2006 Grand cherokee 5.7 engine swap

Asked by Guru5TV8G Jan 03, 2018 at 08:52 AM about the 2006 Jeep Grand Cherokee Limited

Question type: Maintenance & Repair

I'm looking into buying a 2006 5.7 grand Cherokee
limited with a blown engine and I have a 2005 3.7
grand and I'm wondering if the 2005 3.7 engine can
go in the 2006 without major issues. Only
difference I found was the 2005 has a quadra Trac
1 and the 2006 has the quadra Trac 2. Both 5
speeds.
Any info is appreciated

1 Answer

2,720

You will need the ECU from the 3.7 to control the shift points and fuel injection timing. The 3.7 uses a different transmission than the 5.7. The 5.7 uses the 545RFE transmission. I personally wouldn't do the swap. More trouble than it's worth.

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