• 11745-ANG_2000x2000.jpg
  • 11745-TOP_2000x2000.jpg
  • 11745-BOT_2000x2000.jpg
  • 11745-FRO_2000x2000.jpg
  • 11745-OTH_2000x2000.jpg
    • 11745-ANG_2000x2000.jpg
    • 11745-TOP_2000x2000.jpg
    • 11745-BOT_2000x2000.jpg
    • 11745-FRO_2000x2000.jpg
    • 11745-OTH_2000x2000.jpg
    Sale!

    Manley Manley Valve - Exhaust, Valve-BBC E/D 1.880, +.100 12737-8

    Vendor: Manley
    Part Number: 12737-8
    Save $171.36
    $514.08 $685.44

    Available to order. In-stock orders typically ship in 1 to 2 business days.

    Not sure it fits your vehicle?
    Email sales@berryperformancesales.com with your year, make, model and engine, and we'll help you check fitment before you order.
    Fast Fulfillment: In-stock orders typically ship within 1 to 2 business days.
    Free Shipping on Orders Over $99 | Excludes freight shipments
    International Shipping Available: email sales@berryperformancesales.com for a quote.
    Payment & Security

    Secure, encrypted checkout. Card details go straight to the payment processor and are never stored by us.

    • Amazon
    • American Express
    • Apple Pay
    • Diners Club
    • Discover
    • Google Pay
    • Mastercard
    • PayPal
    • Shop Pay
    • Venmo
    • Visa
    Share to:
    View Full Details
    Product DetailsFAQReviewsRelated Products
    Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted carburetor circle track competitors, these valves are your ticket to unparalleled performance.


    Manley Manley Valve - Exhaust, Valve-BBC E/D 1.880, +.100 12737-8


    Specifications:

    Prop 65 (C, R or CR) CR
    Prop 65 - Short Label Prop 65 Warning Label.JPG
    Engine Type ICE
    Make Chevrolet
    Engine Big Block
    Product Market Domestic
    Head Diameter 1.880
    Valve Head Diameter 1.880
    Stem Diameter 0.3415
    Valve Stem Diameter 0.3415
    O/A Length 5.522
    Valve Length 5.522
    Valve Tip Length 0.250
    Tip Length 0.250
    Margin Width 0.075
    Seat Width 0.085
    Top of Head 12 Degree Dish
    Valve Head Shape 12 Degree Dish
    Underhead Angle 18.00
    Underhead Radius 1/2
    Valve Series Extreme Duty Series
    Valve Material Inconel
    Valve Type Exhaust
    Product Type Engine Exhaust Valve Kit
    Valve Quantity 8
    Engine Valve Quantity 8
    Industry Automotive
    Out of Stock Message Call for Availability
    Title Manley Valve - Exhaust, Valve-BBC E/D 1.880, +.100
    Prop 65 Yes/No Yes
    Description_SHO Valve - Exhaust
    Description_INV Valve-BBC E/D 1.880, +.100
    Description_ASC Manley Valve - Exhaust, Valve-BBC E/D 1.880, +.100
    Description_LAB Extr. Dty BBC Ex. Vlv Kit - 1.880 in. Head Dia.,5.522 in. O/A ,.3415 in. Stem
    Description_DES Manley Valve - Exhaust, Valve-BBC E/D 1.880, +.100
    Description_EXT Manley Valve - Exhaust, Valve-BBC E/D 1.880, +100
    Description_MKT Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted carburetor circle track competitors, these valves are your ticket to unparalleled performance.
    Description_FAB Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.
    Description_FAB XH-432 XtremeAlloy: The hallmark of excellence in exhaust valve material construction.
    Description_FAB Built to Last: Featuring chrome stems and hard tips for exceptional longevity and wear resistance.
    Description_FAB Optimized Performance: Swirl polished under head areas and fully machined combustion faces improve airflow and combustion efficiency.
    Description_TLE Manley Extreme Duty Series Chevrolet Big Block Exhaust Valve Kit - 1.880 in. Head Dia., 5.522 in. O/A , 0.3415 in. Stem
    Description_DEF Engine Exhaust Valve


    Shipping Policy
    • Free shipping on orders over $99 (excludes freight shipments).
    • In-stock orders typically ship within 1 to 2 business days. Weekend and holiday orders are processed the next business day.
    • Orders ship from Defiance, Ohio and a nationwide network of warehouses and manufacturers.
    • Items showing an ETA are not in stock yet. ETAs come from the manufacturer and can change.
    • No P.O. Boxes. International orders need a shipping quote, so email us first.

    Read the full Shipping Policy
    Return Policy
    • 30-day return window from the ship date. Returns must be approved first; email sales@berryperformancesales.com with your order number.
    • Items must be unused, complete and in the original packaging.
    • A 20% restocking fee applies, and return shipping is paid by the buyer.
    • Not returnable: installed or modified parts, opened or used programmers and tuners, custom orders, Open Box, and Clearance or Final Sale items.
    • Damaged, defective or incorrect items must be reported within 48 hours of delivery with photos.

    Read the full Return Policy
    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.

    Related Products

    Recently Viewed