Building 04 Cobra For Boost

asingh04 · 10-09-2007, 04:31 AM

I have just purchased a 2004 cobra and am very new to this game. Im looking to Build the 4.6L to 5.0 but i have read in forums that there is no point. I dont want to go to any shop and get ripped off. So please help me out. Pros & Cons, Where to get the job done, and so on...

thanks.

xxkazp3rxx · 10-09-2007, 08:28 AM

Why would you bore the motor out? What are you looking to do with it? The 2003/2004 Cobra can already handle a good amount of boost as it sits now... are you looking to run more then 25psi? What is your power/time goal?

mfj · 10-09-2007, 08:59 AM

i would recommend doing a 5.1L stroker..... the extra displacement does help quite a bit..... also, get ur heads ported and get a set of cams, and u will be seeing well over 800rwhp with a twin screw and even more with a turbo set up....

xxkazp3rxx · 10-09-2007, 09:51 AM

does he really need over 800rwhp?? lol

Now if thats what he wants that's another thing, but something tells me he isn't aware of how well these cars make power since he's "new to the game". Why spend the money on a stroker if you can get your actual goal with 1/4 the money spent... I think once he realizes he can hit 650+rwhp with just a blower swap, some fuel and suspension he'll be good.. lol

AZ SNAKE · 10-09-2007, 09:55 AM

If you have a deep wallet then go for the 5.1 stroker.

asingh04 · 10-09-2007, 01:15 PM

I did some research today on the 5.1L Stroker seems like the way to go for me. Where can i get this done for a good price and good quality?

Thanks For the info fellas!

Pictures of the Cobra will be posted soon

mfj · 10-09-2007, 01:38 PM

its going to be expensive anywhere u do it, but xxkazp3rxxmakes a good point.... do u really want over 650 rwhp?????? because it would be completely a waste of money, unless ur goal is 800 rwhp, which will make it uncomfortable to drive on the streets.......... u can get a very good 650rwhp on the stock block, and still be reliable......... whats ur performance goals, and where are u located??

asingh04 · 10-09-2007, 05:29 PM

Im Looking for 650+rwhp for the mean while on pump. Then later down the road get ready for some real boost. But i was thinking i should start building and preping the motor beforehand. Is this a good idea? why or why not? after the bottomend is done i was thinking fr500 heads from fordracing. If you have any information on the heads please let me know.

and again thanks for the help guys.

mfj · 10-09-2007, 05:56 PM

i would keep it a 4.6L then, until ur ready to take the next step. ur stock bottom end can handle a lot of sh!t. once u do a stroker, u'll notice ur gas mileage is rediculously low, and its really not necessary unless u want way over 650 rwhp, which u cannot make that decision, until u have felt what a real 650 hp is...

Blownsvt · 10-09-2007, 06:40 PM

I am looking at going the stroker route as well and then adding a big turbo on it and going for close to 1000 rwhp or so. one of the local guys here just made 999.7 on a stock block @ 33 psi h went 8.95@154 last friday. his car is street legal and he drives it on the road with no problems. since my motor is smoked right now an i am building the whole thing thats the route i am going.