One of circle track racing’s most popular carburetors, this unit has been one of the most difficult for engine builders to master.  Typically, racers and engine builders have found this carburetor to be inconsistent which resulted in the fabled “dyno” carburetor that ran very well but was unavailable to the customer.

Motivated by this problem, VDL Fuel Systems went to work on producing 4412 carburetors that were repeatable in their performance.  In our search for this consistency, we discovered the weak links; which, when corrected, not only produced the consistent performance we were looking for but also produced superior power to anything previously available.

The next step was to take our new product to the racetrack where racers have historically had drivability issues.  The greatest performer on the dyno doesn’t mean a thing if it stumbles on the racetrack.  What we found was the obvious:  different applications require different set ups.  This is just one more reason why racing carburetors will never be bought successfully “out of the box”!

VDL Fuel Systems has done the job of producing the finest 4412 on the market.  Now the challenge is up to you.  Backed by our years of experience on the track and in the dyno room, we will provide you with the best carburetor you have ever purchased.  It’s a promise!

Optional – 1.750’’ throttle bore base plate (for rules that only check venturi size)
Bore venturi to 1.430’’ (for rules that only check base plate size)