5.3 Swap questions
#1
5.3 Swap questions
I am swapping a 5.3 LM4 & T56 into a Honda S2000
The junkyards around me have a few of these engines complete but without a wiring harness/ECU
Basically what I am wondering is if I can use a F-Body LS1 wiring harness/ecu combo (flashed of course) to run my setup? I am using all of the Fbody accessories/intake.
What troubles can I expect or what else would I need?
Im ready to pull the trigger on the engine but I want to be sure of this.
Thank you and sorry if this is a dumb question im new to this stuff
The junkyards around me have a few of these engines complete but without a wiring harness/ECU
Basically what I am wondering is if I can use a F-Body LS1 wiring harness/ecu combo (flashed of course) to run my setup? I am using all of the Fbody accessories/intake.
What troubles can I expect or what else would I need?
Im ready to pull the trigger on the engine but I want to be sure of this.
Thank you and sorry if this is a dumb question im new to this stuff
#2
PSI has a harness for you 500$ plug and play and you know it works, plus free tech support. Also they can provide you with a flashed ecu for 200 for your exact setup, and start up. So 700 dollars and you get no confusion worth it to me. I should probably go introduce my self now lol. Dont forget about a chassis harness aka head lights and what not you may need to look into that as well.
#6
yeah a new rear is definitely on the list but i want to get it up and running first with the stock rear
so what I am gathering is that as long as you match the harness and ECU you are fine?
Also the only difference between the two are the injector clips. Nothing else?
so what I am gathering is that as long as you match the harness and ECU you are fine?
Also the only difference between the two are the injector clips. Nothing else?
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#9
so it seems one of the junkyards lied to me. the engine has a harness but no ecu. would it be better to just source an ecu and switch over the injector connectors or go fbody for everything
#10
I highly doubt a truck intake would fit under your hood anyway. If you are not modding your own truck harness to ls1 style, that doesn't matter either. A ls1 harness has everything you need and a bunch of things you probably don't, but is easier to convert to stand alone since everything is there. You can get a PCM for about 200 already flashed to work with the stand alone Ls1 harness. Or you can source them separately but costs about the same.
#11
Okay so the truck engine came with a complete engine harness in great condition so I would like to use it if possible. Trouble is it did not come with an ECU
From my understanding all I have to change is the injector connectors.. this is no problem. Does anyone know what type they are?
So I have a few questions
1) Is this the ECU I need? http://www.ebay.com/itm/2004-BUICK-RAINIER-Engine-Brain-Box-CONTROL-UNIT-ECM-ECU-5-3L-next-to-air-box-/390762039554?pt=Motors_Car_Truck_Parts_Accessories&hash=item5afb3b8902&vxp=mtr
2) Will I need any T56 specific wiring? Where would be a good place to source this
3) Are there any other issues I am going to run into?
From my understanding all I have to change is the injector connectors.. this is no problem. Does anyone know what type they are?
So I have a few questions
1) Is this the ECU I need? http://www.ebay.com/itm/2004-BUICK-RAINIER-Engine-Brain-Box-CONTROL-UNIT-ECM-ECU-5-3L-next-to-air-box-/390762039554?pt=Motors_Car_Truck_Parts_Accessories&hash=item5afb3b8902&vxp=mtr
2) Will I need any T56 specific wiring? Where would be a good place to source this
3) Are there any other issues I am going to run into?
#12
you can skip down to wiring
http://www.ls1.com/forums/f8/how-4l6...f-body-161462/
pinouts and stand alone conversion
http://www.lt1swap.com/wiringharness.htm
http://www.ls1.com/forums/f8/how-4l6...f-body-161462/
pinouts and stand alone conversion
http://www.lt1swap.com/wiringharness.htm
#13
Thanks! Wow theres so much information out there. So I can use the ECU I listed?
Also where is a good place to source the injector connectors
Thanks
Also where is a good place to source the injector connectors
Thanks
Last edited by recliner15; 09-18-2014 at 09:29 AM.
#14
The PCM listed is for drive by wire. Most Ls1 are drive by cable except Corvette. The link I sent you will also tell you The pcm needed for drive by cable and if a newer pcm will work. Look for hardware number and service number.
http://www.lt1swap.com/cable_conversion.htm
http://www.lt1swap.com/cable_conversion.htm
#15
EV1 Connectors
You can use these if you don't feel like wiring connectors
http://www.summitracing.com/parts/fms-m-14464-a8
You can use these if you don't feel like wiring connectors
http://www.summitracing.com/parts/fms-m-14464-a8
#17
There are numerous PCM's you can use. I went with the famous 411 in my 240sx FYI. Had it flashed by Wiring Specialties for a great price since I am also getting my wiring harness made up by the them.
My setup:
05 LM7
LS6 Intake with Drive-By-Cable conversion (truck intake will not work with most of our import hoods)
LS6 OEM injectors on an Ebay Fuel Rail
CTS-V Accessory Drive (frees up about 3 inches of space between rad and balancer)
411 PCM reflashed
Pretty generic setup. I dont know a damn thing about wiring so I left it up to the pros. A few local guys made their own harness into their imports but I just felt more warm and fuzzy having the pros make it for me.
My setup:
05 LM7
LS6 Intake with Drive-By-Cable conversion (truck intake will not work with most of our import hoods)
LS6 OEM injectors on an Ebay Fuel Rail
CTS-V Accessory Drive (frees up about 3 inches of space between rad and balancer)
411 PCM reflashed
Pretty generic setup. I dont know a damn thing about wiring so I left it up to the pros. A few local guys made their own harness into their imports but I just felt more warm and fuzzy having the pros make it for me.
#19
When I modded my 2005 L33 drive by wire to drive by cable. I made sure not to cut any of the unpinned wires from the Blue/green connector. That way I had a nice long tps and Iac harness. I use the oil pressure switch connector for the tps, but had to source the iac connector from the junkyard($2). Any wire connections I soldered(there is debate on which is best on this forum). I have never had issues with soldered joints though. Once I had all unused wires(emission stuff) removed, then I converted to drive by cable. That way there was no confusion what was left to do. I followed the lt1swap.com pinouts and used the pictures on the facebook step by step to complete the harness with no issues.