I am new to the 4.6l world. I recently bought a 2001 GT 5-spd. I hear a lot about 2v and 4v but how do I tell what my car has? Also, do they come with PI inatke and heads or is that just upgrades from stock?
The 96-98Gt's cars all do the PI heads and intake swap.. its good for another 50hp or so over these cars. The 99-04gt's come with the PI motors stock.
Also just looking at a 4v motor and a 2v motor, trust me you will know when you see it.,. a 4v looks you couldnt fit a bigger motor in the engine bay, and our little 2v are not so much lol..
You can do the heads, but thats not the only thing.. Now granted i have never done it but ALOT of guys talk about it on here, and its heads, Intake manifold, and i think the ECU.. cuz i know our motors have Cam sensors and i am sure there is a bit more, just cant think of it lol..
you can swap to the 4V heads but its NOT cost effictive......better to-do a whole DOHC swap but be advised, you'll need exhaust, coolant hoses, air inlet hose(s), PCM and harnesses and more.....
For the full swap (making it like a factory stock 4v) requires a lot of money for heads, intake, plenum, tb, timing covers, computer, etc...In the eng you'd be better off buying a forged longblock for about the same price. Even if you decided to do the swap over the forged engine, it wouldnt do much good after adding forced induction beacause your still limited at about 400rwhp by the 2v internals, which can be attained on 2v heads.