View Full Version : LLY: uh oh need help
02-27-2009, 06:48 PM
ok so i pulled an lb7 from a 2003 c4500 put in a 2006 lly which i have the entire cab and harness problem is the engine harness is different on the c5500 doesn't run my engine but can i change the ecm and engine harness from my lly truck and mae it run? 2nd question is the ecm different in the classic truck compared to c5500 any thoughts???
02-28-2009, 05:52 PM
no help here guys?
Big Block 88
02-28-2009, 06:00 PM
You are gonna have to do some work to make an LB7 motor work in a truck that ran an LLY completely different animal. I would slap the LLY top end onto the LB7 and call it good.
03-01-2009, 04:51 AM
On the LLY, the injectors are a different style, and different voltage, and it has a computer controlled turbo charger. You are going to need the ECM and harness. You will also need to disable the VATS system if it exists with EFILive or a Tech2.
Rick D Lance has done this IIRC, he's a member here. Shoot him a PM.
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