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Ironhead -shovelhead diff

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  #1  
Old 10-26-2011, 09:49 PM
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Default Ironhead -shovelhead diff

Whats the diff between the Ironhead and the shovelhead? I own a 1975 frame with a 1977 engine sportster. Harbri thanks
 
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Old 10-26-2011, 09:58 PM
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two completly different engines,to start with the ironhead has a transmission attached the the motor(cast into the cases) the shovels trans is separate from the motor,about the only thing that is close in the two motors is the shape of the rocker boxes, the ironhead has iron heads and the shovel has alluminum heads, not even close!
 
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Old 10-27-2011, 08:53 AM
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There are too many differences to list. They are very different engines. There are two similarities - the rocker covers are similar and the names are constructed in a similar fashion - ending with the word Head.

In the Haynes [a British publication] service manuals they mistakenly refer to IronHeads as ShovelHeads. Some guys mistakenly refer to IronHeads as ShovelHeads because of the shape of the rocker covers.
 
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Old 10-27-2011, 10:53 PM
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Originally Posted by Harbri
Whats the diff between the Ironhead and the shovelhead?...
One is a Sportster and the other one isn't.
 
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Old 10-28-2011, 06:47 AM
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> One is a Sportster and the other one isn't.

Accept no substitutes...
 
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