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3.9 head 

 

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 Post subject: 3.9 head
Posted: Sat Nov 10, 2018 4:37 pm 
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Are 3.9 heads any good for performance?
I was told that people were using them on E series engines because they have good air flow, is this true?
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 Post subject: Re: 3.9 head
Posted: Sat Nov 10, 2018 7:29 pm 
Getting Side Ways
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I do remember that the cam profile from the 3.9 heads were quite aggressive for OEM,but not sure about flow though.

 

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 Post subject: Re: 3.9 head
Posted: Wed Nov 14, 2018 11:12 am 
Getting Side Ways
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EA Falcon wrote:
Are 3.9 heads any good for performance?
I was told that people were using them on E series engines because they have good air flow, is this true?

Don't use the EA head as it's not as good as the later model heads. The EF/EL head would be a better choice. If you get an AU head, you need the AU cam and rocker gear. Here's some info from Jim Mock, who specialised in modded Ford engines:

http://www.autospeed.com/cms/article.ht ... Two&A=2236

 

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 Post subject: Re: 3.9 head
Posted: Thu Nov 15, 2018 10:17 am 
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Age: 61

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If you have the cam for the 3.9 I'd be interested in it for the reason mentioned,
more aggressive profile than the later stock cams.

 

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