some slight modifications

 

[Anonymous]

a Holley carburetor book says that a box around the carb completely eliminates the need for any modification to the carb

100% false. It will still run lean when on boost.

here is a great write up for how to build a Holley carb for boost:
http://www.hangar18fabrication.com/blowthru.html

 

[XFlow_Fairlane]

floats will also crush.

also you have to seal the entrance for the throttle shaft/cable which can be a bigger issue. the box needs to hold up for 20PSI or so withouth leaking. to change jets you would have to take the box apart.