Dart BBC Pro 1 335-355 Pro II 380cc Fully CNC Ported Heads

$3295.00

DART Heads are Fully CNC Ported, Not Just Some CNC’d Areas. These are Some of the Best Heads for 540-632CI BBC’s. Manley Valves & NexTek 1.640″ Springs & Titanium Retainers  .880″ Lift Cams (030111)

  • 355 T6 Virgin Aluminum Alloy
  • Dart 4 Angle Int-Valve Seat w/Rolled Radius Exhaust
  • Fully CNC Wet Flow Combustion Chambers
  • Raised Exhaust Port (.300″)
  • Increased Deck Thickness
  • Accessory Bolt Holes In Stock Location
  • Drilled & Tapped For Inside Head Bolts
  • Ductile Iron Valve Seats
  • Bronze Alloy Valve Guides
  • Fits Standard Chevrolet Style Blocks
  • Utilizes Existing BBC Intake Manifolds
  • Uses Standard BBC Header Pattern
  • Uses Standard BBC Rocker Arms
  • 121cc CNC’d Combustion Chambers
  • 2.300″ Manley Stainless Steel Intake Valves
  • Seats Diked and Hand Lapped to Insure Perfect Seal
  • 1.880″ Manley Stainless Steel Exhaust Valves
  • Seats Diked and Hand Lapped to Insure Perfect Seal
  • Manley Nex Tek 1.640″ Double Roller Springs (.880″ Lift)
  • Manley 10° Titanium Retainers
  • Manley 10° Machined Locks
  • U.S. P/C Valve Stem Seals
  • Dart Special Hardened Spring Cups
  • Screw In Studs & Guide Plates Supplied
  • Hot Washed Blown Dry & Clean
  • Professionally Assembled, Packaged & Shipped

Upgrades & Options

All New Dart Pro II 380cc Cylinder Heads
+ $250.00
Upgrade any 335-355-380 head with 2.350″ Intake & 1.850 Exhaust  (up to 30hp gain)
+ $395.00
Manley Titanium Intake Valves
+ $795.00
Manley Titanium Exhaust Valves
+ $795.00
Manley Inconel Extreme Duty Exhaust Valves
+ $325.00
Pacaloy 947 Triple Valve Springs (Intake Only)
+ $125.00
Pacaloy 947 Triple Valve Springs (Intake & Exhaust)
+ $200.00
Manley Nex Tek 1.677″ Triple Valve Springs
+ $255.00
Dart 2 Piece Adjustable Guide Plates w/center lock bolt
+ $50.00
ARP Head Stud Kit
+ $195.00
Dart Inner Valley Head Stud Kit
+ $90.00
Mill Heads to 114cc Combustion Chambers
+ $100.00
Jesel Sportsman Shaft Rocker System
+ $995.00
T&D Shaft Rocker System w/Roller Tip Pro Series Rockers
+ $1395.00
Jomar Pro Series Stud Girdle
+ $245.00
Cometic MLS Head Gaskets (up to 4.630 bore size and .051″ thickness, other sizes available)
+ $195.00
Pro-Filer Sniper or Sniper Jr. CNC Intake Match Ported for these heads, Just Bolt On!
+ $475.00
Jomar Special CNC Ported 3D 1¼” Spacer, Actually makes up to 5hp and 10lbs torque
+ $75.00
Dart CNC Fully Ported 4500 Intake Manifold
+ $795.00