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    Dart Platinum 227cc CNC SBC 23° Aluminum Cylinder Head 11971143P

Dart Platinum 227cc CNC SBC 23° Aluminum Cylinder Head 11971143P

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Dart Platinum 227cc CNC SBC 23° Aluminum Cylinder Head 11971143P

Dart Pro 1 Aluminum 23° Cylinder Heads

The Pro 1 cylinder head incorporates Pro Stock air flow technology with small, high-velocity runners. It accepts off-the-shelf rocker arms, pistons, manifolds, and headers. Available with 200cc, 215cc, 227cc, or 230cc intake runners with a multi-angle performance valve job and bronze wall valve guides. 

  • Platinum 227 CNC SBC 23° Aluminum Cylinder Head
  • Dart SBC 227cc Pro-1 Head 66cc A/P 2.08/1.60 Assembled 11971143P
  • Cylinder Head - Pro 1 CNC
  • Assembled
  • 2.080 / 1.600 in Valve - 227 cc Intake - 66 cc Chamber - 1.550 in Springs
  • Angle Plug
  • Aluminum
  • Small Block Chevy
  • Sold as Each
  • MPN: 11971143P

Tech Sheet

Dart Platinum CNC SBC Aluminum Cylinder Head 11970040P Tech Sheet

Specifications

Brand
Dart
Part Number
11971143P
Product Line
Pro 1 CNC
Assembled/Bare
Assembled
Chamber Volume
66 cc
Plug Angle
Angle
Intake Runner Volume
227 cc
Exhaust Runner Volume
85 cc
Intake Port Shape
Rectangle
Intake Port Location
Stock
Intake Port Height
2.200 in
Intake Port Width
1.310 in
Exhaust Port Shape
Round
Exhaust Port Location
Stock
Exhaust Port Height
1.410 in
Exhaust Port Width
1.585 in
Intake Valve Size
2.080 in
Intake Valve Included
Yes
Intake Valve Material
Stainless
Intake Valve Length
5.015 in
Exhaust Valve Size
1.600 in
Exhaust Valve Included
Yes
Exhaust Valve Material
Stainless
Exhaust Valve Length
5.015 in
Valve Spring Included
Yes
Valve Spring Diameter
1.550 in
Valve Spring Number
Dual
Valve Spring Damper
Yes
Valve Spring Retainers Included
Yes
Valve Spring Retainer Material
Titanium
Valve Locks Included
Yes
Valve Lock Material
Steel
Valve Lock Angle
10 Degree
Valve Seal Included
Yes
Valve Seal Style
Positive Stop
Rocker Studs Included
Yes
Rocker Stud Size
3/8-24 in
Pushrod Guide Plate Included
Yes
Guide Plate Pushrod Size
5/16 in
Valve Guide Included
Yes
Valve Guide Material
Bronze
Perimeter Mount Valve Cover
Yes
Valve Seat Included
Yes
Intake Valve Seat Material
Ductile Iron
Exhaust Valve Seat Material
Ductile Iron
Valve Seat Finish
Machined
Combustion Chamber Finish
CNC Machined
Intake Runner Finish
CNC Machined
Exhaust Runner Finish
CNC Machined
Intake Valve Angle
23 Degree
Exhaust Valve Angle
23 Degree
Accessory Bolt Holes
Drilled and Tapped
Material
Aluminum
Color
Natural
Finish
Natural
Quantity
Each

Description

Product code: Dart Platinum 227cc CNC SBC 23° Aluminum Cylinder Head 11971143P
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Dart Platinum 227cc CNC SBC 23° Aluminum Cylinder Head 11971143P
Dart Platinum 227cc CNC SBC 23° Aluminum Cylinder Head 11971143P
Dart Platinum 227cc CNC SBC 23° Aluminum Cylinder Head 11971143P
Dart Platinum 227cc CNC SBC 23° Aluminum Cylinder Head 11971143P
Dart Platinum 227cc CNC SBC 23° Aluminum Cylinder Head 11971143P
Dart Platinum 227cc CNC SBC 23° Aluminum Cylinder Head 11971143P
Dart Platinum 227cc CNC SBC 23° Aluminum Cylinder Head 11971143P
Dart Platinum 227cc CNC SBC 23° Aluminum Cylinder Head 11971143P
Dart Platinum 227cc CNC SBC 23° Aluminum Cylinder Head 11971143P

Dart Platinum 227cc CNC SBC 23° Aluminum Cylinder Head 11971143P