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Dart 19574030 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

19574030
03/04/2034 11:58 PM
Sale Price

$2,550.22

2 left at this price

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Usually delivered within 2 days

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Product Details

Dart 19574030 Cylinder Heads



FULLY CNC PORTED.

Pro 1 CNC BBC 355 Cylinder Head
Bare Casting

Every intake port, every exhaust port, every valve bowl and every combustion chamber is 100% CNC machined on special, dedicated Pro 1 castings. Our 5-axis computer controlled machining centers produce compound curves and complex shapes that no human could duplicate with a hand grinder.

Features:

  • Premium alloy: Dart aluminum heads are cast from virgin 355-T61 aerospace alloy for superior strength and integrity.
  • Bolt on compatibility: 2 degree rolled valve angle and standard spacing accommodates all stock accessories.
  • Heart shaped 121cc chambers improve combustion efficiency.
  • CNC machining ensures that every chamber has the same volume so that every cylinder maintains equal compression.
  • Raised spark plug location improves flame travel for a quicker, more complete burn, producing more power.
  • Multi-angle intake seats and radiused exhaust seats greatly improve air flow.
  • Hardened exhaust seats are compatible with unleaded gasoline.
  • Exhaust ports raised .300 to improve flow (requires 1 longer head bolts next to exhaust ports).
  • Spark plug holes are machined for gasketed 3/4 reach plugs.
  • Manganese bronze valve guides ensure long term reliability.
  • 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

121cc

Combustion Chamber Style

Heart

Combustion Chamber Volume (cc)

119

Cylinder Head Finish

Natural

Cylinder Head Material

Aluminum

Cylinder Head Style

Bare

Damper Spring Included

No

Exhaust Port Location

Raised

Exhaust Port Shape

Round

Exhaust Runner Volume (cc)

138cc

Exhaust Valve Angle

15

Exhaust Valve Diameter (in)

1.880 in.

Exhaust Valves Included

No

Guideplates Included

No

Heat Crossover

No

Intake Port Location

Standard

Intake Port Shape

Rectangular

Intake Runner Volume (cc)

355cc

Intake Runners

355cc

Intake Valve Angle

24

Intake Valve Diameter (in)

2.300 in.

Intake Valves Included

No

Machined for O-Ring

No

Notes

Exhaust flange will accept stock-type gasket.

Oiling Style

Through pushrod

Quantity

Sold individually.

Rocker Arm Nuts Included

No

Rocker Arm Studs Included

No

Rocker Arms Included

No

Steam Holes Drilled

No

Valve Cover Mounting Style

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

2.300 Int / 1.880 Exh

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