Chuck Nuytten Carburetor Specialty Services

Circle Racing

Carburetors

Chuck Nuytten has been doing carburetors for 30 years. His carburetors and fuel systems have carried drivers to countless numbers of wins and championships worldwide. This success is a result of Chuck’s attention to detail and quality. All carburetors start with new Holley cores. Each carburetor is then modified according to rule limits, type of fuel, and then set up for your motor combination. Chuck personally follows the steps of each carburetor and calibrates every one himself. This kind of personal attention guarantees that you will get the best performance.

Chuck Nuytten’s alcohol conversions have innumerable modifications to flow enough fuel through the carburetor. These modifications include larger needles and seats, larger passages, and extensive circuitry modifications for a proper fuel curve. This allows most of our alcohol circle racers to run block mount mechanical fuel pumps. This ultra simple fuel system makes more power than the complicated systems and costs considerably less.



350 CFM		GASOLINE

	3 5 0 - 1 0 0 2	350-1002 Model 2300-7448 NASCAR Legal Calibrated for gasoline 1002 labor	350-1003 Model 2300-7448 Added air flow work customized to fit your rules Calibrated for gasoline 1003 labor
	3 5 0 - 1 0 0 2



390 CFM		GASOLINE	ALCOHOL

	3 9 0 - 2 0 0 2 +	390-2002+ Model 4150HP Four corner idle Screw in air bleeds NASCAR Legal Modified linkage for quicker lap times Calibrated for gasoline 2002 labor	390-A2012 Model 4150HP Four corner idle Screw in air bleeds NASCAR Legal Modified linkage for quicker lap times Calibrated for alcohol A2012 labor
	3 9 0 - 2 0 0 2 +



500 CFM		GASOLINE	ALCOHOL

	5 0 0 - 1 0 0 2	500-1002 Model 2300-4412 1 ¹¹/₁₆" throttle bore diameter 1 ³/₈" venturi diameter Perfect for rules requiring stock Holly® two barrels Calibrated for gasoline 1002 labor	500-A1012 Model 2300-4412 1 ¹¹/₁₆" throttle bore diameter 1 ³/₈" venturi diameter Calibrated for alcohol A1012 labor
	5 0 0 - 1 0 0 2

	5 0 0 - A 1 0 1 3	500-1003 Model 2300-4412 1 ¹¹/₁₆" throttle bore diameter Flow work customized to fit your rules Calibrated for gasoline 1003 labor	500-A1013 Model 2300-4412 1 ¹¹/₁₆" throttle bore diameter Flow work customized to fit your rules Calibrated for alcohol A1013 labor
	5 0 0 - A 1 0 1 3



600 CFM		GASOLINE

	6 0 0 - 2 0 0 2	600-2002 Model 4150 One 30cc accelerator pump Two corner primary idle Calibrated for gasoline 2002 labor
	6 0 0 - 2 0 0 2



650 CFM		GASOLINE

	6 5 0 - 2 0 0 2	650-2002 Model 4150 Dual 30cc accelerator pumps Two or four corner idle Calibrated for gasoline 2002 labor	650-2003 Model 4150 Dual 30cc accelerator pumps Two or four corner idle Calibrated for alcohol 2003 labor
	6 5 0 - 2 0 0 2




750 CFM		GASOLINE	ALCOHOL

	7 5 0 - 2 0 0 2	750-2002 Model 4150 Dual 30cc accelerator pumps Four corner idle Stock appearance Calibrated for gasoline 2002 labor	750-A2012 Model 4150 Dual 50cc accelerator pumps Four corner idle Stock appearance Calibrated for alcohol A2012 labor



	7 5 0 - 2 0 0 3	750-2003 Model 4150 Dual 30cc accelerator pumps Four corner idle Added air flow Calibrated for gasoline 2003 labor	750-A2013 Model 4150 Dual 50cc accelerator pumps Four corner idle Added air flow Calibrated for alcohol A2013 labor
	7 5 0 - 2 0 0 3

	7 5 0 - A 2 0 1 3	750-2004 Model 4150 Dual 30cc accelerator pumps Four corner idle 1 ³/₄" throttle bore diameter Calibrated for gasoline 2004 labor	750-A2014 Model 4150 Dual 50cc accelerator pumps Four corner idle 1 ³/₄" throttle bore diameter Calibrated for alcohol A2014 labor
	7 5 0 - A 2 0 1 3



850 CFM		GASOLINE	ALCOHOL

	8 5 0 - 2 0 0 3	850-2003 Model 4150 One 30cc & one 50cc accelerator pumps Four corner idle Added air flow Calibrated for gasoline 2003 labor	850-A2013 Model 4150 Dual 50cc accelerator pumps Four corner idle Calibrated for alcohol A2013 labor




	291 North F.M. 549 P.O. Box 1028 Rockwall, Texas 75087 Phone: 972-722-8333 Fax: 972-722-8904	Contact Us: Sales Technical Questions Catalog Requests Webmaster