I guess it's about time I posted those tips for reaching all the bolts I was going to past "next week" ... 3 months ago. I may be too late to help anyone being 15 years since the car came out, but whatever. There are still first time LS owners. This is on my Gen 1 V8. There are other writeups and a tech article, but this is meant as a tips, tricks and hints type writeup
If this is your first time, I recommend doing the passenger side first to build confidence, then the driver side because it's a bit harder. If this is not your first time, do the driver side first to get the BS out of the way. One thing to note is most of the bolts are retained in sleeves that are in turn retained by the gaskets. I believe only the two lower firewall-side bolts are not retained. Or uppers. Mine might be mixed up. Reach in and pull; it'll be obvious. Note "remove" usually just means "unscrew until no longer threaded"
Step one: take things off. Wiper arms, cowls, engine cover, headlight cover, shock tower covers, and the canister bolted to the driver shock tower, intake tube from filter to throttle body. The uncovered shock tower brace also provides a nice grab/lean point. Depressurize the fuel line and use the quick disconnect tool to disconnect the fuel line. Remove the shock tower bolt of the fan fluid reservoir.
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You'll want the extra access to those back bolts in particular. Yes, you can get away with fewer items removed, but this relieves a bit of stress and complication of 2 u-joints, several extensions, and seeing with your hands
Step 2: disassemble the engine
Step 3. Reassemble.
Here's all I used once that stuff was removed.
8mm normal socket,
8mm deep socket (both 1/4" drive),
1/4" u joint, and extensions.
3/8-1/4 adapter depending on wrench.
I don't remember what the factory coil cover and COP bolts were.
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This picture has everything I used for the actual VC bolts, but not pictured:
normal non-torquing ratchet,
fuel line quick disconnect tool,
screwdrivers,
socket for windshield wipers,
beer,
more extensions
1/4" drive screwdriver handle (just for some speed)
Step 2: remove COP covers and COPs
step 3: remove the obvious bolts
step 4: remove the complicated bolts
PASSENGER SIDE
The lower bolt between the forward spark plug and timing chain is a bit tricky. Just rotate the fan fluid reservoir around it;s other bolt and you can get straight extensions through like this
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For the lower firewall-end screw, use (in order) shallow 8mm socket, u-joint, ~2ft of extensions, wrench. Stick it between that massive wiring harness and the insulation jacket around your cabin air intake
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The upper-rear bolt may be a little tricky due to the plastic harness shield, but the same socket-ujoint-fewer extensions combo should work.
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To remove the valve covers once all bolts are removed, just lift up in line with the spark plugs and slide forward towards the radiator. It may stick a bit and take some light prying with a flathead screwdriver. Move it slowly because the screws will catch on the camshaft braces.
Reassembly is reverse, nothing particularly special
DRIVER SIDE
Did you take this thing off?
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Do like Ke$ha and take it off.
Remove obvious bolts
The dipstick has a flange that is attached to one of the VC bolts via stud/nut. Remove the dipstick, remove the nut, then pull the entire dipstick tube up. Or, recall how difficult it was to reinstall, and just cut the flange in a way that it hooks the stud, but can still be slid around it and off
Wide shot, but you can see the flange is now a J-shape
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Another
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Remove stud with deep socket
Next, between cylinders6 and 7 (so the middle of the bank) on the lower side, shove the straight extensions between these two brake lines, between the shock tower and brake reservoir
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Get the lower rear firewall bolt the same way you got the corresponding bolt on the passenger side: socket, joint, exteeeeeeeensions. Stick it all between the two solid brake lines coming off the brake booster
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To get the upper, just socket and exteeeensions through where the cowl was. My finger points to where the socket/bolt actually are (that little blue)
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This VC is harder to remove due to there being more things in the way. Twist the oil fill spout and remove it. It may help to unclip the throttle cable from it's locating bracket in the middle of the car. Move the VC slowly up, then forward. When it gets stuck, try rotating it end to end to see where it's caught. Most of the time, it's a bolt caught on a camshaft part. Just reach under and lift the bolt.
Assembly is mostly the same, in reverse. For the last bolt I showed, you can stuff some paper or paper towel in the socket, followed by the bolt, and it will stay in the socket pretty well.
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This is also a good time to replace your cabin filter.
Hope I helped someone. Please consider the environment before quoting this entire post.