monkey1boo
New LVC Member
Im interested in putting the 04 engine in to gain the additional 30 hp.Is this going to present any problems if I swap the engine,computer,and wiring harness? Should I ditch the hydraulic fan?
04 to 00 LS engine swap
- Thread starter monkey1boo
- Start date
joegr
Dedicated LVC Member
You'll have to swap the cluster too, just to be able to start it.
You'll have to swap the REM to be able to get the fuel pump to run.
Do you want to be able to drive it? If so, the transmission will have to be swapped, and so will the ABS module. (Not just for ABS braking, but also for the transmission to work, speed signal comes from the ABS.)
Do you want AC and/or heat? If so, you'll have to swap the climate control.
You'll almost certainly have to swap the FEM.
You'll have to swap the fan, the gen II PCM won't control the hydraulic one.
If you want to be able to control the rear windows from the driver's door or to have the locks work, you'll have to swap the driver's door module. (The gen I DDM won't talk to the gen II REM that controls the rear windows.)
A better and less expensive way to accomplish all this is to sell your gen I and buy a gen II.
You'll have to swap the REM to be able to get the fuel pump to run.
Do you want to be able to drive it? If so, the transmission will have to be swapped, and so will the ABS module. (Not just for ABS braking, but also for the transmission to work, speed signal comes from the ABS.)
Do you want AC and/or heat? If so, you'll have to swap the climate control.
You'll almost certainly have to swap the FEM.
You'll have to swap the fan, the gen II PCM won't control the hydraulic one.
If you want to be able to control the rear windows from the driver's door or to have the locks work, you'll have to swap the driver's door module. (The gen I DDM won't talk to the gen II REM that controls the rear windows.)
A better and less expensive way to accomplish all this is to sell your gen I and buy a gen II.
mlara1129
Dedicated LVC Member
oddball
Dedicated LVC Member
Only official (power related) difference is the VVT. Cams might be different, too. You should totally do the research to swap the VVT onto the old engine.
Or just buy a gen 2.
joegr
Dedicated LVC Member
The problem is that the old PCM won't run the VCT solenoids, so swapping that in wouldn't do any good without swapping in the new PCM. Putting the new PCM in would require all the electronic modules to be changed so that they could communicate with the PCM. The PCM has to talk to the REM to operate the fuel pump. It has to talk to the PATS in the cluster before it will even try to start (security). The new PCM won't control the old transmission, so that has to be changed to. The new PCM won't know when to shift because it won't know how fast the car is going unless the ABS module is changed too. And so on...
oddball
Dedicated LVC Member
Where's your faith in perseverance? Surely someone could bolt those suckers on, make their own VVT controller and reap all kinds of benefit. Sure, they might poke out the front of the valve covers a bit, but some coffee cans and duct tape would fix that!
(sometimes the sarcasm is so thick it sounds genuine)
As a side note, I thought I read somewhere that the LS Gen 2 used mechanical VVTs with little or no control - maybe oil pressure driven? - while later Jag versions had electronic computer control. Might easily be confused there, though.
joegr
Dedicated LVC Member
My understanding...
The gen II LS uses continuously variable intake valve timing that is PCM controlled for each bank. Each bank has a VCT solenoid that controls oil pressure that in turn controls the intake valve timing. The solenoids are PWM'd to accomplish variable control.
The gen II Jag used stepped intake and exhaust valve timing control that is PCM controlled. The Jag can control both the intake and exhaust valve timing, but only gets two settings for each. I assume that the Jag system is better since they make more horsepower, but then they also have more displacement and some other changes.
Quik LS
Dedicated LVC Member
+1
and remember - all the computers/controllers are connect via CAN on the 03+ not ODBII - so likely the all need swapping and includes the wiring....
even silly things like the e-brake may be an issue if not swapped.
big big job.
and remember - all the computers/controllers are connect via CAN on the 03+ not ODBII - so likely the all need swapping and includes the wiring....
even silly things like the e-brake may be an issue if not swapped.
big big job.
FASTLLS
Dedicated LVC Member
Could there be a tune wirtten to overcome just a head swap? Just a thought..
Quik LS
Dedicated LVC Member
tunes - for the most part - are simply changing spark advance and fuel delivery parameters in a lookup table used when the car is in open loop mode and cannot use the O2 sensors to determine the AFR - they cannot rewrite lines of code to introduce new features that aren't part of the base code.
The Gen1 PCM does not have the input or output signals to interact with the VVT - solenoids and sensors.
The Gen1 PCM does not have the input or output signals to interact with the VVT - solenoids and sensors.
The Jaguaristas claim that the LS doesn't use infinitely-variable (well, more or less infinitely-variable) cam timing, but that, as you noted, is not correct. My understanding was that both the LS/T-Bird and the S-Type (of the same vintage, with VCT) use the same infinitely-variable cam timing system, but Jag uses it on both cams. It is also my understanding that this system originated in Dearborn, again, contrary to the claims of the Jaguaristas.
1LoudLS
Dedicated LVC Member
for far lees money and a year less work, you could just put a bottle on the car and get way more than 30 extra HP, or you could buy the LLSOC blower kit and still make far more power while actually finishing up some thing that is possible.
i would also think that the blower would still be cheaper than finding a motor let alone all the other parts, to get the parts needed for the job you would pretty much have to but a 2nd gen anyway, so why buy a 2nd gen just to gut it and put every think into the 1st gen.
i would also think that the blower would still be cheaper than finding a motor let alone all the other parts, to get the parts needed for the job you would pretty much have to but a 2nd gen anyway, so why buy a 2nd gen just to gut it and put every think into the 1st gen.
FASTLLS
Dedicated LVC Member
getting too drunk? 
but and think.. jeeze... lol
I gottcha.. blower.. yessss.. lol
but and think.. jeeze... lolI gottcha.. blower.. yessss.. lol