Gen 3 or 4
TECH Senior Member
Joined: Jun 2016
Posts: 22,291
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From: Central Cal.
That engine is an LQ4. No HD Gen IV 6.0's were made before 07.
Last edited by G Atsma; Jul 12, 2024 at 04:56 PM.
My 05 Tahoe was a Gen III 5.3 with Gen IV rods so I'm in agreement but all one has to do is to look at the crank sensor or pull it and look at the reluctor ring. Also Gen III's have the cam sensor on the back of the block behind the intake manifold and knock sensors underneath the manifold.
My 05 Tahoe was a Gen III 5.3 with Gen IV rods so I'm in agreement but all one has to do is to look at the crank sensor or pull it and look at the reluctor ring. Also Gen III's have the cam sensor on the back of the block behind the intake manifold and knock sensors underneath the manifold.
I have a 2006 6.0l LQ4 in my MCSS, pulled it from a wrecked 3/4 ton Van. It's what's loosely called the Gen III.5
It is Gen III all day, 24X Engine with black Crank Sensor, Cam Sensor at the top back left and Knock Sensors in the Valley, but has as follows:
Gen IV Rods
1X Cam Gear
Threaded & Tapped holes for the Timing Chain Dampener
Threaded & Tapped holes on both sides of the Block for Gen IV Knock Sensors
All that was in it when I got it and opened it up to look it over and build it up.
