I have a 2007 avalanche with a lmg 5.3. Water got into the engine, and that was it for that motor. I bought a 2010 lmg 5.3 to replace it. Didn't see that it had vvt until it was being installed. I used the old harness with the new motor. The new harness won't connect to the fuse box and transmission. Everything connected until I got to the camshaft position sensor, which is the last connection. Can I change the cam gear, use the old cover and use my old computer. Would that delete the vvt without changing the cam

 

The cams are different. VVT cams are advanced in static state, then are retarded in varying amounts by the special sprocket used.

 

Any idea what the static state ICL/LSA is?

 

Someone recently posted stock cam specs somewhere else on these forums.
They might POSSIBLY show the specs you mention, but not certain....
EDIT- In Gen III Internal; "Factory LS Cam Specs"

 

Cam would be 196/201 116+2 (as machined): https://www.onallcylinders.com/2018/...am-specs-more/

A while back, I tried to determine how the VVT was setup for this engines. Anyone who has more solid understanding on this feel free to jump in.

I believe the phaser is advanced 7 crankshaft , and this supposedly results 3.5 advance at the camshaft (?).
Edit: Found the article stating the park position of the camshaft: https://www.underhoodservice.com/gm-...flow-pressure/

And this seems to track, because IIRC (been awhile), if you look at the factory VVT table it starts advancing around 4k rpm and reaches roughly 7* retard right at rated peak power rpm (basically making it 0*). So if the above is accurate, then total you'd have 5.5* cam advance.

Tossing it into the 'ole @Summitracing Cam Timing Calculator (courtesy of CamMotion): https://www.summitracing.com/newsand...ing-calculator nets a 28.5* intake valve closure. This would be pretty early, and likely hinder it's ability to build power especially above 5k rpm given it's duration and lift. Also the VVE tables would be incorrect.

I don't think running it that way would cause any mechanical damage, but it'd probably not drive very well. I wouldn't recommend it.