Fuhnortoner

So.

Converted to LS6 Valley Cover/PCV

Notched inside the valley cover.

Valley cover fits great. Torqued down.

WITHOUT THE STEAM TUBES, when i set the intake manifold in, it rocks a little from the front corner to the rear corner. I cant really see under the manifold and what its rubbing on. Any Ideas?

Fuhnortoner

Thinking its the 13mm bolts that the LS6 VC came with. Gonna try swapping them out for the original 10mm and see if that works.

Fuhnortoner

So here's a little FYI for whoever runs across this thread with the same problem.

It's not the bolts.

Apparently for the 04+ LS6 valley cover, using the LS1 intake manifold, the valley cover casting hits some of the ribs on the underside of the intake manifold. See attached pic. You can see in the center the area I had to grind to make it fit. Two small areas. Fits like a glove now.

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handyandy496

iTrader: (9)

Ya cant use them under an ls3 either. But make sure you do use them. I run mine around and down through an oil cooler cooling the water before it goes, back into the radiator.

Fuhnortoner

It wasn't the steam pipes. It was the actual valley cover

soloman369

iTrader: (13)

Mistake****

Fuhnortoner

I read it this morning and i was like "god did anyone actually read my post?"

Fuhnortoner

Not sure why this wasnt covered in LS1howto.

442scotty

Has anyone successfully used the LS6 updated valley cover with the Weiand 300-111 LS1 intake? I'm just in the process of installing the intake and it appears to hit the protruding bumps. On another note I saw a LS2 Valley cover that has PCV port and it doesn't have the offending bumps???