Ls1 6.0L test results XR281HR
09-24-2011, 03:49 PM
#42
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The engine is running fine. This is one of two made and working good. No problems so far, but they don't go on the raceway. Just regular driving and some tough pulls out of traffic lights.
Just finished a Ls2 with Ls3 Pistons. But that's not special. Ls1 with 6L pistons is more extreme.
Just finished a Ls2 with Ls3 Pistons. But that's not special. Ls1 with 6L pistons is more extreme.
09-24-2011, 04:11 PM
#43
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New engine. Here is a new one for all you. 5.3 bored up to 5,7 with 317 heads milled down to 62cc, 1,8 roller rockers, Edelbrock intake, 90mm Holley, Comp cams xr271 camshaft, stock rods, stock crank, arp bolts, original flat gm pistons.
Ls7 lifters with comp cams 7350 push rods with guides.
Engine is degreed and checked for piston clearance so don't bring any thing up that the heads are milled to much and cannot be done. it's already done and checked by to diff engine mechanics. And yes the intake is bolting on to the intake runners with no problem. this is max we could do the 317. More Will be problems for the valves..
We aiming for 500bhp on this setup in Land & Seas Engine Dyno "dyno-Max"
tuned with Efi Live
Ls7 lifters with comp cams 7350 push rods with guides.
Engine is degreed and checked for piston clearance so don't bring any thing up that the heads are milled to much and cannot be done. it's already done and checked by to diff engine mechanics. And yes the intake is bolting on to the intake runners with no problem. this is max we could do the 317. More Will be problems for the valves..
We aiming for 500bhp on this setup in Land & Seas Engine Dyno "dyno-Max"
tuned with Efi Live
10-06-2011, 04:23 PM
#44
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Here is a new one for all you. 5.3 bored up to 5,7 with 317 heads milled down to 62cc, 1,8 roller rockers, Edelbrock intake, 90mm Holley, Comp cams xr271 camshaft, stock rods, stock crank, arp bolts, original flat gm pistons.
Ls7 lifters with comp cams 7350 push rods with guides.
Engine is degreed and checked for piston clearance so don't bring any thing up that the heads are milled to much and cannot be done. it's already done and checked by to diff engine mechanics. And yes the intake is bolting on to the intake runners with no problem. this is max we could do the 317. More Will be problems for the valves..
We aiming for 500bhp on this setup in Land & Seas Engine Dyno "dyno-Max"
tuned with Efi Live
Ls7 lifters with comp cams 7350 push rods with guides.
Engine is degreed and checked for piston clearance so don't bring any thing up that the heads are milled to much and cannot be done. it's already done and checked by to diff engine mechanics. And yes the intake is bolting on to the intake runners with no problem. this is max we could do the 317. More Will be problems for the valves..
We aiming for 500bhp on this setup in Land & Seas Engine Dyno "dyno-Max"
tuned with Efi Live
Have you seen the new Holley Hi-Ram intake? Right now they are making it for the rectangle port heads but they are supposed to be making a cathedral port version soon. Only problem is I read that it is for big cube engines and loses torque down low which is usually expected with that style intake anyways.
11-19-2011, 02:41 PM
#45
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wow, interesting thread, anxious to hear what your results are Dracer35.
by the way, any chance you've been able to find those Mahle 4005ms-15 piston rings in your garage?
by the way, any chance you've been able to find those Mahle 4005ms-15 piston rings in your garage?
12-15-2011, 10:39 AM
#46
So...
Basically, there is a 5.7L (3.898") aluminum block bored to 6.0L (4.000") making 462 BHP & 378 Ft-# of torque on an engine dyno.
The question that's been answered is that it can be done physically. Would like to learn more.
-What would happen to the block when it is set up to make the level of HP & TQ that is more common to modified LS2 set ups? For example; 600 BHP, 440 TQ.
-What happens to the block after 10 consecutive pulls to @ 7K RPM?
Demonstrating that it can be physically done is a start. It is important to continue with more detail. There are many reasons why more information is needed. First being that most won't find the reward worth the risk. 462 BHP & 378 Ft-# of torque through LS2 cubes isn't enough to peak interest. This isn't a knock. So, let's not get sidetracked by arguing set ups related to producing weak numbers.
