Dracer35

iTrader: (7)

Yes you can bore the LS1 5.7L to a 6.0L. GM doesnt recomend it but there is physically enough material there to do it. I just wouldnt run alot of boost or nitrous on one of these setups. I am currently in the process of the same build except I am running 243 heads instead of 241's. My car will stay all motor for a fun DD and that why I am ok doing this. Also, most of the parts I am using are extras I had or traded parts for this build. I am currently waiting to get my rotating assembly balanced and then I will be assembling the engine.

I will post updates in this thread. I have been in contact with Christian for several months now and I hope to help him prove that it can be done. Im sure there are gonna be plenty of people that will want to bash this build but we are saying its an option for those that have a LS1 block that needs more than .010" overbore and can get a cheap set of ls2 pistons.

LS6

intresting

Dracer35

iTrader: (7)

I finally got my rotating assembly back from balancing. Had a small problem. I bought a set of front engine accessories from someone here on ls1tech which included the balancer. Well the machine shop told me it was f*cked. It was over 40g out of balance. Anyway, I have the shortblock assembled now. Just need to finish the top end. Here are a couple of quick pics.

BLINGOLE

iTrader: (5)

I hope this is alteast a 2001 up ls1 block. I mean geez thats nuts you went nearly .095more then anyone ever has. Keep us updated on how long this guy runs without cylinder wall problems.

Dracer35

iTrader: (7)

I started with an 04 ls6 block that had slight cylinder wall damage that was beyond a slight overbore. I got the block for next to nothing so why not try it out? Keep telling me it can't be done... Just makes me want to do it that much more.

redtan

iTrader: (5)

Yeah and when you run into problems later and ruin your entire engine you're going to be wishing you just listened to other peoples' advice.

I mean heck, the ls1 has been out for what 13 years now. So more than a decade later you being the first one to do something to that engine that noone has dared to do in all these years makes you comfortable doing so?

I mean **** it, if you're going for something that's never been done why even bother having cylinder liners? Why not just bore them out all the way to 4.065 and run LS3 pistons?

PREDATOR-Z

What puzzles me is that why would GM go through the R&D to make LS2s if they could have done the LS1/LS6 easily with minimal risk.

Dracer35

iTrader: (7)

I accept the criticism. Ya, who needs cylinders anyways.... Let's just get rid of them completely and call it a rotary lol.

But really, I only have about $500 in this engine and the rest has been trading parts and doing some free labor in exchange for machine work. If it fails, you can be the first to say "I told you so"!

I know a machinist that says there is plenty of material there. He just says to get the engine warmed up before getting on it because the steel sleeves and aluminum block heat up and expand and contract at different rates. Which isn't any different than a stock engine. You don't wanna fire it up cold and run the **** out of it.

O and btw, I think Christain's (the op) next motor is gonna be a LS2 block with LS3 pistons..... ;-)

jetaws6

iTrader: (3)

Subd this one very interesting

dug

iTrader: (10)

I cant see this being durable. The cylinder walls will probably crack before 5k miles

LSxPwrDZ

iTrader: (4)

Yeah on an average reading dyno stock 28lb injectors are only good for right around 400rwhp. Some dyno's read higher than others but thats about average. I had a 6.0 LQ4 with stock 5.3 heads and a fast90 with a X3 cam and made 393whp/381wtq SAE. The stock injectors were averaging around 97-98% after I got it leaned out to where it needed to be.

98sivlerbullet

iTrader: (1)

If ppl dont try to push em to limit how will we know what the limit of a motor is? I have been bashed by alot of ppl on my car cause it shifts at 6800 to 7000 rpms on a stock motor. And I hit rev limiter and average of 3 to 5 times ever time i drive her. Had this car for 3 years now drive it like I stole it every time I get in the thing and all she does is ask for more. That being said just cause alot of ppl say it cant be done doesnt make it a fact. Heck this motor might last 50,000 miles it might last 5 miles but we will never know tell its running.

shawn_c992001

I hope it lives forever, just so you can say you did it.

1994z

iTrader: (48)

chris how is the motor still doing.

odarabla

iTrader: (1)

I gurantee you don't know my setup.. I never said I was using the stock LS1 heads. I said a stock LS1 bottom end motor. I have Trick Flow 215cnc heads sir!!! And I was making over 100 more hp to the fly wheel than he was. My old motor made 447rwhp and 403 torque. and ran a best of 10.90@123mph with stock suspension and full weight! 3600lbs with me in it!

odarabla

iTrader: (1)

This is not true!! Take the heads and the cam from a stock LS1 and put them on a LS2 motor and it will make more power. More cubes equals more power!! Your power will just be made at a different RPM..

kinglt-1

iTrader: (26)

The op's results prove it... his 6.0 made no more peak power than a 5.7 would have. Im sure the low end tq is a bit better as I already stated. A propely built 6.0 will make more power than a 5.7 I agree, but not with stock 241 heads...thats why gm put either 317 or 243/799 heads on all the 6.0's!

kinglt-1

iTrader: (26)

You said the op results were less than impressive because you made 100hp more than he did. What's your point? I would surely hope your setup makes more power with tfs heads or something is seriously wrong!

I-C5

iTrader: (1)

Can we get an update?

Dracer35

iTrader: (7)

I haven't talked to christian recently but my engine is still sitting on the stand as a short block. I'm out of money and need to buy the correct head bolts. My block is an 04 ls6 block so I ordered the 04+ arp's by mistake when I actually need the pre 04 set. I'll update as soon as possible.