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5.0L 4v Head Exhaust Port

Discussion in '5.0L Coyote V8 Engine Modification/Discussion' started by PaleRider, Nov 19, 2014.

  1. PaleRider

    PaleRider Death Spank Established Member

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    Anyone know what the diameter of the exhaust port on the head is?
    Thanks
     
  2. Livernois Motorsports

    Livernois Motorsports Authorized Vendor Authorized Vendor

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    The opening our CNC'd ones are 1.5" x 1.535"
    Looks like O.E. is 1.425"-1.430"
     
  3. PaleRider

    PaleRider Death Spank Established Member

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    Wow I heard that the 1-7/8" headers were very good for the GT 5.0l now it makes me wonder.
     
  4. PaleRider

    PaleRider Death Spank Established Member

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    I thought the port was a circle?
     
  5. Livernois Motorsports

    Livernois Motorsports Authorized Vendor Authorized Vendor

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    looks like a circle, does not measure so.
    1-3/4" on a n/a low revving build.
    1-7/8" on a power adder car or one with head and cams
     
  6. PaleRider

    PaleRider Death Spank Established Member

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    Gotcha. Thanks
     
  7. PaleRider

    PaleRider Death Spank Established Member

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    Exhaust Flow

    Oh would you happen to know what the exhaust flow is at peak valve lift?
     
  8. SID297

    SID297 OWNER/ADMIN Staff Member Administrator

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    On a stock cam?
     
  9. PaleRider

    PaleRider Death Spank Established Member

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    Yes of course
     

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