D8OE Heads...are they any good...what are they from

Casting codes

C = 60's
D = 70's
E = 80's
F = 90's

So D8OE means it's a 1978 casting. So it's a smog head. Probably has BIG chambers.

The D80's most likely are late 70's. Later ones do have the bolt down rockers and should be direct bolt ons.

They do have the large 69 cc chambers, but you could mill them and make up for some of that.

I ported a set and they added 2-3 tenths, over identical stock heads. I did not mill them, but with I had!

If the price is right they are ok, but if you have to spend money, the E7's and such are a better starting point.