cobra heads

**scott5** · 05-07-2007, 02:38 PM

How good are the cobra gt-40 heads for a 5.0? I am just looking for a basic step up upgrade. they will be ported and polished by my buddy. I found a couple sets for 300-500 bucks and which compared to alot of heads i been checking out is cheap. I have made a list of the upgrades im going with and i figure these would work well with them but what you guys think gt-40s a good step up upgrade and worth the money? I will be running a gt-40 intake, 3/8 spacer, gt-40 elbow with a e-303 cam with 24lb injectors, 190 lph, 76mm mass air, 70mm throttle body.. Thats what i have in my head cuz i have the dream list at my house.. I was looking around 300 at wheels also. Would those heads and this setup have that in my future?

**Killercanary** · 05-07-2007, 02:51 PM

IMO, you'd be better off with a set of GT40P's from the 97.5-up explorer/mountaineer. They require their own specific header, but they seem to produce more power than the older style GT40's.

You will not see 300 to the wheels with that setup, figure more along the lines of 260-275.

**J-rod** · 05-07-2007, 02:55 PM

with the GT-40P heads you can run BBK unequal length headers

http://www.steelcitystangs.com/forum...GT-40p+headers

**coralcoupe1993** · 05-07-2007, 05:39 PM

GT-40 heads are ok. If you are going to go through the task of tearing your motor down, I would go with something a bit more aggressive so it is worth it. Up to you though. I have seen people do great port with with those!

**Warriorblaze** · 05-07-2007, 07:33 PM

I have the GT40P's on my coupe. They're alot better then an E7, but won't hold water against any of the aluminum heads on the market.

Save up and buy a nice aluminum set. AFR 165/185, Twisted Wedge, etc.