Engine swap

[davidjd2409]

Just curious if anyone had tried to swap the 4.0 to a 5.6 my engine died on me and has internal parts that busted need a new one and was thinking what'd the best route to go? swap for a 5.6 or put a used one or remanufactured one, and turbo the 4.0

[disallow]

what year pathy do you have?

Would also involve a ratio change in the rear end, and front if 4wd.

[smj999smj]

You'd be better off replacing the VQ40DE. If you want a V8, it would be cheaper and a lot easier to buy an R51 that come with the V8. To swap in the V8, you would need a whole lot more than just the engine, including the ECM and wiring harness.

[Kestral]

Just wondering anyone know how much a reman VQ40DE cost?

[skinny2]

Just wondering anyone know how much a reman VQ40DE cost?

I dunno, but considering how cheap you can buy a salvaged Pathfinder....if I decided to keep this thing forever I may just go buy one. I've seen low mileage '11-'12 models sell pretty cheap. Besides body damage and blow airbags the power train was likely fine.

[NmexMAX]

what year pathy do you have?

Would also involve a ratio change in the rear end, and front if 4wd.

Not necessarily a ratio change, but certainly beefing it up with a V8 units from either an Armada, Titan, or V8 R51.

[skinny2]

There's been some V8 guys swap in a V6 differential to get a taller gears. I don't think they've had any strength problems.

[NmexMAX]

There's been some V8 guys swap in a V6 differential to get a taller gears. I don't think they've had any strength problems.

Not sure about that, it be a lot easier to just swap an Armada(Big Tow) or QX56 diff (any) to retain the beefier ring gear/diff assembly and still get the 3.36 ratio. That's what I did and everyone else I know. Haven't heard it the other way around.

[skinny2]

Yeah, my memory was way off on that. They were swapping Armada gears. It was just the ratios that were the same between the Armada and V6 PF. I wouldn't mind driving a PF with this mod. When I was buying mine, the V8 didn't feel any stronger than the V6. Actually less gutsy at passing which is important to me with the roads I drive.