De nada.

 

This might help others in the same boat...

 

Kewl.

Howz about wire extensions? Any luck?

 

Found this on caspers site....not sure if you can get just the knock sensor relocation harness or not, but I'm pretty handy with the old soldering iron so I'll give that a shot first.

http://www.casperselectronics.com/mm...Category_Code=

 

now im confused.
I have a 99 LS1, and I have the kit with the new valley tray in the mail.
am I going to have issues with knock sensors?

thanks

 

It would appear that the Casper's knock harness allows you to retain your LS1 sensors and give you the extra length.

 

If the "kit" you're referring to is the same as the one offered by Thunder i.e. LS6, then you are good to go. Your sensors will go right back where they were before. As you are aware of by now, you will of course have to remove the small piece of aluminum casting inside the lifter area of the block since you have a '99. I had to do the same thing back when I made this same conversion to my old '99 LS1 too. Being paranoid about things, I used plenty of tape on the intake ports and multiple layers of shop towels all over the lifter area. It came out fine.

NassyVette's situation was a little different in that he was getting info on using an LS2 valley cover.

HTH

 

I ordered the #12568002 from Gene, will this work without any extra parts?

I am aware of the grinding an am looking forward to it.

 

I saw your OP and the part numbers but I didn't look them up to see what application they were for, etc. Is that the valley cover for the LS6?

I would venture a guess here and say that if you told Gene what you wanted to do, he is sending you the correct items for your needs.

 

As far as any "extra" parts; if you want to, you can use the factory LS6 pcv hose arrangement ("U" shaped tube with attached pcv valve) or do what I did and that was run my hose off the valley cover through a catch-can, and then back to my old pcv valve where it attaches to the intake manifold. If I remember I did have to get one or two small rubber or plastic adapter pieces to attach to my pcv valve piece. That was easy enough.

You will be removing all the existing long pcv hose assembly that snakes around behind the engine over to the driver's side and cap the hole on the driver's side and the tube at the rear of the pass side valve cover too. The one item you will not change, is the fresh air supply hose that runs from your throttle body over to the nipple on the front of your pass. side cover.

HTH

BTW, if you go to Thunder's site and enlarge the picture, you will see - in the foreground R/H side - a small black rubber hole plug that fits the driver's side valve cover hole perfectly. It actually carries a factory GM part number, and that is what I used on mine. I don't have the part number anymore though. Sorry.

 

Gene did mention it was the earlier of the two covers available. That's it.

I am reading the write up on LS1howto.com on this conversion and nowhere does it mention anything about running into problems with the knock sensors or using wire extensions etc.

It does mention that I must have the 2001+ style coolant vent tube for this cover to fit.
What and where is this coolant vent tube?

if this is the coolant tube that goes through the throttle body to warm up the incomming air, I did the coolant bypass mod, and capped off the tube that goes through the TB and connected the hoses together.


Is this what it is refering to?

Thanks for the help Lonestar, I appreciate it

 

No. The coolant bypass matter is a different thing and has no impact on what you're doing.

Many guys who are converting to the LS6 intake manifold also did the LS6 style valley cover at the same time. That's what I did.

There is a small metal coolant line that runs beneath the intake manifold. It attaches at the front, close to where you connected your bypass hose, in a "T" type configuration and runs underneath the manifold to the rear where it branches off in another "T" shaped arrangement. Each "leg" of the "T" has attaching points to the cylinder heads (one on each side) and uses small rubber o-ring type sealing gaskets. The Z06 engines do not have this tube assembly running beneath the manifold. It has a short piece of tubing used in front (similar to what you see on your engine when you look under the front of your intake manifold) and two separate metal plugs (with small gaskets attached) for use in the rear when you remove your intake.

If you are just going to re-install your original LS1 intake manifold, you should be OK and not have to change anything. CHECK WITH GENE ON THAT PART TO BE SURE.

