Mystery Gen 4 Engine
#1
Mystery Gen 4 Engine
A shop asked me to disable DOD on a customers 12 GMC originally with a 5.3L, VVT, and DOD. Their customer brought in a used engine for them to install in the truck. Their customer knew next to nothing about what he had and said the engine was given to him. It was definitely a 58X Gen IV, cast iron block, 243 heads, VVT, but no DOD. Standard non DOD valley cover looked like it had never been off so they don't think there was ever a DOD delete done on this. Any idea what this might have come out of? I'm thinking it might be a 6.0L with VVT but no DOD.
#2
TECH Fanatic
iTrader: (16)
all the Iron Gen IV 6.0's have square port heads....unless the heads have been swapped its a 4.8/5.3....if the engine hasn't been installed yet it will say on the front and back of the block if its a 6.0 or 4.8/5.3...also there is a part number on the block on the rear of the engine just below the passenger side head...if its a 6.0 it will be 12576181
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#10
TECH Enthusiast