Converter Service Request — Circle D Specialties

Contact Information

First Name Last Name

Email Address Phone Number

This is a business order — ship and bill to a company

Return Shipping Address

The address where your converter will be returned after service is complete.

Country Street Address

Apartment / Suite / Unit (optional)

City State ZIP Code

Billing Address

Same as Return Shipping Address

Converter Information

Tell us about the converter you are sending in, exactly as it is today — not the build you would like back. There is room to describe what you want further down.

Circle D Order # (optional) e.g. S12345 (if you have it) Purchase Date (OPTIONAL)

Model / Series

Part Number Serial Number A-XXXXX OR CDS-XXXXX

Reason for Service

Service Type

Stall Change and Upgrade selections will request build specifications below.

Warranty Concern will request symptom and timing details.

Describe Your Request in Detail PO Number (optional)

Build Specifications

Required for Stall Change and Upgrade requests.

Original Rated Stall Speed Current Stall Speed

Target Stall Speed Vehicle (Year / Make / Model)

Engine (note year if swap) Estimated Horsepower (Flywheel)

Transmission Flexplate (SFI rating & part #)

Power Adders Camshaft Specs (Duration / Lift / LSA)

Tire Size Rear Gear Ratio

Warranty Details

Primary Concern When Did It Start?

Photos (Optional)

Up to 8 images. JPEG, PNG, HEIC, or WebP — we shrink them for you, so photos straight off a phone are fine.

Datalog (Optional)

Up to about 4 MB. HP Tuners, EFI Live, Holley, Cobb, SCT, DiabloSport, or similar. Executable file types are not accepted. Got a bigger datalog? Submit without it and reply to your confirmation email with the file attached.