Yellow Fever

Can someone please tell me the difference between the 2001 Cobra 4v heads,
and the 03-04 4v heads ? As I have no idea. Thank you in advance.


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Yellow Fever

Is there no one smart enough to answer this question ?


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97stang33

They are the same heads and cams

Fobra

I believe the cam profiles are little different for the 03/04 cobra heads, IF I had a choice I would get 01 C heads

Yellow Fever

I found a set of new FR500 heads. Would those be even better ? I'm cosidering doing[/align]a 4v swap in my pitiful GT. So any knowlegable advice would be appreciated.[/align]

tbirdscwd

I'm pretty sure they're completely different castings. From what I've seen the 03-04 cobra heads outflow previous 4vs like its nobodys business. Cams are also different. I know SHM has all the bench flow ratings posted on their website if you want to get specific. But no matter what year heads you go with they'll be a huge upgrade to the 2vs.

Fobra

The cobra heads are good, but I dont think they are as good for higher rpms like the c heads, however they do flow the most stock. However even B heads with race porting are basically even with ported C heads in total cfm. The getting the heads is not that hard, its getting the intake, TB and timing stuff that makes the swap problematic

silverstang1996

01 heads don't flow as well as the 03/04 heads, they aren't that much behind, but its just a little difference

lizzyfan

+1, 03/04>96-98>99/01

Darkcrime

That's crazy to think about....

If the 03/04 heads are better, that means the stock supercharger makesLESS THAN65 more flywheel hp than the 99/01 cobra's. Correct?
I have been told they underrated the 03-04 termies to where they are at around 425 or so flywheel but still....

Is there anyone that has info on this? flow charts or anything... Im curious to see if they are the same heads, and if not, how much more one flows over the other (if that makes sense)