Holley Performance Products

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 Tech Service Library 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:

Holley Performance:
Local 270-781-9741 between 8 am and 6 pm CST Monday - Friday, and between 9 am and 3pm CST on Saturday.

Please allow up to 48 hours for an answer, and thank you for your business!

Tech Service Request Form

Product Information

Type [Required]	Part Number

Description [Required]	Purchase Date

Your Contact Information

Name [Required]	Email [Required]	Daytime Phone

Your Vehicle

Make [Required]	Model [Required]	Model Year [Required]

Intended Use	Type [Required]	DriveType [Required]

Vehicle Weight	Transmission Type	Tire Size

Your Engine

Engine Brand [Required]	Engine Size [Required]	RPM Range [Required]

Vacuum at Idle	Camshaft Type	Cam Specs at

Lobe Sep	Int Duration	Int Lift

Exh Duration	Exh Lift	Rocker Type

Rocker Ratio	Carb Type	Carb List Number

Fuel Injection Brand	Fuel Injection Type	Intake Manifold

Compression Ratio	Header Type	Header Tube Size

Cylinder Head Type	Supercharger Type	Supercharger Pulley Sizes

Turbocharger Type	PSI of Boost	NOS Type

NOS Shot	Estimate Horsepower	Converter Stall

Rear End Ratio	Desired level of performance

Your Question or Problem

Describe in detail your question or problem.

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