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Factory Five Roadster Engine Build Cnc Machining Closeup

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This close-up of an AFR intake runner shows the CNC machining marks on the whole length of the passage. Notice the careful contouring of material around the valveguide boss. The boss itself does not extend into the passageway. This kind of shaping combined with the smooth machining makes for big power.
Smeding 427 - Project Snake Charmer Part 4

 This close-up of an AFR intake runner shows the CNC machining marks on the whole length of the passage. Notice the careful contouring of material around the valveguide boss. The boss itself does not extend into the passageway. This kind of shaping combined with the smooth machining makes for big power.  View Related Article

 

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