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Airflow Research 1103 High-Performance Aluminum Cylinder Heads

Manufacturer

Picture for manufacturer Airflow Research

Part Number

1103
5 reviews
Sale Price

$2,981.76

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Usually delivered within 2 days

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Product Details

The Airflow Research 1103 cylinder heads are precision-engineered aluminum performance heads designed to deliver significant horsepower and torque gains over stock castings. AFR cylinder heads feature CNC-ported intake and exhaust runners for optimal airflow characteristics, along with precision valve job and chamber work for maximum efficiency.

Key Features:

  • CNC-ported aluminum construction for superior heat dissipation and weight reduction
  • Precision-machined combustion chambers for optimal compression and flame propagation
  • High-quality valve train components including bronze valve guides and hardened seats
  • Designed for performance street and racing applications
  • Direct bolt-on installation for simplified installation process

Airflow Research cylinder heads are engineered to provide maximum performance potential while maintaining excellent durability and reliability. Each head is manufactured to strict tolerances ensuring consistent quality and performance across all applications.

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

Combustion Chamber Style

Heart

Combustion Chamber Volume (cc)

65

Cylinder Head Finish

Natural

Cylinder Head Material

Aluminum

Cylinder Head Style

Assembled

Damper Spring Included

Yes

Exhaust Port Location

Raised

Exhaust Port Shape

Square

Exhaust Runner Volume (cc)

80cc

Exhaust Valve Angle

23

Exhaust Valve Diameter (in)

1.600 in.

Exhaust Valves Included

Yes

Guideplate Pushrod Size

5/16 in.

Guideplates Included

Yes

Heat Crossover

No

Intake Port Location

Standard

Intake Port Shape

Rectangular

Intake Runner Volume (cc)

210cc

Intake Valve Angle

23

Intake Valve Diameter (in)

2.080 in.

Intake Valves Included

Yes

Lock Style

10 degree

Locks Included

Yes

Machined for O-Ring

No

Maximum Valve Lift (in)

0.710 in.

Notes

Cylinder heads are based on a L98 geometry, not compatible with self-aligning rocker arms. Exhaust port is raised 0.250 in. over stock. These cylinder heads are competition ported.

Number of Springs Per Valve

Dual

Oiling Style

Through pushrod

Outside Diameter of Outer Spring (in)

1.550 in.

Quantity

Sold as a pair.

Retainer Material

Chromemoly steel

Retainers Included

Yes

Rocker Arm Nut Thread Size

7/16-20 in.

Rocker Arm Nuts Included

No

Rocker Arm Studs Included

Yes

Rocker Arms Included

No

Spark Plug Style

Angle

Steam Holes Drilled

No

Valve Cover Mounting Style

Center and perimeter bolt

Valve Guide Material

Bronze

Valve Seat Machine Style

3-angle

Valve Seat Material

Ductile iron

Valve Seats Machined

Yes

Valve Stem Seal Style

Viton®

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Very pleased with product and shipping prices. Best price on the internet.Took a few to many days between order placement and shipping. Once the product was shipped the timing was very good.Talked with support-they were helpful and friendly.

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