Is our intake manifold o-ringed or does it use the 8 individual gaskets like the ls1/6 intake? I have all the other necessary gaskets/bolts for my head/cam swap this weekend but I dont know about the intake gaskets. I know they are replaceable on the ls1/ls6 but none of the 'howto' articles I have read make any mention of changing them. Do I need to change mine?? If so anyone have a p/n?

 

You shouldn't need to change them. As long as you don't drag them across a rough concrete floor or a bed of nails or something, they will be fine.

 

For no more than they cost I would replace them. We get trucks in above the 50,000 mile mark with leaking intake gaskets at times. Causes a ses light and misfire on cold starts. It's too inexpensive not to do since your gonna have the intake off.

 

i might add that the gm service manual says to only use intake gaskets ONCE. once they crush, they dont seal good the second time. i compared my used gaskets to my new intake gasket, and it was night and day difference

 

I stand corrected ... I'd say replace them then ... in that case, anyone got a part number for them?

 

i dont have it offhand,, but i think it was 13 bucks from the dealer.

 

hey kenny, how did the heads turn out? you just cleaned up a bit right? or did you try and go all out on them? let me know. i need some info for when i take mine apart and try out my shade tree mechanic abilities....under supervision of course.

 

Well if they are the same as the ls1 the pn is 12533587 and they are more expensive than the head gaskets. $50 for a set of 8 of those little suckers(this is internet pricing). I am going to the dealer at lunch today and see how much the are there.

John... I haven't touched them yet. My plan is to start on them tomorrow evening.