Ported stock E7 or GT40 heads? - Ford Mustang Forums
 
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post #1 of 4 (permalink) Old 03-24-2013 Thread Starter
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Ported stock E7 or GT40 heads?

I have a 94 gt and im looking at trying to change up my heads. Im looking at either porting my stock heads or trying to put on some gt40 heads by myself. I'm wanting to do this as cheap as possible and I'm not sure which h would be more affordable. With the gt40 don't you have to replace the factory springs before you put them on because they're weak? And is there a thread or website that shows the right way to install heads? Im kinda new to working with heads
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post #2 of 4 (permalink) Old 03-24-2013
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I'm no expert but I do believe you'd waste money porting the stock heads vs getting a set of gt40's. I think the 40's outflow ported e7 heads but I could be wrong. You can easily find a set of gt40's with upgraded springs for $400. Upgrading the springs is a must when you run a better cam but even if you still use the stock cam you should upgrade the springs anyways for the best performance.

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post #3 of 4 (permalink) Old 03-25-2013
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Here is a good read.....

Five.Oh Info : The Ultimate Ford GT40 and GT40P Cylinder Head FAQ

2014 V6 Deep Impact Blue Mustang, Borla Type S, 2.73 (Uughh need 3.73)
1989 Sonic Blue Mustang LX Coupe, 349 ci,
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post #4 of 4 (permalink) Old 03-25-2013
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Quote:
Originally Posted by Kylebach14 View Post
I have a 94 gt and im looking at trying to change up my heads. Im looking at either porting my stock heads or trying to put on some gt40 heads by myself. I'm wanting to do this as cheap as possible and I'm not sure which h would be more affordable. With the gt40 don't you have to replace the factory springs before you put them on because they're weak?
I vote for getting GT40 heads and porting them. If those heads come from an Explorer/Mountaineer, you can swap over the springs from your E7's. If they're GT40 heads from a Cobra, they'll already have uprated valve springs.


2006 GT - 5MT - 12.8 @ 108 - 306rwhp 324rwtq (E)
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