Real World Flow Differences 2.08"/ 1.74" Valves vs 2.14"/ 1.81" Valves " Pictures Added"
Trying to get quality photos shining a flashlight at them is an issue. I shot one of a stock intake port vs the ported intake (reflection and shadows is killing the ported image) and the camera angle isn't helping either. They are actually much better looking in person than the photos shows. Also the intake face has been flat milled on the ported head, so it's a little confusing to look at and realize just how much has been changed.
As you can see in the photo of the stock port the pushrod area kills the port width. I took some quick measurements for reference between the two.
The stock port opening measures 2.17" x 1.14", but quickly necks down to around 2.05" x .900" because of the protrusion. Removing that area and using offset rockers really opens it up.
Ported head at the opening measures 2.575" x 1.17" (The roof is raised .405", not .350" like I thought it was) and does not neck down any longer in the pushrod area, so there is a huge improvement in port volume and flow. The floor is stock as cast and you can still signs of that.
Tom
Trying to get quality photos shining a flashlight at them is an issue. I shot one of a stock intake port vs the ported intake (reflection and shadows is killing the ported image) and the camera angle isn't helping either. They are actually much better looking in person than the photos shows. Also the intake face has been flat milled on the ported head, so it's a little confusing to look at and realize just how much has been changed.
As you can see in the photo of the stock port the pushrod area kills the port width. I took some quick measurements for reference between the two.
The stock port opening measures 2.17" x 1.14", but quickly necks down to around 2.05" x .900" because of the protrusion. Removing that area and using offset rockers really opens it up.
Ported head at the opening measures 2.575" x 1.17" (The roof is raised .405", not .350" like I thought it was) and does not neck down any longer in the pushrod area, so there is a huge improvement in port volume and flow. The floor is stock as cast and you can still signs of that.
Tom
