Today at work some unusual core's come up for rebuilding. I took some pictures and thought I would share. I remember reading a book on the LS1's that said the design phase started in early 1993 or so. Anyways, the oil pan and timing cover from these two LS1's both show 1994 on them.

One block has an open cam tunnel, and a hole machined in the top above the cam like the lt1 water pump drive..I wonder if they had thought about doing this in the early beginning of the LS1.

The bolt pattern for exhaust on one of them is different from today's LS1, and used non behive springs, and different retainers. Intake ports also have a notch in the top of them to clear injectors it would seam.

anyways, enjoy the attached pictures. they are large..

 

and a few more pics.

 

This is SO cool.

You can sure tell that this is developement stuff....those combustion chambers are wierd, look at that sharp edge in there.

Awesome pics, thanks for posting them.

 

Odd that any early protype stuff got out. We usually don't let that stuff out after initial testing.

 

Ok now the big question how much for the pieces of ls1 history lol
Imagine at cruise night u say what u got he says ls7 and asks you what u got ahh just one of the first prototype ls1s dangg!! bragging rights!!

 

I'll know in next few days if I am able to get them. We obviously won't be building them. They come in misidentified from core supplier as 01-02 LS1's.

 

who sent you these parts, what kind of car did it come out of. I thought they sent experimental cars to the crusher due to lawsuits. still way cool stuff

 

Neat, a non-roller LS timing set. Looks like the deck surface is not connected in-between cylinders, (90's cadillac aluminum engines are similar). I think its pretty cool that some stuff is largely unchanged (main caps, rods/pistons, rocker arms), and what is also kinda different is that pans looks almost exactly like the C6 Corvette pan.

The one oil pan has a broken temp probe on it. Too bad you don't have the water pump, it would be interesting to see if it truly was designed to be reverse flow. Hard to tell without the WP.

 

That is very cool. I guess we dont have dates on our timing covers? I have never noticed it in all the cams I swapped, but it was probably just because I was thinking: "Finally, last stupid bolt!" and just tossed it to the side.

If it were me. I would clean all that stuff up and just put it together as a display. House art.


Surely I am not the only one that saw this, but who is "we"?

 

Yeah I saw it too....
Location: Metro Detroit area
a gm spy maybe??? lol j/k.

 

Surely I am not the only one that saw this, but who is "we"?[/QUOTE]

Was wondering the same. Who are you

 

That's some neat ****, would love to get my hands on it. Does alcoa have a hand in the production LS blocks?

 

That's pretty bad ***! Also, yes... I too noticed the "we" and am curious...

 

pretty neat and yes i am wondering who farmington is lol

 

Ok, so everyone noticed it!

 

Sounds like a spy

 

that is very cool stuff.

 

subscribing very cool stuff.

 

If you guys would dig a little deeper, you would find the answers you seek...

Under his profile Farmington shows:

Occupation
Prototype machinist for GM

 

The "We" is likely referring to a GM powertrain engineer or something along those lines. Farmington is for Farmington Hills, MI which is Metro Detroit, and that is where GM does a lot of prototype R&D.