The Supercar Registry - Boss Mustangs & More

The Supercar Registry (https://www.yenko.net/forum/index.php)

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- - Boss Mustangs & More (https://www.yenko.net/forum/showthread.php?t=154077)

Steve Shauger

03-22-2019 02:49 AM

Boss Mustangs & More

1 Attachment(s)

Brothers amazing collection of popular Mustangs, and topped off by the Boss 429 Semi-Hemi!
http://musclecaroftheweek.com/index....rd-muscle-cars

RALLY

03-27-2019 10:57 PM

Quote:

Originally Posted by Steve Shauger (Post 1440541)

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

big gear head

03-27-2019 11:31 PM

If I remember correctly the Boss combustion chambers had a small quench area on both sides.

Lee Stewart

03-28-2019 03:03 AM

https://i.postimg.cc/5ythCW33/rrui.png

Boss 429

https://i.postimg.cc/FsYtFm1F/r5f555.jpg

426 Hemi

big gear head

03-28-2019 11:57 AM

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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