thanks man,

that means this head have the swirl ports.

the worst head ever , isnt it?

swirl ports heads didn't come until 81-82 and have casting #'s of H95 and H99
what yours does have is exhaust air injection, the thermostat housing has a provision for a one way valve and the head has a hole in it next to the water jacket that leads to the exhaust ports. not good or bad, just a pain to work with if you want to port it.
what it did was inject air into the exhaust stream to allow a more complete burn of fuel in the exhaust manifold, kinda like having an air pump without actually having one.

thanks rgrinder, i didnt know that exists.
this head was a bad surprise, because is round ports, i thought it would be oval.

here is the picture.

what is that things inside the intake holes?

once again thanks to all

Those things that I can see in the two inlet ports on the left are valve guides & a part of the inlet valve stem.

That item in the left side welch plug hole, is that a block heater? It seems to have a spade type electrical fitting.

i dont know what it is. this engine was from USA and im portuguese, we dont use this in here.
All my other engines dont have this.

The car were this engine was in, have air conditioning. maybe is from the ac.

rgrinder, thanks for explaining the casting numbers. It seems none of us knew what they meant until now. This should be a big help in identifying parts.

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Ah, I see it now ... I wonder what that is too.

I also notice that the water temperature switch on the front side of head was moved from the right side (as 1971-1973 A12) to left side starting with the 1974 engines.

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This thing has got me going too. If you are going to dismantle this engine completely, then I would be most gratefull of you would carefully remove this item & let us know what's on the inside. It would seem to be either some sort of temperarure sensor, which air conditioners don't usually use, or perhaps it's a block heater, & thats an item I would like to know about.
Block heaters are cool, in a metaphoric sense you understand, & I would like to have one for my engine.

dodgeman, im not gonna dismantle this engine, i intend to keep it in my shed, just in case i need it.

but i could try to take off the heater and take some photos for you.

Do you live in a icy state?

do you use msn?
if yes please add my : srpinho@hotmail.com

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