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Most viewed - 4AC
exhaust_valves_stock2C_and_aftermarket2.jpg
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chamber_comparison.jpg
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Rocker_arms_and_shaft_adjustments_needed.jpg
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chamber_differences.jpg
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flowbench_results_4AC.jpg
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curvy_head_ports_difference_2_panel_annoted.jpg
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ported_with_gasket_for_multipanel_annoted.jpg
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Toyota_vs_VS-813_valve_spring.jpg
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one_ported_2_panel.jpg
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chamber_volume2_more.jpg
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ported_with_gasket_for_3panel_annoted.jpg
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back_of_bowl_difference_annoted.jpg
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one_ported_ab.jpg
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curvy_bowl_2_panel.jpg
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curvy_head_-_2_panel.jpg
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