10 3.7 to 08 3.7

So I ended up saying screw it, figured if the stud broke off I'd just extract it since it'd be easy to get to once the motors out. Sent it at 1400ft lbs and it came out without breaking on either truck lol guess I'm just use to ford flange bolts. Now just down to the mounts, or at least that's all I see and can think of other than the 2 lines running behind the compressor, plan on lifting the motor a little bit then getting those since they seem to be in a worse spot than the starter. But hoping to get my brother's cherry picker tonight and at least get the motor out of the '10 tonight so then I can just pull the 08 motor then spin the cherry picker around and then go Gung ho on hooking everything up tomorrow. Since this has already taken me 2 more days than I was planning. I just remembered I never got those harness pics but I mean either way I planned on using the '10 computer and harness just because it's less work. Although while unplugging stuff today I realized the lower o2 has a different plug than the 08 or at least I'm pretty sure so. Could've just been the manufacturer but the 08s was black and green and the 10s was grey and blue but I mean oh well I can steal a o2. More or less saying that for anyone whose doing this and doesn't want a code.

Well I kept all of the 10s wiring and modules only 08 part in the 10 is the motor and soon enough the trans. But I was just gonna switch out the computer blocks up on the firewall since it was just a few clips and then the harnesses and coolant reservoir. I counted pins they got the same amount and orientation was the only reason why I was gonna bother with that. It's not like I really care but if I ever do go to sell the truck, the 102k would help since it reads 242k right now. I know that is probably still considered rolling back miles but honestly I'll deal with it then, I didn't document this motor swap very well so other than that computer reading a different vin and miles i dont think a dealer would even believe the motor swap. Also more about the truck: poured fluids in and got the fan in, then cranked it and the truck fired right up, sounds like this manifold has a exhaust leak though lmao. The TPMS seems to be a little off but I'm hoping that's just the computer tryna learn the new motor. If I blip the throttle it holds 1.2k Rs after it's warmed up and takes a second to come down but guess that could also be a vacuum leak, I don't know I'll probably go do a little 30min drive with it before I dig into it anymore but no limp mode, no check engine light or anything like that. Feeling like I can actually relax now.

Okay, a bit more about the mileage. Yes, if you were to replace the '10 BCM with the one from the '08, the mileage would then be 102K. If you did that, however, the mileage in the Cluster would not roll back to 102K. So you wouldn't accomplish what you are thinking. The mileage in the Cluster would not move until the memory in the '08 BCM got to 242k. Besides that, you would have to have the '08 BCM programmed for the '10 truck and then, if you wanted the lower mileage reading in the Cluster, you would have to change the Cluster to one with a reading lower than 102k. The mileage in a Cluster only moves forward, never back. There's a reason for that.

Just to clarify, You don't want to be switching out the 'computer blocks' (ECM/TCM) on the firewall. The '10 truck has a Fuel Pump Control Module installed and the '08 does not. The truck will not run with the '08 ECM. The module that has the mileage memory is the BCM. The BCM is located inside the cab, behind the right kick panel.

You might not be able to correct the exhaust leak without putting the '08 manifold on the '08 engine. Remember I mentioned that the exhaust ports appeared to be different? They might actually be so different that the manifold won't seal properly.