How do I identify cylinder heads?

[BJV]

a few years ago I bought a set of cylinder heads that were advertised as fitting a 3.2 liter engine. I have finally pulled the heads out of the shipping containers and now I'd like to know how can I figure out what they fit.

Thanks,

 

[titaniumdave]

3.2 L heads have 36 mm intake valves, the 3.0 L have 34mm intakes. That's the easy way to tell them apart. Heads should bolt on either block.

 

[BJV]

3.2 L heads have 36 mm intake valves, the 3.0 L have 34mm intakes. That's the easy way to tell them apart. Heads should bolt on either block.

I'll go check the intake valves right now

Thanks