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LBM Block and LBM heads

429 Views 25 Replies 5 Participants Last post by  FattCattRed
I need help,can't find anything on my block or heads on my 2005 GTO both have LBM stamped where the GM casting should be I've Google search the hell out of it for the last 5 months and still can't find anything any help would be appreciated thanks guys
LBM Block #VF050040964
LBM head 122332∅A∅2329∅51
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i have a suspicion those are 823 heads.

the np is just a casting mark on the rocker stand plate. it's not part of the head casting.

springs and retainers as well as the rocker trunnions and rocker bolts are all aftermarket. so you probably have an aftermarket cam as well.

intake manifold is obviously not stock. wonder if it's built for boost...?
Thanks yeah It chops hard I've never heard one so good as this one the info I got was that it is a 1/8 mile killer but runs out of gear for the 1/4 cuz of the 4:10 gear from a guy that was with the guy I got the car from
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...what's that braided line for? the one draped over the ABS?
It's got a ball valve at the bottom of it I believe it's a oil catch or something it's name is on the black container is like zit or zap
check the numbers on the other head. they might be different.
Same as the drinker side
i have a suspicion those are 823 heads.

the np is just a casting mark on the rocker stand plate. it's not part of the head casting.

springs and retainers as well as the rocker trunnions and rocker bolts are all aftermarket. so you probably have an aftermarket cam as well.

intake manifold is obviously not stock. wonder if it's built for boost...? or nitrous?
So the heads are definitely worked over and are 823 a good head if they are 823 hell I can't even find the ECU in the damn thing I took it up to the dealership to try to get a spare key cut for it which they don't have blanks for anymore at the dealership the parts manager laughed at me saying you can't even find your own ECU and I bet him lunch that I bet he couldn't find it either and he couldn't and then didn't pay up for lunch
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looks like it was relocated. remove the little l-shaped kick panel in the driver side footwell, it's probably in there.

823's are just your standard LS3/L92 head. good as far as factory heads go.
looks like it was relocated. remove the little l-shaped kick panel in the driver side footwell, it's probably in there.
yep well it looks like i could be back in there lol it looks like a full house in there, why the hell would they do all that work to relocate that to the side panel it dose clean up the engine bay maybe to make room for a "Sushi-Slicer"
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