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And it just gets messier

Haha your right there.
Also to make things even better the vx and vy v6 changed from h to a on the vin.
Can tell you these models had f for the ls1 as well.

VZ - VE V8 Engines 6.0L

2005 -2008 LS2
2006 - 2009 L76
2006 - 2008 L98
2010 - 2013 L77

VY - VE V8 Engines
5.7L
1999 - 2004 LS1
6.0L
2005 -2008 LS2 HSV
2006 - 2009 L76
2006 - 2010 L98
2010 - 2013 L77


2004 - 2009 2009 - 2011 2011 - Present
VY - VE V6 Engines
A 3.8L Ecotec L36
B 3.6L Alloytec V6 175Kw LY7 LLT
N 3.6L Alloytec LPG V6 LY7 LLT
R 3.6L Ecotec Supercharged L67
7 3.6L Alloytec High Output 190Kw LY7 LLT
?? 3.6L Alloytec ?? 210Kw LFX

Ls1 5.7l code is F.
L98 6.0l code is H.
L76 6.0l code is Y.
L77 6.0l code is E.
Supercharged l67 code is S for vs-vt and R for vx-vy.

The VE and later stuff is getting complicated as they changed engines several times. LY7 started of with a VIN code of 7, but then this was also used in later VE LPG vehicles when they moved to SIDI.
Anyway, below is what I've been able to workout from some info I had and a number of ebay searches of vehicles and VIN's.

From VT to VX/WH Model Year 2002
VT/VX/WH – 6H8 VIN’s, 9th Character
VIN…..RPO…..Description
A……….LN3…..3.8L Ecotec
R……….L67…..3.8L Supercharged Ecotec
F……….LS1…..5.7L GenIII V8

2003 Model Year onwards
VY/WH/WK – 6G1 VIN’s, 8th Character
VIN…..RPO…..Description
A……….LN3…..3.8L Ecotec
R……….L67…..3.8L Supercharged Ecotec
F……….LS1…..5.7L GenIII V8

VZ/WL – 6G1 VIN’s, 8th Character
VIN…..RPO…..Description
B……….LE0…..3.6L Alloytec Base
N……….LW2…..3.6L Alloytec LPG
7……….LY7…..3.6L Alloytec Premium
H……….L76…..6.0L GenIV V8
U……….LS2…..6.0L GenIV V8

VE/WM – 6G1 VIN’s, 8th Character
VIN…..RPO…..Description
B……….LE0…..3.6L Alloytec Base
N……….LW2…..3.6L Alloytec LPG
7……….LY7…….3.6L Alloytec Premium
5……….???…..3.0L SIDI Alloytec Base
8……….LFX…….3.6L SIDI Alloytec Premium
Y……….L76……6.0L GenIV V8
H……….L98…..6.0L GenIV V8
U……….LS2…..6.0L GenIV V8
W……….LS3…..6.2L GenIV V8

Aewsome Yoda

Thanks

Thanks for the help fella's.

Well on the way now.

Im pretty sure ls1 was available up to 2006 in the vz. 1mbit pcm, with electronic throttle. Not just up to 2004 as you've got above. My mate bought a 2007 vz crewman and had to find an 07 to get the 6.0. (They trialed it for 6 months in the vz before bringing out the ve, except they discontinued the crewman at that point)

I thought it was 05 had the LS1 and 06 had the 6Ltr .... but it might have been different in the crewman too