Back to Main Tech Support Page
Ask a Question
Technical Questions
Can't find an answer in our Help Center? Submit a question, and we'll get back to you soon.
Need Business/Order Related Support?
Search our Help Center
Get answers to business and order questions from our experienced Customer Service representatives.
Website Feedback
How are we doing? We really are interested in knowing how you feel about DX Engineering. Contact us with your comments - good, bad, great, so-so, or whatever. We want to hear from you!
New at Summit Racing: Holley Dominator SP Carburetors
When someone opens your hood and sees a Holley Dominator staring back at them, they know you’re not messing around. Holley now offers a more affordable Dominator perfect for high-horsepower street machines and bracket racing.
The Dominator Sportsman (SP) Carburetors are based on the Gen 3 Ultra Dominator aluminum main body. The main body is 5/16 inch taller than the previous model, allowing Holley engineers to use large-radius air entries that smooth out airflow into the carburetor. That improves throttle response and produces a more consistent air/fuel mixture.
Available in 1,050 and 1,150 cfm versions, the Dominator SP Carburetors have been dyno and track tested to perform on modern pump gasoline and race fuels.
Dominator SP Features
• All-aluminum construction saves 3.8 pounds over original models
• Fully CNC machined from venturi throat to throttle bore for predictable performance
• Billet metering blocks with replaceable power valve channel restrictors, intermediate restrictors, and idle feed restrictors
• Annular boosters deliver excellent signal and throttle response
• Screw-in air bleeds for precise tuning
• Dual 50cc accelerator pumps provide the perfect amount of fuel from idle to full throttle
* 4-corner idle allows you to precisely control your idle system
• Knurled primary and secondary curb idle screws—easy idle adjustment without tools
• Contoured hex head squirter screws for streamlined airflow
• Progressive secondary link installed for perfect off-the-line launches
• No linkage parts under the carburetor (1:1 wire link included)
• Clear sight windows on fuel bowls for easy fuel level adjustments
* Notched float and jet extensions
• 5/8-18 inch fuel inlet threads accept a large variety of fuel line plumbing options
• Throttle position sensor mounting points for use with data acquisition systems
• Extended air cleaner flange for easy air scoop attachment when used with scoop adapter
• Wet-flow tested to assure carburetor arrives ready to run
SEE HOLLEY’S DOMINATOR SP CARBURETORS AT SUMMIT RACING