Unrivaled Customer Service
And Expert Tech Advice!  
Same Day Shipping Before 11 PM ET
My Cart
Shop By Vehicle
Shop By
Close Menu
Shop By Vehicle
Top Categories
All Categories

Top Categories

All Categories

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

ProMaxx Performance 440 MAXX Aluminum Cylinder Heads Big Block Chrysler (B/RB)

ProMaxx Performance 9243
Representative Image
Product images may differ from actual product appearance.


jegs shipping
FREE Shipping
Estimated to ship directly from the manufacturer on 07/30/18
Easy Returns
Easy Returns
Lowest Price Guarantee
Lowest Price Guarantee
ProMaxx Performance 440 MAXX Aluminum Cylinder Heads Big Block Chrysler (B/RB) $1,899.99
440 MAXX Aluminum Cylinder Heads
  • Big Block Chrysler (B/RB)
  • 240cc Intake Ports
  • 84cc Combustion Chambers
  • 2.19" Intake, 1.81" Exhaust Valves
  • .750" Lift Mechanical Roller Valve Springs
  • 100% CNC'd Ports and Chambers
  • Assembled, 2/pkg.

  • ProMaxx Performance 9243 Details

    240cc Intake Ports

    Additional Cylinder Head Specifications
  • Valve Angle: 15°
  • Valve Seal Material: Viton
  • Spark Plug Type: Angled
  • Retainer Material: Titanium
  • Maximum Spring Lift: .750" Mechanical Roller Lifter
  • Through Head Oiling System
  • Standard Port Locations
  • Bronze Valve Guides

  • Maxx Quality, Performance and Affordibility!

    The ProMaxx MAXX Series Big Block Chrysler Aluminum Cylinder Heads are taking affordable performance street and strip cylinder heads to the next level. The As-Cast heads utilize ultra-smooth A356-T6 aluminum castings, new runner and chamber designs to produce CNC ported type flow numbers! The 210cc intake runner design heads flow over 295cfm! This combined with a 5-angle competition valve job, diamond-honed bronze guides, hand bowl blending, and professional assembly to outperform the best brands in the business.

  • A356-T6 Aluminum Construction
  • Available As-Cast with 210cc Intake Ports or 100% CNC-Ported with 240cc Intake Ports
  • As-Cast Heads feature some hand bowl blending
  • Efficient chamber design
  • Available bare or assembled
  • 5-angle competition valve job
  • Diamond-honed bronze guides
  • "MAXX" power for street or strip
  • Sold in pairs

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