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heads? what are the differencies between them? 

 

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 Post subject: heads? what are the differencies between them?
Posted: Thu Jan 20, 2011 12:33 pm 
Parts Gopher
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Hi guys

this is my first build and i have no idea what to look for in cylinder heads. im looking at a tick flow kit from summit racing with tick flow twistered edge 170 but then i hear gt40 p heads are good and other brands. so could some one help me out.

Cheers

 

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 Post subject: Re: heads? what are the differencies between them?
Posted: Thu Jan 20, 2011 4:05 pm 
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Depends what you want to achieve?
The TFS heads are a way better option than 40p's.
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 Post subject: Re: heads? what are the differencies between them?
Posted: Fri Jan 21, 2011 8:36 am 
Parts Gopher
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ok so what do different heads achieve. So TFS why did you pic them.

thanks mate

 

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 Post subject: Re: heads? what are the differencies between them?
Posted: Fri Jan 21, 2011 11:15 am 
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Have a look here....
http://www.allfordmustangs.com/Detailed/630.shtml
These are flow figures which is not the whole story but straight away you can see the advantages of the TFS over the 40p. 40p's also create problems because of their spark plug angle...most of the better headers out there don't clear them or, if they do it is near on impossible to get all the spark plugs in or out. They also don't have the potential of most all the other aftermarket heads out there.
So the question remains...what do you want to achieve performance wise?

Pete.
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 Post subject: Re: heads? what are the differencies between them?
Posted: Fri Jan 21, 2011 10:50 pm 
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What you will achieve depends on your budget

Let people know what you can spend and you'll get some good advice on how much bang for how much buck

 

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 Post subject: Re: heads? what are the differences between them?
Posted: Sat Jan 22, 2011 12:38 am 
Getting Side Ways
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TFS have superior valve train, thicker deck and don't lift like the Ford heads..
Way less chance of detonation as the head / chamber design is much better...
Larger ports but hardly lose any low rpm torque..
Bigger inlet valve and depending on cam with the 2.02 inlet valve the pistons may not
need to be notched... Generally they make better power without high duration cams..
With enough lift they make decent power...
But again !!! It depends on power level, induction etc...

 

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 Post subject: Re: heads? what are the differencies between them?
Posted: Sat Jan 22, 2011 11:27 pm 
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Somebody please correct me if I'm wrong, however my understanding is that with larger cc heads, more air can flow through them. however, that doesn't mean you should look for biggest heads in existence and bolt them on; If they're too big, you'll lose intake charge velocity and lose low end power as a result. (just like how you lose power from WOT at 1200rpm, the intake velocity is lost)

As a standalone bolt on mod, I've heard good things about AFR 165s. But seeing as you're looking at a kit that replaces a lot more than that, at least you'll know that the ones that come with the kit should work, no hassles.

GT40p heads only look good compared to the stock heads, because the stock ones are just that pathetic.
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 Post subject: Re: heads? what are the differencies between them?
Posted: Sun Jan 23, 2011 1:59 pm 
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Millennium_falconXR8 wrote:
Somebody please correct me if I'm wrong, however my understanding is that with larger cc heads, more air can flow through them. however, that doesn't mean you should look for biggest heads in existence and bolt them on; If they're too big, you'll lose intake charge velocity and lose low end power as a result. (just like how you lose power from WOT at 1200rpm, the intake velocity is lost)

As a standalone bolt on mod, I've heard good things about AFR 165s. But seeing as you're looking at a kit that replaces a lot more than that, at least you'll know that the ones that come with the kit should work, no hassles.

GT40p heads only look good compared to the stock heads, because the stock ones are just that pathetic.


Zigactly!
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 Post subject: Re: heads? what are the differencies between them?
Posted: Mon Jan 24, 2011 8:40 am 
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all right thanks for your help guys

 

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Now a soon to be sliper xh ute simple yet elegant

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