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  #1  
Old 03-22-2019, 02:49 AM
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Steve Shauger Steve Shauger is offline
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Default Boss Mustangs & More
Brothers amazing collection of popular Mustangs, and topped off by the Boss 429 Semi-Hemi!
http://musclecaroftheweek.com/index....rd-muscle-cars
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Old 03-27-2019, 10:57 PM
RALLY RALLY is offline
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Quote:
Originally Posted by Steve Shauger View Post
Brothers amazing collection of popular Mustangs, and topped off by the Boss 429 Semi-Hemi!
http://musclecaroftheweek.com/index....rd-muscle-cars
Steve, Why is it called a Semi Hemi? I thought the BOSS 429 was a hemi head engine competing against Chrysler Hemi engine? I know the Chevy BB Engines were called a semi hemi at the time. Again 429 Boss had a hemi Ford correct? Thanks Rally
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Old 03-27-2019, 11:31 PM
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If I remember correctly the Boss combustion chambers had a small quench area on both sides.
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Old 03-28-2019, 03:03 AM
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Boss 429



426 Hemi
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Old 03-28-2019, 11:57 AM
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That picture of the Boss heads is a modern after market head. The OEM head is flat on both sides of the combustion chamber.
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