Red Ram Hemi.......

rgp266 said
According to Hot Rod Magazine Sept. 2001 it is possible to bolt correct for the engine application early Hemi Heads on the Poly block. Early Chrysler 301-331-354 engines were produced as both Hemi's and Poly's as were early Dodge 270-315-325 engines. You had to use Dodge parts on the Dodge engine and Chrysler parts on the Chrysler engine. Parts to swap were the heads, pistons, and push rods. What a trip if Red Ram had that deal going on! There are also quite a few parts that swap from LA to Poly listed in the story. I would apologize for hi-jacking this post but I am responding to 72BLUNBLU's comment about it not being possible to do this.
Bob

I said no such thing, you must have misread one of my posts. Not only did I say they COULD be swapped, and I included the poly serial numbers in one of my posts for that very reason. As you can see in my earlier quote

72bluNblu said
I included the Dodge "poly" numbers because its not unusual for hemi heads to be found on a "poly" block, the only difference between the hemi and poly engines are the heads and pistons, the block is the same.

I have in fact personally bolted Dodge hemi heads to a Dodge poly block. No hot rod magazine article needed. And yes, that only works if you keep the brands the same, Chrysler hemi heads will fit Chrysler poly engines, Dodge hemi heads will only fit dodge hemi engines. And DeSoto never made a poly.

Perhaps you misunderstood my post about the poly 318? Because unlike the early poly engines, it can't share heads with any of the hemi's.