800.345.4545
Unrivaled Customer Service
And Expert Tech Advice!  
FREE SHIPPING!
Same Day Shipping Before 11 PM ET
0
My Cart
0
$0.00
Shop By Vehicle
Shop By
Category
Close Menu
Shop By Vehicle
Top Categories
All Categories

Top Categories

All Categories


Free Catalog
E-Mail Signup
My Account
Track Order
Gift Certificates
Rebates
Help

ProMaxx Performance 370 Series Aluminum Cylinder Heads Big Block Chevy

ProMaxx Performance 9372
Representative Image
Product images may differ from actual product appearance.

723-9372

jegs shipping
FREE Shipping
Estimated to ship directly from the manufacturer on 10/08/18
Easy Returns
Easy Returns
Lowest Price Guarantee
Lowest Price Guarantee
ProMaxx Performance 370 Series Aluminum Cylinder Heads Big Block Chevy $2,520.99
370 Series Aluminum Cylinder Heads
  • Big Block Chevy
  • 100% CNC-Ported
  • 370cc Intake Ports
  • 121cc Combustion Chamber
  • 2.35'' Intake / 1.88'' Exhaust Valves
  • 7/16'' Rocker Arm Studs
  • .700'' Max Lift
  • Steel Retainers
  • Assembled, 2/pkg

  • 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.

     JEGS Easy Kits are designed by JEGS high performance racing professionals to help you get all the performance parts you need for your race car, hot rod or truck.

    Items You Need
    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.