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    • Proform 850 CFM, Mechanical Secondary, Black & Purple 67303
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    Proform 850 CFM, Mechanical Secondary, Black & Purple 67303

    Vendor: Proform
    SKU: BCHW_67303
    Regular Price $768.95
    Free Shipping on Orders Over $99
    Professional, Enthusiast-Driven Customer Support
    International Shipping Available - Contact Us!
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    Based on the wildly popular original Race Series carburetors, PROFORM's Black Race Series Carburetors include a Black Diamond coating for enhanced fuel cooling. Each carburetor is hand assembled and tested in the U.S. utilizing the PROFORM High-Flow Carburetor Main Body, durable billet metering blocks, high performance billet throttle baseplate, and lightweight aluminum fuel bowls. PROFORM Black Race Series Carbs include: (1) Adjustable High-Flow Aluminum Main Body with Screw-In Air Bleeds, Maximum Air Flow: No Air Horn, Choke Tower, or Choke Control, Uses standard service and tuning components. (2) Billet Throttle Base Plates: Adjustable Secondary Air Flow Cam Bracket, Solid Billet Construction, Manufactured in the U.S.A., Timed and Full Vacuum Tubes for Accessories and Tuning, Button Torx Head Throttle Plate Screws, Power Valve Blow Out Protection, Progressive Slip Link Mechanical Secondary Linkage, Serviceable Throttle Levers, and Ford Kickdown. (3) Billet Metering Blocks: Solid Billet Construction, Durable, No Warping or Porosity Problems, Changeable Idle Feed Restriction, Manufactured in the U.S.A. (4) Aluminum Fuel Bowls: Lightweight Aluminum, Sight Glass Windows for easy float adjustment.


    Proform 850 CFM, Mechanical Secondary, Black & Purple 67303


    Specifications:

    Feature/Benefit Lightweight Aluminum Construction
    Ford Kickdown Bracket Included Yes
    Primary Power Valve (Hg) 4.5
    Idle/High Speed Air Bleed Sizes 70 / 35
    Needle & Seat 120
    Discharge Nozzle Size (Primary / Secondary) .033 in. / .033 in.
    Secondary Main Jet Size 87.5 / .099
    Height (IN) 3.25 inch
    Fuel Line Inlet Distance 9-11/16 inch
    Air Bleed Size (Inner High Speed) 35 / 35
    Primary Main Jet Size 78 / .084
    Part Type Carburetor
    Fuel Gasoline
    Air Bleed Size (Outer Idle) 70 / 70
    Base Plate Material Billet Aluminum
    Booster Style Down-Leg Boosters
    Series Black Race Series
    Secondaries Mechanical Secondaries
    Calibration Universal
    CFM 850 CFM
    Choke No Choke
    Metering Block Material Billet Aluminum
    Material Aluminum
    Main Body Material Lightweight Aluminum
    Throttle Linkage Universal
    Fuel Inlet Thread 7/8-in. x20
    Fuel Inlet Dual
    Flange Style Square Bore
    Finish Black Diamond Finish
    Emissions 49 State Legal
    EGR Without EGR
    Category Carbs
    Color Black Diamond Finish
    Number of Barrels 4
    Air Bleeds Included Yes
    Air Bleed Material Brass
    4708 No
    6444 1.75
    356 4
    835 0.25
    30 No
    574 No
    6443 1.875
    4234 Yes
    765 0.875
    3390 Performance
    353 Yes
    4265 Nitrophyl
    1968 4150 & 8090
    4235 Manual
    878 Yes
    621 Aluminum
    614 3.25
    1385 Black
    1428 5.25
    1427 5.25
    857 4
    6440 0.25
    6431 Yes
    6442 0.102
    6441 0.087
    1271 Yes
    8783 Square/4150
    9324 Mechanical
    Description_ABR Carburetor
    Description_SHO Carburetor - 850 CFM
    Description_INV Carb
    Description_INV Blk Race Series
    Description_INV 850 CFM
    Description_INV Mech Sec
    Description_DEF Carburetor
    Description_ASC Black Race Series Carburetor
    Description_ASC 850 CFM, Mechanical Secondary, Black & Purple
    Description_LAB PROFORM Black Race Series Carburetor, 850 CFM, Aluminum, Mechanical Secondary
    Description_DES Black Race Series Carburetor
    Description_DES 850 CFM, Mechanical Secondary, Black & Purple
    Description_EXT Engine Carburetor
    Description_EXT Black Race Series Model
    Description_EXT 850 CFM Dual Inlet 4-Barrel With Mechanical Secondaries
    Description_EXT Square Type Bore Mount
    Description_EXT Features Down-Leg Boosters and Black Diamond Finish
    Description_EXT No Choke
    Description_EXT Assembled With 100% New Components
    Description_EXT Sold Each
    Description_MKT Based on the wildly popular original Race Series carburetors, PROFORM's Black Race Series Carburetors include a Black Diamond coating for enhanced fuel cooling. Each carburetor is hand assembled and tested in the U.S. utilizing the PROFORM High-Flow Carburetor Main Body, durable billet metering blocks, high performance billet throttle baseplate, and lightweight aluminum fuel bowls. PROFORM Black Race Series Carbs include: (1) Adjustable High-Flow Aluminum Main Body with Screw-In Air Bleeds, Maximum Air Flow: No Air Horn, Choke Tower, or Choke Control, Uses standard service and tuning components. (2) Billet Throttle Base Plates: Adjustable Secondary Air Flow Cam Bracket, Solid Billet Construction, Manufactured in the U.S.A., Timed and Full Vacuum Tubes for Accessories and Tuning, Button Torx Head Throttle Plate Screws, Power Valve Blow Out Protection, Progressive Slip Link Mechanical Secondary Linkage, Serviceable Throttle Levers, and Ford Kickdown. (3) Billet Metering Blocks: Solid Billet Construction, Durable, No Warping or Porosity Problems, Changeable Idle Feed Restriction, Manufactured in the U.S.A. (4) Aluminum Fuel Bowls: Lightweight Aluminum, Sight Glass Windows for easy float adjustment.
    Description_FAB Lightweight Aluminum Construction


