another is300 ls swap
Thread Starter
Staging Lane
Joined: Feb 2015
Posts: 63
Likes: 0
From: San tan valley az
another is300 ls swap putting in a lq4 6.0,4l60e,hopping for around 450hp to the wheels.getting all the parts together.i know parish8 did it with a auto.still need some help with harness as far as the fuel pump,a/c and rad fan.
What specific questions do you have in regards to a harness? Our standalone harness would include attachments for the three items you listed out.
http://www.painlessperformance.com/webcat/60217
http://www.painlessperformance.com/webcat/60217
Thread Starter
Staging Lane
Joined: Feb 2015
Posts: 63
Likes: 0
From: San tan valley az
Harness Can I run the lexus a/c and fuel pump relay with the ls harness,I going to keep the lexus pcm to run some systems I know the radiator has a sensor that controls the fans.the lexus has a auto do I need to jump a wire in the harness for the neutral safety switch.
wire is to be spliced into the circuit from the AC switch to the AC compressor.
For the fuel pump you could just take the 12v lead and power your relay with it.
You can control the fans via the LS harness. It has outputs to trigger fan relays based off of the coolant temp sensor.
TECH Apprentice
Joined: May 2006
Posts: 311
Likes: 3
From: Omaha,Ne
We, had to relocate the factory lexus pcm under the drivers seat, and lengthen a bunch of wires to get the dash to read normal.
You should be able to find all that Jim(parish) posted up on the build here, somewhere.
We put a smaller(physicallly) battery in it, to give us room to mount the factory pcm in the engine compartment.
We had to flip the shifter linkage from the pass, side to the drivers side to get teh factory auto shifter, to run the 4l60e.
The gas pedal was a pain in the ***, if I remember correctly, it has been a few years, ago.
It didn't have air conditioning, there was some reason why, and can;t remeber now, but it made things alot more complex. It had nothing to do with the wiring part of it tho, I'm sure of that.
You should be able to find all that Jim(parish) posted up on the build here, somewhere.
We put a smaller(physicallly) battery in it, to give us room to mount the factory pcm in the engine compartment.
We had to flip the shifter linkage from the pass, side to the drivers side to get teh factory auto shifter, to run the 4l60e.
The gas pedal was a pain in the ***, if I remember correctly, it has been a few years, ago.
It didn't have air conditioning, there was some reason why, and can;t remeber now, but it made things alot more complex. It had nothing to do with the wiring part of it tho, I'm sure of that.
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Staging Lane
Joined: Feb 2015
Posts: 63
Likes: 0
From: San tan valley az
is300 also anybody out there,know what stock manifolds will fit on this swap,cant aford headers at this time.also what would be a good cam 3k stall,built 4l60e
Last edited by Lsxis300; Feb 13, 2015 at 10:07 AM.
Teching In
Joined: Feb 2010
Posts: 6
Likes: 0
From: Jackson, MS
DLOVE, you posted a link for the painless harness. I don't see anywhere where it says the harness works with a 4L60E. Did I miss it?
I just pulled an LM7 w/4L60E, and am working on my swap as well.
I just pulled an LM7 w/4L60E, and am working on my swap as well.
Thread Starter
Staging Lane
Joined: Feb 2015
Posts: 63
Likes: 0
From: San tan valley az
Here are some pics,100k motor out of 01 silverado. Everything was in good shape,but I'm going to put new bearings and rings.i got some gto mounts for nothing I think I can make them work.Im trying to do this build as cheap as possible.it going in this,my 02 is300 daily driver,I'm getting everything together before I pull the motor.
Thread Starter
Staging Lane
Joined: Feb 2015
Posts: 63
Likes: 0
From: San tan valley az
found a good deal on a cam,lunati 224/230 580 lift 114lsa.$150 should go good with a 6.0 im using a set off 799 heads figure compression around 11 with a set of lq9 flat tops.
Thread Starter
Staging Lane
Joined: Feb 2015
Posts: 63
Likes: 0
From: San tan valley az
Lsxis300 Have not had a chance to do any work on the motor,I order the bearings and rings.went ahead and shaved and smooth out the truck intake i read they flow as good as a ls6,might not fit under the hood,if so I sell it.
Thread Starter
Staging Lane
Joined: Feb 2015
Posts: 63
Likes: 0
From: San tan valley az
From lsxis300 to lsrx8 
Here it is
Last edited by Lsxis300; Apr 19, 2015 at 07:17 PM.
Thread Starter
Staging Lane
Joined: Feb 2015
Posts: 63
Likes: 0
From: San tan valley az
Lsrx8 Well got some stuff done,sold the motor for 500,still have the trans.wired in my own mil light in the instrument pnl,bought a mustang 8.8 irs to swap in later on.going to fab some mounts and still need to rebuild the lq9.