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

723-9241


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440 MAXX Aluminum Cylinder Heads Big Block Chrysler (B/RB)
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$2,260.00
440 MAXX Aluminum Cylinder Heads
  • Big Block Chrysler (B/RB)
  • 240cc Intake Ports
  • 84cc Combustion Chambers
  • 2.19" Intake, 1.81" Exhaust Valves
  • .650" Lift Hyd. Flat Tappet Valve Springs
  • 100% CNC'd Ports and Chambers
  • Assembled, 2/pkg.
  • Free Shipping - Estimated to ship direct from manufacturer on 04/08/24 , pending manufacturer availability. Learn More
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    What are the flow numbers for the 210 cc port heads?

    Asked by: Jman
    ProMaxx shows the following info on the 723-9241: Flow Data @ 28″ water lift 200 300 400 500 600 700 Int 145 206 256 278 294 296 Ext 126 160 1189 206 219 226
    Answered by: jshook
    Date published: 2023-10-20

    What are the open and closed specs on the springs? Flow numbers? Promaxx's website didn't even show these.

    Asked by: Jude662
    Here is the flow data; Flow Data @ 28″ water lift 200 300 400 500 600 700 800 900 Int 157 224 275 305 318 323 327 330 Ext 108 152 184 208 227 239 247 253
    Answered by: Rusty B
    Date published: 2023-09-23
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