phils95cobra
Junior Member
- Joined
- Aug 30, 2013
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Hello Everyone!
I am looking for some advice... My 06 Gt manual is approaching 200K miles and although she runs good, I am looking to do a swap in the not-so distant future and want something different.
Here are the options I was thinking of...
1. Rebuild and stroke out my 4.6 3v to 5.0L
2. Swap out to rebuilt 5.4L 3v
3. Swap out to rebuilt 5.4L DOHC
My goal here is to have more HP and torque, but not a crazy amount. I know I could sink in about 5K or more for a supercharger, but I just don't want to do that. I know that when it comes to best bank for the buck, superchargers are awesome, but I just don't want that route right now. I want to do something different and unique.
I like a challenge. Out of all of these, to me, it seems the 5.4L DOHC from an early 2000's Navigator would fit the bill the best!
I have not concreted my decision, but would like some advice on this.
I know the 5.4 DOHC will fit. I know I will need exhaust mods due to the different placement of the heads compared to the 4.6. I know there may be some mods to accessories, etc. I know that there are probably mods to fuel rails, electrical wiring, etc.
Big questions I have:
IF I go the route of the 5.4L DOHC:
Can I use the stock ECU and get it re-tuned for the 5.4L (Bama, SCT, etc.)
--What exhaust manifold would I have to use? Like those from a 2007 Shelby GT500?
--Regarding the intake manifold, I have seen that MMR makes adapter plated to bolt up any coyote 5.0L intake to the 5.4L DOHC. Could I then use a stock GT500 intake and retain my drive-by-wire for the throttle body?
--How about sensor changes on the engine, i.e. crank, cam, etc.? Would I use all GT500 stuff for this as well?
--Regarding the VVT on the 4.6 3v... how do the cam phasers play into all of this? I know the DOHC does not use this. I have seen this issue brought up on other forums, and wonder how disabling the phasers (i.e. using phaser lockouts) would be any different than them just not existing because of the use of the DOHC engine?
Obviously not the easiest route for an upgrade using the 5.4L DOHC, I know. And I know I only mention the DOHC, but I am not ruling out the other two options either.
Thanks all for the opinions and advice.
I am looking for some advice... My 06 Gt manual is approaching 200K miles and although she runs good, I am looking to do a swap in the not-so distant future and want something different.
Here are the options I was thinking of...
1. Rebuild and stroke out my 4.6 3v to 5.0L
2. Swap out to rebuilt 5.4L 3v
3. Swap out to rebuilt 5.4L DOHC
My goal here is to have more HP and torque, but not a crazy amount. I know I could sink in about 5K or more for a supercharger, but I just don't want to do that. I know that when it comes to best bank for the buck, superchargers are awesome, but I just don't want that route right now. I want to do something different and unique.
I like a challenge. Out of all of these, to me, it seems the 5.4L DOHC from an early 2000's Navigator would fit the bill the best!
I have not concreted my decision, but would like some advice on this.
I know the 5.4 DOHC will fit. I know I will need exhaust mods due to the different placement of the heads compared to the 4.6. I know there may be some mods to accessories, etc. I know that there are probably mods to fuel rails, electrical wiring, etc.
Big questions I have:
IF I go the route of the 5.4L DOHC:
Can I use the stock ECU and get it re-tuned for the 5.4L (Bama, SCT, etc.)
--What exhaust manifold would I have to use? Like those from a 2007 Shelby GT500?
--Regarding the intake manifold, I have seen that MMR makes adapter plated to bolt up any coyote 5.0L intake to the 5.4L DOHC. Could I then use a stock GT500 intake and retain my drive-by-wire for the throttle body?
--How about sensor changes on the engine, i.e. crank, cam, etc.? Would I use all GT500 stuff for this as well?
--Regarding the VVT on the 4.6 3v... how do the cam phasers play into all of this? I know the DOHC does not use this. I have seen this issue brought up on other forums, and wonder how disabling the phasers (i.e. using phaser lockouts) would be any different than them just not existing because of the use of the DOHC engine?
Obviously not the easiest route for an upgrade using the 5.4L DOHC, I know. And I know I only mention the DOHC, but I am not ruling out the other two options either.
Thanks all for the opinions and advice.