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The dyno results were tested back to back at Cropper Automotive to insure accurate test results.
The first test is a 430 cu in engine with completely CNC ported Track 1 227 heads.
The second test is a 430 cu in engine with the out-of-the-box 18X heads.
The third test is a 430 cu in engine with the completely CNC ported 18X heads.
As you can see, the horsepower increases with the upgrades in cylinder heads.
Engine specs: 430 cu in
15.1 to 1 Compression
Roller Cam
HV 1000 Intake on the Track 1 Heads
HV 1800 Intake on the 18X Heads
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23° CNC Track 1 227*
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rpm
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Torque
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hp
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4700
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588.1
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526.3
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4800
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588.5
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537.8
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4900
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586.6
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547.3
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5000
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593.9
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565.4
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5100
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603.6
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586.2
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5200
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600.5
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594.6
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5300
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597.1
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602.6
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5400
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588.1
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604.7
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5500
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590.4
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618.2
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5600
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577.2
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615.5
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5700
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568.4
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616.9
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5800
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556.4
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614.5
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5900
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554.6
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623.0
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6000
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553.8
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632.7
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6100
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557.0
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646.9
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6200
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557.8
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658.5
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6300
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554.4
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665.1
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6400
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549.3
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669.4
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6500
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541.3
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670.0
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6600
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528.7
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664.5
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6700
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522.3
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666.3
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6800
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514.6
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666.3
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6900
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498.8
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655.3
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7000
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496.2
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661.4
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7100
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476.3
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643.9
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7200
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465.5
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638.2
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680
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15.9
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2.1
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Out-of-the-Box 18X**
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rpm
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Torque
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hp
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4600
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684.0
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599.0
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4700
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694.9
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621.8
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4800
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691.7
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632.2
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4900
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687.4
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641.3
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5000
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696.3
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662.8
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5100
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681.6
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661.9
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5200
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685.2
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678.4
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5300
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671.8
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677.9
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5400
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667.4
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686.2
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5500
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656.1
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687.1
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5600
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645.2
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688.0
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5700
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658.6
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714.8
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5800
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660.6
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729.5
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5900
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645.8
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725.5
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6000
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638.4
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729.3
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6100
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629.1
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730.7
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6200
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623.1
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735.6
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6300
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604.2
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724.8
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6400
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588.1
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716.6
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6500
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570.0
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705.5
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6600
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560.8
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704.7
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6700
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542.7
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692.3
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6800
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528.4
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684.2
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6900
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518.7
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681.4
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7000
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504.2
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672.0
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0
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7.6
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0.0
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CNC Ported 18X***
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rpm
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Torque
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hp
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4600
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748.0
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655.2
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4700
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743.6
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665.4
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4800
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741.0
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677.2
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4900
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745.1
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695.1
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5000
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746.4
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710.5
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5100
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741.0
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719.6
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5200
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733.9
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726.6
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5300
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732.9
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739.6
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5400
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726.5
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747.0
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5500
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718.3
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752.2
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5600
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711.0
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758.1
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5700
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705.0
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765.1
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5800
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699.5
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772.5
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5900
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687.3
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772.1
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6000
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681.6
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778.6
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6100
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662.6
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769.6
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6200
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655.2
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773.5
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6300
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651.2
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781.1
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6400
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641.1
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781.2
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6500
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616.1
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762.5
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6600
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606.2
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761.8
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6700
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592.2
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755.5
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6800
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582.1
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753.7
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6900
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562.3
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738.8
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7000
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556.1
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741.2
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7100
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527.3
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712.8
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7200
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523.1
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717.1
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15.9
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15.9
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15.9
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* The economical 23° CNC Track 1 227 cylinder head is the best standard 23° using all the existing parts.
** The 18X cylinder head is the best out-of-the-box 18° available.
*** The completely CNC ported 18X is one step better, creating a 35 horsepower gain over the out-of-the-box version.
The CNC porting assures the most consistent ports possible. Flow numbers vary as little as 2 cfm per cylinder.
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Phone: (479) 394-1075 • Fax: (479) 394-1996 • 301 Maple • P.O. Box 1347 • Mena, Arkansas 71953
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| Not legal for sale or use on pollution controlled motor vehicles. |
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© 2008 by Brodix, Inc.
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