What can you tell me about these HEMI heads? I know they are older Keith Blacks. They seem to be hand ported and the valve covers have Dick Landy stickers on them. Is there any such thing as a typical flow range on these heads after porting? They have 2.25/1.90 valves.

The exhaust pattern does not look like the stock pattern to me. Is it likely that these heads have the D ports? Would they be the raised port? Where does that put me on header availability?

I would like to put this engine in my 70 Cuda. How many issues will these heads add to the install? And how about streetability on a 500" engine?

I would really appreciate any and all info on this. (You can see how little I know.) And that will probably lead to more questions.

Thanks!

DLI usually stamped the heads if they touched them.

P/N P3690483 are rocker arms for a Colt 4 cylinder engine.

Actually, I listed the block number by mistake. Brain fart, I guess. But P3690483 is the number on the block, right beside the Keith Black name. I just went over and double-checked it.

Now, the head number is P4120711. I called Keith Black and talked to Ken. What a nice guy and super-helpful. He got me up to speed on the items.

FYI; the heads are raised "D" port water heads and since TTI makes headers for them that fit my car- they will work great in my Cuda.