Here is my ported slant head done by Jerry Killian, owner of http://killiansportingservice.com/index.html right down the road from me in Warner Robins, Georgia. He is a very renowned porter in this area. I have the flow sheet, which I will post later when I get time. Before and after flow @ .450 lift (which is about where my cam will be after lash and crappy rocker ratio) is as follows:
Intake before @ .450 - 145.4
Intake after @ .450- 174.9
Exhaust before @ .450- 97.6
Exhaust after @ .450- 153.4
These numbers were acheived with a crappy roughed in single 45* seat and NO competition valve job OR deshrouding to the combustion chamber. I took Jerry my head gasket so he can deshroud, plus he's sending it out for a full competition valve job. He said he expects it to pick up even more.
View attachment SLANT HEAD.jpg
View attachment SLANT HEAD1.jpg
View attachment SLANT HEAD2.jpg
Intake before @ .450 - 145.4
Intake after @ .450- 174.9
Exhaust before @ .450- 97.6
Exhaust after @ .450- 153.4
These numbers were acheived with a crappy roughed in single 45* seat and NO competition valve job OR deshrouding to the combustion chamber. I took Jerry my head gasket so he can deshroud, plus he's sending it out for a full competition valve job. He said he expects it to pick up even more.
View attachment SLANT HEAD.jpg
View attachment SLANT HEAD1.jpg
View attachment SLANT HEAD2.jpg