0
0
×
Account Login
1-800-345-4545
Gift Cards
Track Order
Help Center

ProMaxx Performance 320 Series Aluminum Cylinder Heads Big Block Chevy

723-2211


Product Q&A
View Now
Click image to zoom
320 Series Aluminum Cylinder Heads Big Block Chevy
$2,144.00
2 left in stock
320 Series Aluminum Cylinder Heads
  • Big Block Chevy
  • As-Cast
  • 320cc Intake Ports
  • 119cc Combustion Chamber
  • 2.30'' Intake / 1.88'' Exhaust Valves
  • 7/16'' Rocker Arm Studs
  • .600'' Max Lift
  • Steel Retainers
  • Assembled, 2/pkg
  • Free Shipping - Ships
    QTY

    Items You May Also Consider

    Do these heads fit a 2003 gen 7 vortec tall deck marine 496ci(8.1ltr)? Block cast.serial # 12558110 Man.tag# M364978

    Asked by: The Scalliwag
    The ProMaxx 723-2211 cylinder head does not fit an 8.1L engine.
    Answered by: jshook
    Date published: 2023-08-29

    What long tube headers will fit this style head. On a low budget. Thanks Bruce

    Asked by: Youster
    The ProMaxx 723-2211 cylinder head uses standard exhaust manifold or any header.
    Answered by: jshook
    Date published: 2023-02-06

    Will these heads work with Hydraulic flat tappet cam

    Asked by: Corvette 69 g
    The ProMaxx 723-2211 cylinder head does not work with a hydraulic flat tappet cam.
    Answered by: jshook
    Date published: 2022-11-15

    can these heads be used on a gen v block?

    Asked by: Randall1974
    These are compatible on a Gen V block.
    Answered by: Jon Jegs Tech
    Date published: 2018-06-27

    Lookin into buying these for my 454 bulid to use with a comp cam thumpr. could you advise me as to what cam (part #) to purchase as well as can i use this set up with stock push rods and rockers? If not please provide part numbers

    Asked by: spinner6332
    Would you please call us at 1-800-345-4545 with some more info and details so we can properly recommend a camshaft?
    Answered by: Tech Support
    Date published: 2023-01-21
    • y_2024, m_4, d_23, h_5CST
    • bvseo_bulk, prod_bvqa, vn_bulk_3.0.41
    • cp_1, bvpage1
    • co_hasquestionsanswers, tq_5
    • loc_en_US, sid_10001_10001_1088811, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_jegs

    Items You Need

    Easy Kits

    Related Products

    ComponentsFull CNC Ported Combustion ChambersFull CNC Ported Exhaust PortsFull CNC Ported Intake PortsCompetition 5-Angle Valve JobIntake Valve, 2.125 in.Exhaust Valve, 1.600 in.Dual Valve Spring: Solid roller, 1.550 in. OD , .800 in. maximum lift, max RPM 8000-8200, 250 lbs. on seatTitanium ...
    Close
    This head is an unassembled bare casting that has been machined with valve guides and valve seats installed. This head features a 70 cc combustion chamber and does NOT include rocker studs, valves, springs retainers, or locks.FeaturesHigh flowing intake port ...
    Close
    Flow Chart1175800 Features:For GM LS1/LS2/LS6 cathedral port applications245 cc intake ports70 cc exhaust ports13.5° valve angleIntake port flows 370 cfmExhaust port flows 235 cfm100-percent CNC ported A-356 aluminumBlended valve bowlsRequires 2.100 in. intake valvesRequires 1.600 in. exhaust valvesFlat Milling: ...
    Close

    Recently Viewed

    Some parts are not legal for use in California or other states with similar laws / regulations

    Motor Vehicles

    WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.

    Tools:

    WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.