Also
@MOPARMAGA
I suppose if the heads are good to go and/or you just want to run iron heads, great! We all have seen what Jim (IQ52) gets from porting them. Though that may be a problem these days with everyone spoiled by aluminum?
IDK.
@fishmens67 makes a good point on the inexpensive aluminum head by compare to rebuilding and then porting the OE iron. I guess you would want to do that rather than get new aluminum heads. TF’s or otherwise.
The valve size & flow advantages are huge over a small block head even with only 23 more cubes, it’ll show up big.
I don’t think aluminum heads should be discarded from this exercise. Mostly due to the cost factor for ether engine series. IMO, it just makes good sense.
Still, getting into the low 13’s or even high 12’s could be done with stock heads. Especially in an A body. You may not like the way it runs and idles, but it is do-able.