    Shipping Policy

    Cancellations

    Once an order is placed, in most cases it cannot be cancelled as they are sent for fulfillment almost immediately after receiving the order. If there is an ability to cancel the order, the buyer is responsible for the transaction fees charged from the transaction.

    Processing Time

    In-stock orders are typically processed and shipped within 1–2 business days of receiving payment, unless otherwise stated on the product page. Orders placed on weekends or holidays will be processed on the next business day.

    Shipping Costs

    Shipping costs are calculated based on the shipping method selected, the weight and dimensions of the package, and the destination address. You can view the shipping costs for your order during the checkout process before finalizing your purchase.

    Tracking Information

    Once your order has been shipped, you will receive a shipping confirmation email with tracking information. You can use this information to track the status of your package and monitor its delivery progress.

    Delivery Time

    While we make every effort to ensure timely delivery, please note that delivery times may vary due to factors beyond our control, such as weather conditions or carrier delays.

    International Shipping

    For international orders, please be aware that customs duties, taxes, and other fees may apply upon delivery. These additional charges are the responsibility of the recipient and are not included in the shipping cost paid at checkout. Please check with your local customs office for information on potential fees before placing your order.

    Shipping Address

    Please ensure that the shipping address provided during checkout is accurate and complete. We are not responsible for orders shipped to incorrect or undeliverable addresses due to customer error.

    Return Policy

    Return Period

    You have up to 30 days from the date of purchase to return eligible items.

    Condition of the Item

    A 20% restocking fee will apply to cover inspection, processing, and repackaging costs.

    Items must be returned in new, unused condition and include all original packaging, hardware, and documentation.

    Return Shipping

    The cost of return shipping is the responsibility of the buyer unless the item was received damaged, defective, or incorrect.

    Return Authorization

    Before returning any item, please contact our customer service team to obtain a Return Merchandise Authorization (RMA) number. Items returned without an RMA may not be accepted.

    Refund Processing

    Once the returned item is received and inspected, we will initiate the refund process. Please allow 2–5 days for the refund to be processed and credited to the original payment method. Bank processing times may vary.

    Damaged or Defective Items

    If you receive a damaged, defective, or incorrect item, contact us immediately for assistance. We’ll work quickly to resolve the issue or send a replacement.

    Final Sale Items

    Certain items may be marked as Final Sale and are not eligible for return or exchange. These will be clearly noted on the product page.

    Disclaimer

    All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

    By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.

    For any questions or concerns, please contact us — we’re always happy to help.

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