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Gen 3 or gen 4

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Old 03-13-2014, 01:15 PM
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Default Gen 3 or gen 4

I have an LM7 out of an 06 Silverado. It is a 24x engine. Would this be considered a gen 3, or gen IV engine?
Old 03-13-2014, 03:01 PM
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Gen3. The normal giveaways are
1) knock sensors in lifter valley
2) cam sensor in rear of engine
3) 24x crank
4) black crank sensor



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