So I stripped down the 07 sohc engine yesterday, grabbing anything I might need to add to the 5.0 conversion. I have the complete engine wiring harness, some sensors and some of the EVAC system tubes.
If I am to compare a 2007 SOHC engine and 5r55e wiring harness to a lets say 1998 SOHC engine and 5r55e wiring harness lets note the differences:
1. One water temp sensor instead of two. I have been reading the 07 instrument cluster uses a bus communications network to get signals for the gauges. I am not sure this is true for the coolant and oil sensors, they look very similar to the earlier models.....
I should be able to plumb these sensors into my 5.0 as needed if needed.

2. PCV valve has a sensor inside it,
3. injector connections are different,
4. 7 wire MAS vs 5 wire
5. extra OSS sensor in the transmission tail housing

Otherwise I do not see any other other major differences, but I will keep looking.

What I am getting at is a 98 5.0L drivetrain is not much different then the V6 and all of these trucks from 95-04 use a similar c115 42 pin connector.
The V8 has two additional injectors, 8 coil pack instead of 6, and it uses a cam synchro mounted on the cam instead of the valve cover mounted sensor. Not far off from the wiring that is already there....

Wiring this drivetrain conversion should be just like the earlier models (01-03), only differences are in the ABS brake module, fuel pump driver module and of course the PATS system. the airbag/restraint computer and 4x4 controller are stand alone units, as is the power distribution and all body functions. No gem module to deal with is always a PLUS.

I will try to retain the 07 abs system, bypass the FPDM and I already ditches the PATS and corresponding PCM.
I have at least two wiring directions I can take to make this 07 either think it is a 98 or stay 07 and just talk to the 98 drivetrain (I prefer the latter when I can pull it off). Once the 07 wiring book gets here I will know more. However I suspect it will end up very similar to those who have gone before me like SVTranger and others who have converted 02-04 trac and sports to the 302, this 07 is very similar to those trucks.

Thanks for listening to my rambling. I will try to keep this thread short and sweet with lots of pics...but the wiring must be talked about if others plan to follow along with what I am doing and why.

Last edited on Wed Aug 7th, 2019 06:54 pm by 410customs