If, on the other hand you want to, you can change over to the LS6 style coolant line arrangement. It's not an expensive thing to do and Gene will know exactly what you're talking about should you choose to do it. The only reason I think it's mentioned at all is because if you are also making a change to an LS6 intake manifold, you MUST change those little coolant lines, etc due to clearance issues beneath the manifold. As far as I know, you can re-use your existing coolant line set-up with your new Z06 valley cover, but as I said you might want to check this.

HTH

 

will check into it.
here is the exact quote from the write up:

"You must have the 2001+ style coolant vent tube as well for the LS6 valley cover to fit! All 2001+ LS1's will have this, and any LS1's that have upgraded to the LS6 manifold and pipes will also have the new coolant vent tube."

 

Post your link there if you can.

Oops, never-mind, I have it. Let me check it out. Wait one.

OK, I think I see what's going on in the pictures posted. It appears from what I see in the close-ups that this particular '99 (with the red painted valve covers) ALREADY has done a conversion to the LS6 style intake manifold and therefore has already done the REQUIRED COOLANT LINE CHANGE you are wondering about. I can tell from the pictures that the LS6 coolant lines in the pictures looks to be pre-existing the PCV valve (valley cover) change-over article. They are not new and were obviously already there on that particular engine.

If you are NOT changing over to an LS6 intake manifold and are KEEPING your LS1 manifold, you won't be affected by this and will just re-attach your lines as before. Also noted one other thing too. The GM block-off hole plug I mentioned earlier is shown in one of the pictures (in an inset photo, along with the GM part #) and it's the one that fits the driver's side valve cover perfectly.

 

Just as an FYI to LS1 owners considering the LS2 conversion, it won't work. Not only would the knock sensors need to be relocated, the oil pressure sensor and cam sensor are in the way as well, and even if they were relocated, the LS2 cover is longer in the back and uses a different gasket that will not seal to the LS1/6 deck.

 

Lonestar, are you sure I can use my 1999 coolant vent tube assy? again I am not converting to the LS6 manifold, I am keeping my LS1 manifold and running a LS6 valley tray. I am half way through this project, and it looks like it will have clearence issues, should I bend the tubes accordingly to clear things so I can get it to fit? or?
anyone else outthere do this swap/
thanks

 

Yes, I understand you are in fact keeping your OEM LS1 manifold. That's why I asked you the question initially; and that is because of this very coolant tube matter. The LS1 intake has additional clearance on it's underside for coolant tubes like yours that the LS6 manifold does not.



You say "looks like it will have clearance issues"; where - exactly - are the clearance issues you are speaking of? Have you bolted the LS6 valley cover up and tried attaching your original coolant tubes over it yet? If there are any minor clearance issues, then sure you can bend/form slightly as needed, but I don't know of any reason why you have to do so.

HTH

 

I tried to put it all back on last night, and the tube is keeping the intake from sealing, the intake will rock back and forth (just slightly) the LS6 valley tray is roughly the same thickness, however it has some raised cast in bumps which hold the tube slightly higher than before making contact with the bottom of the intake. Im sure with allot of time, patience, I could re bend the tube here/there to make it clear, but I dont want to chance an intake leak, and would rather just bolt on parts that will work.

Im going to purchase the rear block off pieces #12602540 and go with the other front tube #12602544 and re-use my #12551933 (gasket seals)

thanks

 

OK. In that case, I agree. You would be better off just getting the other style pipe/plugs, etc. At least they're not a big expense.
FYI, initially the Z06 had this (pipe) setup mainly due to lack clearance under the Z06 manifold. Later ('02?) when all the non-Z (LS1s) came with the "Z06" manifolds, they too switched over to the same style coolant tubes.

I would recommend either GMPartshouse or Fichtner Chev. Either will be substantially cheaper than your local stealership.

 

I finished this mod. last night. Everything went great, I did go to the 2001+ front tube and blocked off the rear holes.

Installed the new LS6 Valley tray
Installed Dual catch cans (1 for pcv line, and 1 for fresh air line)

results to come after I put some miles on this.
thanks for all the advise etc...