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WTB Wanted HC426MP 10-3-66 Block

I agree with Rick that the HC stamping means High Compression and should be for a 65 or a 68 SS car. When I had my 65 lightweight, I inspected a few blocks. One was here locally that I found long after I sold my car. We had a dragstrip here in the 60 called steamboat mountain and several SS and lightweights cars raced here. One 65 was even sold here new. Gene Snow used to race here, I know for sure. I have no idea where this block had come from but a guy had it here that he had bought locally and I never knew about it. He had several blocks that had all be used up in fuel racing. This one would have been just an expensive conversion piece. There is another reason I did not want the block but that’s another story. Lol. Any way it was stamped AH 426 HC. The bottom row had an assembly date of early 65 and the builders initial stamped in after that. I saw another original 65 SS block in Dallas at a car show in a regular car. It was not even a real hemi car. He got the motor from a racer.
 
I agree with Rick that the HC stamping means High Compression and should be for a 65 or a 68 SS car. When I had my 65 lightweight, I inspected a few blocks. One was here locally that I found long after I sold my car. We had a dragstrip here in the 60 called steamboat mountain and several SS and lightweights cars raced here. One 65 was even sold here new. Gene Snow used to race here, I know for sure. I have no idea where this block had come from but a guy had it here that he had bought locally and I never knew about it. He had several blocks that had all be used up in fuel racing. This one would have been just an expensive conversion piece. There is another reason I did not want the block but that’s another story. Lol. Any way it was stamped AH 426 HC. The bottom row had an assembly date of early 65 and the builders initial stamped in after that. I saw another original 65 SS block in Dallas at a car show in a regular car. It was not even a real hemi car. He got the motor from a racer.

not to be a smart *** , but Tom Hoover said the street hemi`s were 1110.3 comp. my 68 was -stock...--------10.3<<<<<<<<<<<<<<<<<<<
 
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I have Jim Schilds book on WO and RO cars. On bottom of page 14 the Jim references the 67 Super Stock as the HC426 and would have been specially selected and may not have any variations from street hemi engines.
What what is meant by specially selected, but it may give some idea of criteria of selection? No other references are given other than it was a street hemi engine. The difference of what the HC in front of the 426 on the pad may have a different meaning as being interpreted other than high compression. Normally that area is reserved for the date "C" and engine "H". Other factory literature on 3-10-67 references the engine as a Maximum Performance "MP" engine. It seems as though these engines, ignition, trans and bodies were part of this drag pack program and identified as such?
 
In one article I read they said that "specially selected" referred to "A" engines. I think they were referring to the 4 large white letters on the outside of the block above the pan rail? I would have guessed they wouldn't want that. I would assume they would want a looser engine for drag racing. But maybe I'm going the wrong direction on the "A" engine description.
 
Well, like I said. I had my two motors long ago and sold one before I knew what they were. HC or CH, I’m a little fuzzy on and don’t have any pictures that I can find. I may still have a video of the block I sold to Joel, if I can find it. I know they both had MP stamped on them. Because I had two of them, I thought it was common.
 
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