BBC heads cast iron sq port 990 castings

[jackal]

These heads have 2.25 intake valves and 1.94 exhaust valves, 1.6 diameter roller cam valve springs with 200 lbs eat pressure.
They have been fully ported and back from the machine shop and ready to bolt on, excellent condition, can provide phone number for the machine shop where the heads were checked.
The heads are complete with rockers studs and guide plates. 950.00 dollars for the pair.

thanks jp

[JHS]

What is the casting date for these heads? Thanks.

[jackal]

1973 1974

thanks jp