These are my 80cc High Ports. Dave just used a cutter and opened up the bowl area a little and blended. Runner openings just had casting flash removed.
They are 73cc now so might flow a tad more.
Think you might want to have a cam with over .700 lift. Dave told me he would run a .750ish lift cam.
The cam I had was .759 lift but was too aggressive for a PMD block IMO. Had it re ground and have .731 lift now.
|