V8 Engines Exported Worldwide What Are You Looking For?
gen 3 hemi
Brief Overview
The new Gen 3 Hemi was engines were first introduced in 2003 in only 5.7L or 345 CID.
Over the next 20 years it has been continuously improved.
There were design problems discovered in these engines that Chrysler wanted to solve.
As a result the "Eagle" version was introduced in 2009 having far better cylinder heads making 45 more horsepower and more reliable intake seats.
Therefore avoid pre 2009 engines.
I have a 2006 Dodge Ram with one of the older engines.
It runs fine, no issues, but it is not very powerful.
It will not spin the tires very far.
A post 2010 Rams will smoke the tires twice as far.
The Mopar started offering larger displacement engines.
The 6.1, 6.2, and 6.4L
The 6.1L/372CID has large bore 4.055 inches compared to the 5.7Ls 3.917"
Both have the same 3.580" stroke.
The 6.2L/378CID has a 4.090" bore, the same 3.580" stroke, AND a supercharger making it a Hellcat.
The 6.4l/392CID bore is 4.090" and a 3.720" stroke crank.
There is also a 426 CID crate engine 4.125" X 4.00" stroke.
I'm told Gen 3 Hemi engine swaps occur in NZ, but nowhere near as LS swaps.What you do need to know is that you can't take the factor ECU from the vehicle and expect it to run the engine.
You should replace it with either a Mopar Hemi swap ECU from Mopar, or an aftermarket one.
The Mopar ECU nor an aftermarket ECU WILL NOT control an 8-speed automatic transmission found behind the later model engines.To do that you will need a second transmission computer.
Further, if it is a swap into an older car, the floor needs to be must and a larger transmission tunnel installed as the ZL transmission are much larger in diameter.And finally for swaps you will probably need a center sump oil pan.
You might want to change the camshaft.
The later model engines have great camshafts in them.
The 5.7s have an advertised duration of 260/268 or 212/218 @ .050" lift on a 112 LSA for pre 2010 engines and 114 post.
The 6.4L enging advertised 286/288 or 236/238 on 113.
That is plenty of duration to make 500HP @ 6000RPM.
Plus it has Variable Valve Timing, VVT.
While many people think they should remove the VVT, why?
It makes a wider power curve and is "mostly" reliable.
However, for a performance car being modified to make more power the VVT becomes unnecessary.
Preping a 392 to go to Auckland.
Here is a $14000NZ 2020 392 engine from a Challenger.
I first removed the transmission.
I will replace it with a 3 speed A727 Torqueflite..
Then the oil pan which I will replace with a Holley center sump pan.With the factory VVT lifters we use 0W-40 oil.