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Old 07-19-2013, 08:03 PM
ironchef2011's Avatar
ironchef2011 ironchef2011 is offline
Dodge Ram Forum Senior Member
Join Date: Aug 2011
Location: Orange County, NY
Posts: 456
Gender: Male
Vehicle: 2012 R/T
Trim Level: R/T
Color: Black
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 5
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Default L&M R/T 392- Stage One

Just thought I'd share my build of dropping a 392 Challenger non MDS crate motor into my 2012 R/T. First off, huge props to Chris at Modern Muscle for the motor, Johan at Diablosport for the tuning and Mike at L&M for the installation and patience!

Now there are many ways to do a motor swap, but I wanted as seamless and stealth a look as possible. I wanted to retain the mechanical fan and I preferred the stock airbox location, instead of just stuffing a tube down by the fuse box due to the revised throttle body location. So long story short, I essentially purchased a 392 long block. Here's the list of parts swapped over from my Ram onto the new engine:
  • Timing Cover (Needed for fan)
  • Thermostat Housing (No water cooling option due to fitment)
  • Water Pump and Mechanical Clutch Fan
  • Wiring Harness
  • Oil Pan (Challenger has a front pickup and pan, won't work on Rams)
  • Oil Pickup
  • Dipstick
  • R/T Torque Converter
  • JBA Shorty Headers (SRT's won't fit)
  • Intake Manifold and Throttle Body (Challenger one will fit, but requires custom air filter)

Here's a list of upgrades we put with the motor swap:
  • 180 Thermostat
  • 87mm Throttle Body
  • 392 Fuel Injectors
  • HD Transmission Cooler with SPAL Fan
  • L&M 545RFE Transmission
  • Deeper Transmission Pan (2 more quarts of fluid)

Here's some pics of the empty engine bay and trans cooling parts.

2012 R/T 392

Last edited by ironchef2011; 07-19-2013 at 08:10 PM.
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