The Flow Control System utilizes a newly designed base in combination with a unique lid designed to reduce intake turbulence. The resulting smooth, laminar flow enhances cylinder filling, horsepower, and torque. The filter element is the world famous K&N Filtercharger for the ultimate in airflow and filtration.
2-Barrel Holley with and without choke towerCircle Track Magazine discovered this model and featured it in one of their issues. That started the racers calling. Fits the very popular 4412 Holley 2-barrel by removing the choke assembly and leaving the choke tower untouched. Gigantic increase in air flow and lots of horsepower. The small block with about 340-360hp can expect up to a 15-17hp increase. In the 400-420hp range the range increase climbs up to 20-22hp. If your engine builder tells you that is impossible, just take one to him and run it on the dyno. Two sizes available and all the air you ll ever need.
2-Barrel RochesterThe choice of quite a few racing associations. This carburetor is used in an attempt to equalize competition. If you have to use this carburetor, you must use this air cleaner. It may be the most trick piece we have. Clears the HEI distributor on the cast iron manifold. Only one size offered because only one size works.
4-Barrel Holley DominatorThe newest addition to the K&N Flow Control Air Cleaner line is specifically designed for all Holley Dominator carburetors, including Holley s newest HP Series. This Flow Control Assembly takes full advantage of the 360 air delivery system by using K&N s 4-1/2" Filtercharger. Using this assembly can produce a whopping 1200 cfm which will be more than enough air for any motorsports application! When it s time to dominate the competition, this is the Flow Control for you!
4-Barrel Holley with and without choke towerThe inspiration for this particular air cleaner was the 390 cfm Holley. Many tracks and racing organizations use this carburetor as a restrictor. Flows plenty on the 390 and you can pass it all the way up to the mighty 850 and it keeps on making horsepower. Available in two sizes and complete with all parts necessary.