Proflow Cylinder Heads, AirMax 170, Big Block Ford FE ,390-428
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Proflow does not sacrifice quality for a low price–you get both with our aluminium cylinder heads. The lightweight heads are cast from A-356 aluminium alloy with a large choice of engine, for SB & BB Chevrolet, LS Chev Holden Ford SB 289-351W, 302, 351 Cleveland 2V & 3V & BB FE, and Chrysler SB & BB. They have phosphorous bronze valve guides, and ductile iron valve seats for use with unleaded gas. They’re also end-milled and drilled for accessories. The fully assembled heads have stainless steel valves, high performance valve springs, 7 degree valve locks, rocker arm studs, and guideplates. Perfect for your Mild or High performance Hot Rod.
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| Combustion Chamber Volume: |
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72cc |
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| Intake Runner Volume: |
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170cc |
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| Exhaust Runner Volume: |
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125cc |
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| Intake Valve Diameter: |
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2.09” |
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| Exhaust Valve Diameter: |
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1.66” |
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| Valve Stem Diameter: |
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3/8″ |
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| Valve Guides: |
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Manganese bronze |
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| Deck Thickness: |
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5/8” |
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| Valve Spring Diameter: |
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1.55″ |
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| Valve Spring Maximum Lift: |
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.600″ |
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| Rocker Stud: |
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N/A |
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| Guideplate: |
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N/A |
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| Pushrod Diameter: |
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3/8 |
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| Valve Angle: |
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13° |
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| Exhaust Port Location: |
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Stock |
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| Spark Plug Fitment: |
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14mm x 3/4” Reach, |
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