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Australian Heads

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foote500 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote foote500 Quote  Post ReplyReply Direct Link To This Post Topic: Australian Heads
    Posted: 22-May-2017 at 2:17AM
Reading in wikipedia that the aussie heads had a "unique intake manifold". Is that so, and does it matter if you put aussie heads on your engine? Is there after market intakes that cover this?
Marc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MrSmog Quote  Post ReplyReply Direct Link To This Post Posted: 22-May-2017 at 2:26AM
all the aussie heads are is a 2v head with a small closed chamber, no special intake required. any intake that fits a 2v 351c, will fit the aussie heads on a 351c.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Big Bird Quote  Post ReplyReply Direct Link To This Post Posted: 22-May-2017 at 4:42AM
Just don't use an intake for 4V heads, SERIOUS port mismatch.
There are aftermarket 4v intakes for 2V heads.
The above post should be read in a "Grumpy Old Man" voice.
Almost forgot: "Get off my lawn!!!"
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Uncle Salty Quote  Post ReplyReply Direct Link To This Post Posted: 25-May-2017 at 4:20PM
Any 2v intake will work. Mine is a performer intake.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MrSmog Quote  Post ReplyReply Direct Link To This Post Posted: 25-May-2017 at 6:34PM
Originally posted by Uncle Salty Uncle Salty wrote:

Any 2v intake will work. Mine is a performer intake.


did the heads and intake boost the bottom end power as much as I suspect?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72FordGTS Quote  Post ReplyReply Direct Link To This Post Posted: 26-May-2017 at 1:13AM
Originally posted by foote500 foote500 wrote:

Reading in wikipedia that the aussie heads had a "unique intake manifold". Is that so, and does it matter if you put aussie heads on your engine? Is there after market intakes that cover this?

Where did you read that on Wikipedia? I read the 335 series page and it didn't say that.

Vince

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foote500 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote foote500 Quote  Post ReplyReply Direct Link To This Post Posted: 26-May-2017 at 4:26AM
"Until production of the 351 Cleveland began in Australia for 1972, the 351C was imported from the US. Both the 351-2V and 351-4V were imported and were in all respects the same as the American counterparts. In November 1971, when Ford of Australia began producing its own engines, it only produced one style of cylinder head for the 351 engine. This was the 2V head with the smaller ports and open chamber cylinder heads. In March 1972, Ford of Australia began offered a new 351-4V engine with a 4-barrel carburetor. However, these engines used the same 2V cylinder heads as the 351-2V, with a unique intake manifold.[1] No 351C built in Australia used the large port cylinder heads or closed chamber combustion chambers like the US build 351C-4V engines.'

I probably read this wrong, but to me the whole paragraph is confusing.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rockatansky Quote  Post ReplyReply Direct Link To This Post Posted: 26-May-2017 at 4:44AM
the AUS intake is unique in that it has US 2V sized runners and a 4bbl carb pad,
Ford US never produced a 351C 4bbl intake manifold for 2V heads  
 
many times after some editing which happens on wiki the text can become confused and need a complete re-work to set the ideas back in order. or a confusing individual did the editing or original text to begin with
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72FordGTS Quote  Post ReplyReply Direct Link To This Post Posted: 26-May-2017 at 4:46AM
That paragraph  is referring to the Aussie made 351-4V.  It used the 2V heads (open chamber, small port) on their 4bbl engines.  So it required an unique intake, specifically a 4bbl intake but with the small 2V ports.  This would be like the aftermarket Edlebrock 2750 intake, made for a 4bbl carb but has the small ports. 
 
The Aussie heads most people refer to are the 302C heads, not he 351C heads.  The advantage to the 302C heads is that they have the closed chamber combustion chambers, very small combustion chamber volume (56.4 - 59.4cc), while using small port sizes.  These were popular on 400's at one time to boost compression. I think there are better head options out there from the aftermarket now.
 
If you put 302C heads on a 351C, you'd need to run a Eddy 2750 intake to make it work.  A stock American 4V intake would have ports that are too big.


Edited by 72FordGTS - 26-May-2017 at 4:47AM
Vince

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