gojo

If you go to an LS2 block these are the LS2 parts you will need. The remaining LS1 parts work.
Lifter retainers
Valley cover
Timing chain cover
Timing chain and gear
Timing chain dampener
Cam sensor and electrical connector
Tap block for LS1 knock sensors
Plug PCV outlets on rear of each valve cover(2)
Run PCV lines per LS6
LS2 head bolts

Bink

Thanks gojo!!

Where did you tap the block for the LS1 Knock sensors??

gojo

There are existing holes on each side of the block. The one on the passenger side is right near the front of the starter and the one on the other side is about in the same position.

gojo

Joel,
Go here and see the 3rd photo down. The hole is in the back where the starter would be. Same for other side. It misses the starter by about an 1/8th".
http://www.gmhightechperformance.com...s/0405htp_ls2/
Joe

Bink

Thanks! Is it the lower hole on the starter flange - facing the front of the block?
Flange is similar on the left side of the block?

gojo

It will be right in front of the starter. It will be obvious with the starter in place. Go to the bottom of the linked article and see the complete engine. I needed a magnifying glass to see the black LS2 sensor bolted on, in front of the starter.

Bink

Okay, I think I see it. You can see the driver side sensor in the cut-away pic that says "Another look at the cutaway engine reveals an inside look at one of the new, thinner-wall exhaust manifolds." ??

gojo

Yes, that's it on the driver side. I might be able to get a picture of the passenger side. It can be seen from above.