[Ivygreen65]

The heads are December 64 cast standard 289 heads, not hipo heads (no cast spring pockets, not 2 dots over the cast 289). They look to have been tapped for screw-in studs, but don't appear to have been ported on the exhaust side, which is the first place you want to enhance flow. Unless there's more to these heads than what I'm seeing, I don't see them making a lot of power, which makes the Weber set-up odd since this is apparently a well thought out power plant. Maybe a FIA legal motor for vintage racing across the pond.

CI = 289
HP = 345