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Dart 11970040P Cylinder Heads

Manufacturer

Dart

<p>Dart is committed to producing the best engine components available. All development, machining and assembly are done at Dart&rsquo;s own facilities in order to maintain the highest standards of quality. State of the art CNC machining centers, a computer controlled dynamometer and the proprietary &ldquo;Speed Flow&rdquo; technology / wet flow bench are among the assets which contribute to &ldquo;the Dart advantage&rdquo;.</p>

Part Number

11970040P
02/28/2034 9:44 PM
Sale Price

$1,822.12

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Product Details

Dart 11970040P Cylinder Heads



FULLY CNC PORTED.

Pro 1 CNC SBC 227 Cylinder Head
Bare Casting

The redesigned chamber features improved fuel distribution , spark plugs are located high and as close to the center of the chamber as possible and five angle intake seats shear the liquid fuel and air as it enters the chamber. The intake face, exhaust face and exhaust ports have been redesigned, valve guide bosses are profiled and casting walls are cleaner and more consistent, resulting in greater control over flow, heat and combustion. Multiple intake sizes are available to suit engines from mild street to big-inch full competition.

Features:

  • Premium alloy: Dart aluminum heads are cast from virgin 355-T61 aerospace alloy for superior strength and integrity.
  • Bolt on compatibility: Standard valve angle and spacing are retained to allow use of off the shelf pistons and valve train components.
  • Heart shaped chambers improve combustion efficiency and fit most standard pistons.
  • Multi-angle intake seats and radiused exhaust seats dramatically increase airflow.
  • Hardened exhaust seats are compatible with unleaded gasoline.
  • Manganese bronze intake valve guides and phosphorous bronze exhaust valve guides extend cylinder head life.
  • Choice of angled or straight spark plugs to clear manifolds and headers.
  • Spark plug holes are machined for gasketed 3/4 reach plugs.
  • 5-axis CNC bowl blended for optimal flow characteristics.
  • Dual exhaust bolt pattern spot is provided for easy header fitment.
  • All cylinder heads sold individually.

Products specifications

Accessory Bolt Holes Drilled

Yes

Calculator

Compression Calculator

CNC-Machined Combustion Chamber

Yes

CNC-Machined Exhaust Runner

Yes

CNC-Machined Intake Runner

Yes

Comb Chamber

66cc

Combustion Chamber Style

Heart

Combustion Chamber Volume (cc)

64

Cylinder Head Finish

Natural

Cylinder Head Material

Aluminum

Cylinder Head Style

Bare

Damper Spring Included

No

Exhaust Port Shape

Square

Exhaust Runner Volume (cc)

85cc

Exhaust Valve Angle

15

Exhaust Valve Diameter (in)

1.600 in.

Exhaust Valves Included

No

Guideplates Included

No

Heat Crossover

No

Intake Port Location

Standard

Intake Runner Volume (cc)

227cc

Intake Runners

227cc

Intake Valve Angle

24

Intake Valve Diameter (in)

2.080 in.

Intake Valves Included

No

Machined for O-Ring

No

Oiling Style

Through pushrod

Outside Diameter of Outer Spring (in)

1.550 in.

Quantity

Sold individually.

Rocker Arm Nuts Included

No

Rocker Arm Studs Included

No

Rocker Arms Included

No

Spark Plug Style

Angle

Steam Holes Drilled

No

Valve Cover Mounting Style

Center and perimeter bolt

Valve Guide Material

Manganese bronze

Valve Seat Machine Style

4-angle intake/3-angle exhaust

Valve Seat Material

Ductile iron

Valve Seats Machined

Yes

Valve Springs Included

No

Valves

2.15 Int / 1.60 Exh

Great service. fast shiping!

So far so good.

Great easy shopping.

I bought this item for my fiance and he loves it! He was completely happy with the price we paid...

Best prices I found online.. processed same day and recieved same week..packaged great and works great.

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