2014 hemi 5.7 replacing a 318 in a 1977 power wagon 4X4 ?

Physically bolting it in is fairly easy. The oil pan on your motor will fit your chassis. You can make your own mounts if you are handy, or go to Street and Performance ( http://www.hotrodlane.cc/ ) for a nice set of mounts that will need spacers to raise the motor about 1.5" - 2". They use the 77 insulators your truck came with. If you want to leave the 727 mount stock, I do not know if the S&P mounts will still line up ( I am using a non stock transmission). (I did an early test fit with the hemi bolted to a 727 which was in the factory mount. I kinda recall the engine being really close to the firewall, but did not have thier mounts at the time.) Exhaust manifolds- easy way is Jeep Grand Cherokee 5.7 manifolds. Have also heard the S&P block huggers fit well, but have no experience with those. I used the Jeep SRT8 factory headers. They needed some frame clearancing in spots, but nothing more than rolling the edge up just like the factory did forward of the suspension. Ram manifolds, like mentioned, are problematic. That being said- I have seen a truck that used them. As well as one that used one Jeep manifold and one Ram manifold. The extreme 90* the exhaust has to make at the firewall is not ideal but sometimes you gotta do what you gotta do to make it work. Please keep in mind these are all 2WD truck firsthand observations.



Electronics for your VVT motor are another story. I inquired about doing the same thing and using the factory ECU and was told by Modern Muscle it is not possible. This is a qoute from them...

" The engine year is not the problem to tune it is the ECU.

If you are looking to do a New Gen swap DO NOT GET THE ECU THAT CAME WITH THE CAR IT WILL NOT WORK! We do offer a Mopar ECU that does and can be custom flashed and tuned for whatever you need it to do so please give us a call we will get you in the right direction."

Another option is Megasquirt. They now have VVT capability, but the active runner ( if you have it ) is still not worked out, and they require a cable operated throttle body among a few other things. The Hotwireauto option- to me- never really has been an option because you have to disassemble the motor to put in all the GM required control parts. Not something I would want to do with a 75 mile engine.