4.6L General Discussion This section is for non-tech specific information pertaining to 4.6L (Modular) Mustangs built from 1996 to 2004.

4V versus 2V

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Old 08-25-2010, 01:37 PM
  #11  
0949er
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Old 08-25-2010, 01:53 PM
  #12  
945LSTANG
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Originally Posted by defconfire
There are several types of 4V and 2v heads which went into a lot of different cars but here is a quick summary.

1996-1998 Cobra's had 4v B-Heads
1999-2001 Cobra's had 4v C-Heads
The 2000 Cobra R had 4V C-Heads
2003-2004 Mach 1s had 4v C-Heads with a Navigator Exhaust cam and a modified intake cam for more torque.
2003-2004 Cobra's had 4v C-Heads and the supercharger obviously

The GT's From 1996-1998 Had 2V NPI Heads
The GT's From 1999-2004 Had 2v PI heads
The 2001 Bullitt's Had PI heads and a shiny intake manifold.

The GT-500 from 2006-Now Has C-heads which are basically a modified Cobra-R Casting,

I think that covers most of the Mustangs off the top of my head
you're a little wrong with your 4V info there man. the 2000 cobra r had its own unique set of heads in which only 300 were produced. out of all 4V heads, this head has the best flow capabilities in the higher rpms. good luck finding a pair though, as only 300 were ever produced. the 03 cobra also doesn't use the tumble port C head like you are suggesting. it uses a similar design as the 2002 FR500 head, but has an exhaust port that flows a little better at higher rpms. the mach 1 also uses the same casting as the cobras, but utilizes different hardware.
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