ford hemi head?
ford hemi head?
Posting Guru
Joined: Jan 2006
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From: Malvern, Ohio
Yes, the 429 BOSS heads came as "hemi" but were not totally hemispherical. They are known as the Blue cresent because of the cresent shape. And were only made for the Boss 429's specifically and were aluminum material also. But were only made in 1970 to 1971. The boss engine was only made to be for racing purposes.
Hotshot
Joined: Dec 2003
Posts: 18,423
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From: iowa
actually they were only made in 69 and 70 not 71 at all. And approx 1359 of those engines ended up in mustangs, and 2 ended up in cougars of which only one is still accounted for, and as far as the last time I heard Ford still owned it.
Last edited by monsterbaby; Feb 17, 2006 at 04:59 PM.
Elder User
Joined: Jan 2004
Posts: 552
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From: Northern, Va
FYI, you can put on Boss 429 cyl. heads on 460 block's but some mod's are need to be done ! If ya have the money C&C in Manassas can set you up . He bought the mold's from Ford , Boss 429 block's & head's he sells turn key Engines or part's. All block & heads are alum. though mostly racing engine's.
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Hotshot
Joined: Dec 2003
Posts: 18,423
Likes: 9
From: iowa
there is lots of places that make blocks that can accept Boss style heads, and actually I believe AR owns the original Boss heads and made racing versions of them starting in around 72 or 73, plus a version of them can still be bought from ford motorsport with the designation of A441. I am not entirely sure but I believe there is another company that sells them also but a little hard to come by.
As far as blocks you can use the RDI alum block or the AR alum block I believe the IDT block can be setup to run original boss heads also and I know the A460 block from FRPP also has the priority main oiling system that is required to use them on that block.
As far as putting original Boss 9 heads on other factory blocks, your right you have to do a lot of mods that flat isn't worth the effort, first you must plumb a oil line to each head (you cannot modify the block to accept this) and you must also make an external oil return line since they don't return the oil the same way to the pan. plus the standard, and CJ blocks do not use a priority main oiling system and are drilled completely differnt form the Boss block, so it's actually a waste of a good set of heads.
As far as blocks you can use the RDI alum block or the AR alum block I believe the IDT block can be setup to run original boss heads also and I know the A460 block from FRPP also has the priority main oiling system that is required to use them on that block.
As far as putting original Boss 9 heads on other factory blocks, your right you have to do a lot of mods that flat isn't worth the effort, first you must plumb a oil line to each head (you cannot modify the block to accept this) and you must also make an external oil return line since they don't return the oil the same way to the pan. plus the standard, and CJ blocks do not use a priority main oiling system and are drilled completely differnt form the Boss block, so it's actually a waste of a good set of heads.
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Fleet Mechanic
Joined: Mar 2004
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From: Kansas
Originally Posted by monsterbaby
As far as putting original Boss 9 heads on other factory blocks, your right you have to do a lot of mods that flat isn't worth the effort, first you must plumb a oil line to each head (you cannot modify the block to accept this) and you must also make an external oil return line since they don't return the oil the same way to the pan.
Hotshot
Joined: Dec 2003
Posts: 18,423
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From: iowa
You may not be able to get them through Ford anymore but ford hemi heads are still available.
Hemi heads
But as you can see they ain't cheap at $2750 ea bare
Hemi heads
But as you can see they ain't cheap at $2750 ea bare
Post Fiend
Joined: Mar 2004
Posts: 6,056
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From: Union, Washington
You guys are ignoring the first Ford "Hemi" engine. The 427 SOHC motor, 616 horsepower at 7000 rpm and 515 lb-ft of torque at 3800 rpm with a single 4 barrel carb. The 2X4s version was stronger. This was back in the '60s.
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From: Ilion Herkimer
the guy i baught my truck from has/had one sitting on an engine stand in his garage... complete and ready to run. he's really big on his mustangs and last i new had about 12 of them all in fair - excellent condition. not to mention nos parts and a whole lotta other ford parts...
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