Skip the auto shop - Our mechanics make house calls

Q: 4.7 to 5.7 hemi swap

asked by on

Hi so I wanna do a 4.7 to 5.7 hemi swap in my 06 ram 1500. I have a 05 1500 donor truck with the hemi and everything else. So I have the mechanical things figured out I just need to know about the computer and electrical things. Am I going to need to change the computers and then change a bunch of wires?
My car has an automatic transmission.

You will need to use the computer from the 5.7 to make it operate correctly. You may be able to use the same wiring harness if you find a pinout diagram from both engine control modules and make sure all the wires are in the proper location in the connector. There may be an adapter plug available. Check with Painless Performance, they may have it.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: smog test incomplete.

If your Check Engine Light is not illuminated, there is not a fault with the system. Before a vehicle can pass emissions testing, certain readiness monitors must be completed. One of which is the heater O2 monitor. The vehicle will...

Q: Car door is not getting opened

Hello and thank you for writing in. Check to see if the door will open with unlocking the door with the key in the door handle. If it is the driver or front passenger door it is the rear door...

Q: P0443

Hi. There are evaporative hoses that run from the purge valve to the charcoal canister that could also have a leak in them causing the code p0443 to still be there. There also could be a problem with the charcoal...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...