Technical Support

From classic restorations to modern modifications, the world-famous Holley Technical Service team has the answers you need. We provide support for all Holley customers with topics including compatibility, applications and suggestions.

Instruction Sheets
Find information about your Holley Brand Product in this easy to use search. Just type in your part number to download.
Resource Documents & Library
Browse our technical documentation and downloads for information like carburetor exploded views and list numbers, NOS nitrous oxide setups, and Holley EFI software and firmware.
Frequently Asked Questions
Be sure and visit our frequently asked questions section for quick answers on carburetor tuning, blower setup, fuel injection setup, intake manifold concerns, and NOS performance.
Product Registration
Fill out your Warranty Registration card online and save postage.
Carburetor Warranty
Lost or misplaced your warranty claim tag? Click above to print out a replacement warranty claim tag.
Holley Brand Warranties
Holley stands by the name of all of our performance brands.
Online Tech Help

If you have questions about our products, need a part recommendation, or just cant seem to find what you need you can contact our Tech Support online and receive answers by e-mail.
Requests may be submitted at any time but please allow up to 48 hours for responses. All questions are answered in the order in which they are received.

Holley Performance Products provides award-winning technical support via phone Monday through Friday from 8AM to 6PM CST, and Saturday from 9AM to 3PM CST @ 270 781-9741.