03 Stock cylinder heads, 2 different types??

[SonicSnake84]

So this may be a dumb question, and I have spent some time searching but havent found anything conclusive. I have heard in the past that the 03 cobras depending on the production date came with different heads. Not sure what exactly was different about them but I am trying to find out if this is true and what exactly the differences are and which heads my 03 has. Thanks for any/all help and info.

 

[Torrance]

The difference is the non-revised are 4 thread spark plug hole, revised are 9 thread; with better cooling capacity. The added cooling capacity protects against the head tick experienced in the early models.

There's is more technical mumbo-jumbo out there, but in short that's the easiest answer.

 

[pittguy]

Anyone have an idea when the crossover occurred in build numbers

 

[SVT_Troy]

This link has everything you need to know. It does not matter if you have two different types.

Castings

 

[hotcobra03]

Im on 3rd design...cobrabob has info.

 

[SonicSnake84]

Awesome thanks!! I have blue paint on my driver side head. But cant see the casting numbers. Im gonna try to figure it out at work tomorrow if we are slow. Thanks for the info!!

 

[SVT_Troy]

I saw my castin numbers while everything was installed. You just have to find the right angle. And read the link I posted, blue paint doesn't mean anything.

 

[jrgoffin]

...cobrabob has info.

I wonder where that info came from...

 

[SonicSnake84]

So it looks like I have the updated drivers side head!! "DA" on the drivers side and "AG" on the passenger side. Hoping that's a good thing.. haha..

 

[Brutal Metal]

blue paint don't mean anything, there's 4 thread heads out there with it..

 

[jrgoffin]

So it looks like I have the updated drivers side head!! "DA" on the drivers side and "AG" on the passenger side. Hoping that's a good thing.. haha..

Did you even bother to look at this link...

Castings