pontiac head identification

[SShep71]

I have a set of 214 heads that I cannot find any information about. The casting numbers are H147 and G137. I dont think they are anything special, but I would like to know if they are worth doing anything with.

[70bird]

Those #s don't tell you much. I think they may be date codes, not sure. Starting in 1965, Pontiac heads will have numbers on the center 2 exhaust ports. Usually a 2 digit, sometimes a 3 digit alpha-numeric number.
Almost without exception, The good heads will have screw-in rocker studs and guide plates.Also, 2.11 intake valves and 1.66 exhaust.

Here's a link to a Pontiac head chart:
http://www.angelfire.com/on/geebjen/heads.html

[SShep71]

It says "214" on the center 2 exhaust ports. The heads have guide plates, and have D-shaped exhaust ports

[70bird]

Hmm, interesting. Should be just the "14" on the exhaust ports.

Here's another head chart:
http://www.wallaceracing.com/head1.htm

The only one I see with a 214 is the 1968 400/265hp #9791214