Hello all. Thank for taking your time to read. This is what i have. I have a 2004. And im putting a ls2 engine in it. My machine shop missed placed my brackets. Do i need ls2 engine mount brackets or ls1? Passenger side ls1 brackets not available. But ls2 brackets are. Any input would be greatly appreciated. Thanks

 

I haven't tried the later brackets, they may work however, if your machine shop ummm, "misplaced" your brackets, I would definitely MAKE THEM PAY. It's their responsibility! I can't help but wonder if there is someone there that needed them, or they sold them to a buddy.
You are right about the pass side being no longer available new from GM, and as such, a number of the salvage yards are charging scalper's prices for the right side bracket.

I just did a quick look on Ebay and found these right off the bat:


http://www.ebay.com/itm/Corvette-lS1...JWJbT4&vxp=mtr

My friend, that is one HELL of a good deal and if I were you I would be all over those like white on rice!! Even if you have to set your max bid at $125 or even $140 (~), I would still do it. These have approx 9 hrs left on the listing.

 

Did a little more sniffing around and found these:

http://www.ebay.com/itm/1997-thru-20...hWRP-P&vxp=mtr

This is also a good deal and are available at a BIN pricing so no "bidding" and waiting needed.

Regardless of which way you go, I would act fast, and be SURE your "machine shop" PAYS YOU BACK!

 

thanks for both of these. Do you think it will work with my ls2?

 

Yes.

Several years ago when I first replaced my original LS1, I installed a stroked LS2 and I reused my OE LS1 brackets. You MAY have to notch the right side bracket, I don't recall now, but I know I had to use a notched bracket on the right side for my LS7 block.
Even if you have to cut the notch (about 1" square along one edge), it's a simple thing. The reason is that there may be a threaded bolt hole mounting boss on the side of the block that may interfere. Easily solved.

I would also recommend you get the knock sensor wiring harness extension and use the sides of the block for your knock sensor locations. Btw, you can't use LS2 knock sensors, you must use your LS1 knock sensors.

HTH

 

thanks lonestarfrc, you have been a big help. I ordered the ones from the buy it now post. I called them and placed the order. is there more then one location for the knock sensors to be mounted? where can I get the wire harness extension from? thanks again.

 

They need to get mounted on the sides of the block. Btw, that's where the OE LS2 sensors are mounted as well, one on each side. That's actually a better location for them anyway.
It's been a long time and I can't remember if the LS1 sensors can use an existing mounting location or not (thread difference maybe?) but even if you have to tap new threads, it's not a major problem to overcome.
One thing's FOR SURE, if you are installing headers (I assume you are), you MUST use heat shielding for the knock sensor wires along both sides of the block and don't forget the CONNECTORS as well. Do NOT just rely on standard black wire loom as you WILL get heat damage both to the wiring loom as well as the connector bodies themselves, so protect ALL OF IT. I used some good quality reflective heat wrap and had to get a little creative when wrapping the connector bodies due to their shape. Buy some stainless wire or the small metal straps to assist in keeping the heat wrap in place if needed. Do NOT use zip-ties. They will melt.
Also, have you made plans to deal with the cam sensor relocation? If not, you'll need an extension harness for that as well.

I used Racetronix harnesses where needed. Plug and play and excellent quality.

 

Oh yeah, have you had your 24x reluctor wheel installed on your crank? If not, now's the time while everything's apart, otherwise you'll have to buy a convertor box for the standard LS2 58x reluctor wheel.

 

Thanks again. Im forwarding this to my install guys. As im currently in Afghanistan. I do really appreciate your input.

 

OK, I just assumed you were dealing with this yourself. They may already be aware of the different sensor locations, reluctor wheel, different front engine cover, etc, etc.

Yikes! You stay safe over there ya hear? Kill as many of those nasty goat f**kers as you can.

 

Lol. Gottcha. Thank you for your support.

 

I have a link to a engine change from a LS1 to a LS2 in a ZO6. It has some of the issues mapped out with the cam sensor on the front cover and the knock sensors on the sides of the block:

http://web.archive.org/web/201012091...engineswap.htm

Hope you can find some useful info in it.

 

There's some good poop-for-the-troops in there. Jason did a decent job.

 

Thanks zachaeous. I really appreciate you looking this up for me.

 

Which cam sensor is needed? Racetronics carry 2 diffrent ones. One has a -2 at the end. Not sure of the diffrance.

 

Unless you already have an LS2 CP sensor with it's short pigtail, you'll need the -2 version. You'll need to order a stock LS2 cam sensor and it's wiring pigtail w/bracket (conduit) to complete everything. You'll need to buy an LS2 front engine cover of course too.

12591720 LS2 cam sensor
12627501 LS2 cam sensor pigtail w/conduit
12600326 LS2 front engine cover

 

Wow. Thanks lonestar. You hooked me up.

 

Is this the cam sensor parts you referring too?

 

Yes. As you can see, the later model LS engines use the front of the engine as the location for the Camshaft Position Sensor and thus the reason for the new front cover. Using the correct cam gear is necessary as well since your pcm will not recognize cam sensor inputs from the later engines.

 

I reused my crank, and cam from my ls1. And just got forged pistons, rods, and ls2 block. So i just need the cam sensor extension, and the knock sensor extensions?