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New C&S billet venturis will, size for size, outflow anything prepared by anybody. Period. The reasons this is true are venturi location, venturi shape, and less nozzle restriction.

Air entry is a the highest point on the carburetor, intaking "clean air," not "dirty air" that has bounced off three or four steps on the way to the venturi.

Latest fuel-signal technology allows designing venturis with steep parabolic curve, ideal air entry, and steep exit angles to reduce turbulence and maximize flow while fogging fuel to the lean side of the butterfly (throttle plate).

The C&S-designed venturi/nozzle system is continuous-path-CNC machined, then bright-anodize colored.

Fogging fuel to the lean side of the throttle blades results in dramatic increases in horsepower in the one-quarter- to three-quarters-open throttle positions. This is the most important working range on the racetrack, but it is usually not even tested in most dyno tests. "Throttle stop" test techniques (i.e., limiting throttle opening to 1/2, 3/4, 7/8, etc.) will show dramatic torque increases. This "off-the-corner" torque is a very important element of passing on a short track.

Air bleeds are located out of the air stream. On some conventional Holleys at high air flows, fuel would actually come out of the air bleeds. Every aerosol billet carburetor is 100% wet-flow tested to guarantee that all circuits are functioning correctly.

Aerosol billets are available in CFM ratings of 800, 900, 1000, 1100, 1200, 1400, and 1500 CFM, for gas or alcohol. Ratings are at standard 1-1/2 inches of mercury. Normally, 800, 900, and 1000 CFM are for circle tracks.

As always, we are available to consult on dyno test setups, carburetor selection, or other fuel-system issues, free of charge.

The final new feature of the C&S Aerosol Billet 4150 isn't on the carburetor itself, but is a way of doing business. We guarantee for 60 days from the date of shipment to replace, at our option, or repair, any products or parts thereof, which are found to be defective in materials or workmanship. This is pretty much the industry standard.

Only the new premium Aerosol Billet 4150 (and the Aerosol Billet Dominators) will feature a guarantee not available on other racing carburetors -- and a 30-day trial.

If you don'/t like it, we will buy it back. Period. You decide. Please call 636-723-4996 for details.

As C&S Specialties approaches its 38th year as a carburetor and fuel-system specialist, we feel this special Aerosol Billet warranty offers the serious racer an opportunity to try out the latest technology. NOTE: This guarantee does not apply to Custom Built Blow Thru applications.

We repeat our unique offer: "I believe we have a faster carburetor than you are now using... Would you like to try one with no obligation?"