Dart Pro 1 20° Big Block Chevy 440cc Aluminum Heads

Dart Pro 1 20° Big Block Chevy 440cc aluminum Heads

$4240.00

Dart Pro 1 fully CNC ported 440cc 20° aluminum racing heads are some of the best out of the box heads produced by Dart. Choose what ever upgrade you may want and your done. Our heads use only Dart valves, Dart Triple .900″ lift House Springs, 10° Locks and Titanium Retainers, .

 

Components

  • Dart Pro 1 20° 440cc Aluminum Heads with 50° Intake
  • Dart Intake 50° and 55° Exhaust Valve Seat Angles
  • 440cc Intake Ports with a 2.4 Valve Flow 467 cfm @ 1.0″ Lift
  • 156cc Exhaust Ports with a 1.8 Valve Flow 332 cfm @ 1.0″ Lift
  • Copper Impregnated Powdered Metal
  • Dart Mag-Bronze ½” OD Fully Machined Valve Guides .530″ Seal
  • Utilizes Existing BBC Intake Manifolds with Spacer End Rail Kit
  • Uses Standard BBC Header Pattern but Raised .600″ Raised
  • Uses Jesel or T&D Shaft Rocker System
  • Stock Hardware Bolts Directly to the Cylinder Heads
  • Increased Deck Thickness to Support Power Adders
  • Uses 1″ Longer Head Bolts Over the Exhaust
  • Machined to 97cc CNC Ported Combustion Chambers
  • Intake, Exhaust and Combustion Chambers are as Cast
  • Dart 2.4 Stainless Steel Intake Valves
  • Dart 1.8 Stainless Steel Exhaust Valves
  • All Valve Seats Hand Lapped to Insure the Perfect Seal and Valve Job
  • Dart Triple House Springs for a .900″ Lift Cam
  • Dart House +.100 Titanium 10° Retainers
  • Comp Cams 611-16 10° Machined Super Locks
  • U.S. PC Valve Stem Seals Installed (we never leave these off)
  • Dart Hardened Spring Seats or Washers
  • Hot Washed Blown Dry, Lubed and Final Spring Set to Specifications
  • Professionally Assembled, Packaged and Sealed

Available Upgrades

Flat Milling for 1 cc lost is every .005″ material removed off the deck surface to get 92cc Combustion Chambers would be .025″ Removed
+ $ 100.00
Manley 2.4 Intake and 1.8 Severe Duty Intake and Exhaust Valves; Bolt Sets
+ $ 370.00
Manley Extreme Duty and Marine Enconel Exhaust Valves
+ $ 395.00
Titanium Intake Valves
+ $ 790.00
Titanium Exhaust Valves
+ $ 790.00
Pro Series Dart Specific Fit Head Stud Kit with ½” 12 Point Fasteners for Easy Installation and Clearance Issues
+ $ 295.00
T&D any Ratio Pro Series Shaft Rocker System
+ $1690.00
Jesel any Ratio Pro Series Shaft Rocker System
+ $1890.00
Fel Pro MLS Head Gaskets (up to 4.640 bore size and .053″ thickness, other sizes available)
+ $ 190.00
ARP 235-4103 Specific Fit Pro Series Head Stud Kit with Hex Fasteners and Washers
+ $ 325.00
ProFiler CNC Match Ported Intake Manifold
+ $ 490.00
Jomar Special CNC Ported 1¼” Spacer, Stud, Gaskets that actually makes up to 5hp and 10lbs of torque
+ $ 120.00

All Completed Heads Come with Specific Build Sheet, all Part numbers, Spring Rates and Installed Height Settings

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