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dscf2689--gt40-dr-ported-bowls.jpg Intake/exhaust bowls ported.  The valve throat has been opened up as far as I dared go on the exhaust side, reaching 85% of valve diameter.
dscf2689--gt40-dr-ported-bowls.jpg | Hits: 56 | Posted on: 11/16/20 | View original size (269.04 KB)

Intake/exhaust bowls ported. The valve throat has been opened up as far as I dared go on the exhaust side, reaching 85% of valve diameter.