4.6 to 5.4 Swap
#1
4.6 to 5.4 Swap
Im thinking about doing a 5.4 swap next year. I read some forums & it seems fairly doable. Im estimating around $2000 & thats including the HPS intake manifold & a good used 5.4 2V SOHC Longblock. Im only interested in the 2V engine because I think that would be the easiest to find & fit on my car.
Would it be worth to swap a 5.4 2V engine on my Mustang GT? Can anyone post 5.4 Swap Dyno results & their mods? Quarter mile times?
Would it be better to swap a 4.6 4V from a Mark VIII?
Would it be worth to swap a 5.4 2V engine on my Mustang GT? Can anyone post 5.4 Swap Dyno results & their mods? Quarter mile times?
Would it be better to swap a 4.6 4V from a Mark VIII?
#3
The 5.4 makes a bit more torque than either 4.6l, but the 5.4 (2v) makes peak power around 5K. Bottom line is 2v heads flow pretty poorly, even heavily ported.....the 4v heads outflow ported 2v heads all day.
If you are looking for the torque and slight displacement advantage of the 5.4, and want to make peak power higher than 5K you could do a 5.4 4V swap....which gets more complicated as your choice of intakes is severly narrowed.
Overall I would say go with a 97-98 mark viii engine (complete of course), you can't really go wrong with a 4V.....butttttttttt I could be a tiny bit biased.
If you are looking for the torque and slight displacement advantage of the 5.4, and want to make peak power higher than 5K you could do a 5.4 4V swap....which gets more complicated as your choice of intakes is severly narrowed.
Overall I would say go with a 97-98 mark viii engine (complete of course), you can't really go wrong with a 4V.....butttttttttt I could be a tiny bit biased.
#4
5.4 on a budget
Im thinking about doing a 5.4 swap next year. I read some forums & it seems fairly doable. Im estimating around $2000 & thats including the HPS intake manifold & a good used 5.4 2V SOHC Longblock. Im only interested in the 2V engine because I think that would be the easiest to find & fit on my car.
Would it be worth to swap a 5.4 2V engine on my Mustang GT? Can anyone post 5.4 Swap Dyno results & their mods? Quarter mile times?
Would it be better to swap a 4.6 4V from a Mark VIII?
Would it be worth to swap a 5.4 2V engine on my Mustang GT? Can anyone post 5.4 Swap Dyno results & their mods? Quarter mile times?
Would it be better to swap a 4.6 4V from a Mark VIII?
If you are looking for more on a budget, the 4v swap will be harder, but will give you more horsepower. The 2v will look stock, but will need TFS or heavily ported factory heads to make serious power. With Stage III factory heads and custom (Bullet or CMS) cams (and HPS intake), you can expect something in the mid 300s for horsepower. With TFS heads, you'll be pushing close to 400 (N/A).
If you have a hard $2000.00 limit, I would look for a low-mileage 4v 4.6 or throw ported heads and cams at the 2v 4.6.
#5
For $2000.00 you can find a used motor, throw the intake at it and have your muffler shop widen and lengthen your h-pipe. You can probably get by with the factory fuel pump and you will definitely notice the extra torque, but the motor won't make any more over 4000 RPM than a 4.6 2v would. Without spending a few hundred more for at least cams, fuel upgrades and a tune, I think you may be disappointed in the results.
That said, I think the 5.4 can be a very good street / strip motor, if you are willing to lay out for heads, cams and a forged bottom end. The long stroke really flattens out the torque curve and there are a few builds out there making 300+ ft lbs from under 2000 to over 6000 RPM.
#7
Im thinking about doing a 5.4 swap next year. I read some forums & it seems fairly doable. Im estimating around $2000 & thats including the HPS intake manifold & a good used 5.4 2V SOHC Longblock. Im only interested in the 2V engine because I think that would be the easiest to find & fit on my car.
Would it be worth to swap a 5.4 2V engine on my Mustang GT? Can anyone post 5.4 Swap Dyno results & their mods? Quarter mile times?
Would it be better to swap a 4.6 4V from a Mark VIII?
Would it be worth to swap a 5.4 2V engine on my Mustang GT? Can anyone post 5.4 Swap Dyno results & their mods? Quarter mile times?
Would it be better to swap a 4.6 4V from a Mark VIII?
Thread
Thread Starter
Forum
Replies
Last Post
Matt's 95 Stang
5.0L (1979-1995) Mustang
2
10-05-2015 07:16 AM