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Technical Request

Welcome to the Technical Services E-mail System. To provide you with the most accurate and timely answers to your technical questions, please fill out the technical information section below. Please fill out the form as completly as possible. This will allow the techs to properly answer your questions without any delay.

For any carburetor questions, you must provide the list number of the carb off the air horn or body. Instruction sheets for many products can be downloaded free, and the Support Section contains a wealth of information. Please keep in mind that some questions may better be answered over the phone. Please direct these to our Tech Service phone lines at:

Toll Free 1-866-464-6553 between 8am and 6PM CST Monday through Friday, and between 8am and 2pm CST on Saturday.

Additionally, head over to for new and updated technical information from Holley.

Please allow up to two business days for an answer, and thank you for your business!

Your Contact Information
First Name [Required]
Last Name [Required]
Email [Required]
Daytime Phone [Required]
Product Information
Type [Required]
Part Number
Description [Required]
Purchase Date
Your Vehicle
Model Year [Required]
Make [Required]
Model [Required]
Engine [Required]
Carb Type
Carb List Number
Fuel Injection Brand
Fuel Injection Type
Your Question or Problem
Describe in detail your question or problem. [Required]