How many different casting numbers are there for aluminum BBC heads?

[AnthonyS]

Originally Posted by Flying Undertaker

Anthony: The heads that you have are prototype (pre-production) heads. Any part numbers that start with a zero (0) or a zero dash (0-) are prototypes. I have a (0-xxxxxx) aluminum intake manifold with a winters snowflake emblem, as I am near the winter's foundry plant in Canton, OH. Don.

Thanks Don.

[AnthonyS]

Originally Posted by L78racer

Curious as whether they are open or closed chamber. Any pics of the bottom side?

Sure.

[AnthonyS]

Thanks for the PMs everyone, I'll respond to everyone.
Anthony

[Igosplut]

So, assuming they haven't been worked, these would be the first experimental open chamber heads I guess...

[L78racer]

Could be. Chambers look fairly uniform.

[AnthonyS]

FYI, sold these on the other sYc "for sale" ad I posted.

Thanks everyone!
Anthony

[firstgenaddict]

On the way home from the Camaro Nationals my brother and I stopped at a fellow NCRS member's shop and took a tour --- he has an 0- aluminum block from Jim Hall's shop which he picked up prior to 1969 as a badly beat up engine- I noticed that it has an external passage for dry sump or mains priority lubrication.
Block was hurt but mostly fixed, needed the lifter bores for 7 and 8 milled and bushed plus 7 and 8 dry liners installed.
The gentleman also has the CE ZL1 from the Lemans Blue Sport Chevrolet ZL1.