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ProMaxx Performance 2211

320 Series Aluminum Cylinder Heads Big Block Chevy

ProMaxx Performance 2211

723-2211

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ProMaxx Performance 2211 320 Series Aluminum Cylinder Heads Big Block Chevy $1,440.99
320 Series Aluminum Cylinder Heads
  • Big Block Chevy
  • As-Cast
  • 320cc Intake Ports
  • 119cc Combustion Chamber
  • 2.25'' Intake / 1.88'' Exhaust Valves
  • 7/16'' Rocker Arm Studs
  • .600'' Max Lift
  • Steel Retainers
  • Assembled, 2/pkg

  • Specifications:

    Accessory Bolt Holes Drilled
    Yes
    CNC-Machined Combustion Chamber
    No
    CNC-Machined Exhaust Runner
    No
    CNC-Machined Intake Runner
    No
    Combustion Chamber Volume (cc)
    119
    Cylinder Head Finish
    Natural
    Cylinder Head Material
    Aluminum
    Cylinder Head Style
    Assembled
    Damper Spring Included
    No
    Exhaust Port Location
    Standard
    Exhaust Port Shape
    Round
    Exhaust Valve Diameter (in.)
    1.88
    Exhaust Valves Included
    Yes
    Guideplates Included
    Yes
    Heat Crossover
    No
    Intake Port Location
    Standard
    Intake Port Shape
    Rectangular
    Intake Runner Volume (cc)
    320
    Intake Valve Diameter (in.)
    2.25
    Intake Valves Included
    Yes
    Lock Style
    7 degree
    Locks Included
    Yes
    Machined for O-Ring
    No
    Maximum Valve Lift (in.)
    0.6
    Oiling Style
    Through pushrod
    Quantity
    Sold as a pair
    Retainer Material
    Steel
    Retainers Included
    Yes
    Rocker Arm Nut Thread Size (in.)
    7/16"-20
    Rocker Arm Nuts Included
    No
    Rocker Arm Studs Included
    Yes
    Rocker Arms Included
    No
    Steam Holes Drilled
    No
    Valve Cover Mounting Style
    Perimeter bolt
    Valve Guide Material
    Manganese bronze
    Valve Guides Included
    Yes
    Valve Seat Machine Style
    5-angle
    Valve Seat Material
    Ductile iron
    Valve Seats Machined
    Yes
    Valve Springs Included
    Yes
    Valve Stem Seals Included
    Yes
    Manufacturer's Part Number:
    2211

    ProMaxx heads have started a revolution in the performance world. They have custom designed a head to meet the demands of the Big Block Chevy world, while keeping the quality high and the price reasonable. These BB-Chevy heads come in an As-Cast series or Full CNC-Ported series. The As-Cast series features ''as-cast'' runners and combustion chambers with hand blended valve bowls. The Full CNC-series heads have professionally machined ports and combustion chambers that flow and perform as good as or better than some of the best cylinder heads in the industry. Basic components include U.S. made bronze valve guides, and ProMaxx 5-angle valve job. Assembled heads include 21-4N stainless valves, springs, retainers, 7/16'' rocker studs, guide plates, and viton seals (Bare heads do not include these items).

    Features:
  • A356-T6 Aluminum Castings
  • Efficient Chamber Design
  • 5-Angle Competition Valve Job
  • Diamond-Honed Bronze Guides
  • Available with As-Cast or Full CNC'd Ports and Chambers
  • Sold in Pairs, 2/pkg.

  • 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: 2017-08-11
    • y_2017, m_8, d_18, h_2CST
    • bvseo_bulk, prod_bvqa, vn_bulk_1.0.0-hotfix-1
    • cp_1, bvpage1
    • co_hasquestionsanswers, tq_1
    • loc_en_US, sid_10001_10001_1088811, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_jegs
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