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Generation III Internal Engine
Lq4 swap with SS2 cam

Generation III Internal Engine 1997-2006 LS1 | LS6

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Lq4 swap with SS2 cam

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Old

Mar 11, 2023 | 10:32 PM

#1

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Lq4 swap with SS2 cam

I’m looking to purchase a 2000 Silverado RCSB with a swapped lq4. The guy swapped out the 317 heads and installed 706 heads and a sloppy stage 2. Truck has long tubes and is throwing a p1153 Code. Could be it just needs new 02 sensor. It does have a tune and runs decent but I noticed it almost has a sputter during WOT runs. Punch it at 3k and it goes but almost like it has a slight miss across the rpm range. They screwed up the aftermarket valve covers and some coils aren’t mounted. Not sure if there is a grounding issue with the coils that could be causing this. It has a built 4l60 with 3600 stall and 4.10 gears with a locker. It’s not a bad price just not wanting a can of worms.

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Mar 12, 2023 | 10:08 AM

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P1153 indicates a faulty O2 sensor.
It is Bank 2 Sensor 1. Replace it and it should be good.

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Mar 12, 2023 | 10:31 AM

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That’s the one it is. I’ve heard of people using rear corvette sensors as they heat up quicker.

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Mar 12, 2023 | 12:43 PM

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Just use a quality (gennie GM...) sensor for the intended purpose and it will be fine

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Mar 12, 2023 | 03:50 PM

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Coils aren't grounded thru their mounts to the valve cover.

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