Members will want to know what happens when we start throwing big numbers & stress @ it. Thank-you for posting. Let's keep this going so that there is documented information that follows through potential peak numbers. Until that point is reached, the subject is not defined.
Basically, there is a 5.7L (3.898") aluminum block bored to 6.0L (4.000") making 462 BHP & 378 Ft-# of torque on an engine dyno.
The question that's been answered is that it can be done physically. Would like to learn more.
-What would happen to the block when it is set up to make the level of HP & TQ that is more common to modified LS2 set ups? For example; 600 BHP, 440 TQ.
-What happens to the block after 10 consecutive pulls to @ 7K RPM?
Demonstrating that it can be physically done is a start. It is important to continue with more detail. There are many reasons why more information is needed. First being that most won't find the reward worth the risk. 462 BHP & 378 Ft-# of torque through LS2 cubes isn't enough to peak interest. This isn't a knock. So, let's not get sidetracked by arguing set ups related to producing weak numbers.
Members will want to know what happens when we start throwing big numbers & stress @ it. Thank-you for posting. Let's keep this going so that there is documented information that follows through potential peak numbers. Until that point is reached, the subject is not defined.
subscribed!
12-17-2011, 04:07 PM
#48
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.
I shift at just under 8000 rpm, but I make peak power at 7200 and it doesnt drop off fast.....
thats just useless rpm for you, youre definately going slower shifting at 7000 rpm
12-18-2012, 01:55 AM
#49
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I know I'm digging in cemetery but I'm planning to do mine.How is the reliability of this ? my engine is 04 will be with ported 241 ?
Thanx
Thanx
Last edited by Chevy_Ss; 12-18-2012 at 08:52 AM.
12-18-2012, 01:21 PM
#50
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I know that Chris10an has had good luck with his. They have proved to be reliable over a couple years now but as stated, he doesn't run his at a track. Just the occasional spirited driving. I noticed some people mentioned the power not being spectacular for having LS2 cubes but you have to remember we are doing this as a cheap way to get a little extra power and he is still running stock 241(5.7L) heads on his combo. Not the better flowing 243(6.0L) that come stock on the GTO and LS2 Vette. Plus his is making that through a stock LS1 intake and conservative camshaft. there is more power on the table if thats what your looking for. I wish I could tell you what power mine makes since I have the 243 heads for my setup but I still haven't had the money to finish it yet. If you are interested in trying this, I'm all for it. People will say its not worth it but that is their opinion. When mine is finished I will have a freshly rebuilt (by me) LS2 motor for around $8-900. So do what you feel necessary but I think you would be happy with the results.
12-19-2012, 04:37 AM
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I know that Chris10an has had good luck with his. They have proved to be reliable over a couple years now but as stated, he doesn't run his at a track. Just the occasional spirited driving. I noticed some people mentioned the power not being spectacular for having LS2 cubes but you have to remember we are doing this as a cheap way to get a little extra power and he is still running stock 241(5.7L) heads on his combo. Not the better flowing 243(6.0L) that come stock on the GTO and LS2 Vette. Plus his is making that through a stock LS1 intake and conservative camshaft. there is more power on the table if thats what your looking for. I wish I could tell you what power mine makes since I have the 243 heads for my setup but I still haven't had the money to finish it yet. If you are interested in trying this, I'm all for it. People will say its not worth it but that is their opinion. When mine is finished I will have a freshly rebuilt (by me) LS2 motor for around $8-900. So do what you feel necessary but I think you would be happy with the results.
.I'm going to do mine as well .My engine will be a daily use engine & some occasional spirited driving .Sure my car will visit track once or twice 
. Soon I'll try to be updated .
12-19-2012, 05:16 AM
#52
Why would anyone waste the time and money on this?
My ls1 bottom with 2002 LS6 top end makes 385 to the wheels with no tricks, through full ex, stock TB, water pump, LS6 cam and MAF. If I did all the "tricks" I would bump 400 at the wheels.
He makes another 30hp at the flywheel for ALLL that brain damage?
My ls1 bottom with 2002 LS6 top end makes 385 to the wheels with no tricks, through full ex, stock TB, water pump, LS6 cam and MAF. If I did all the "tricks" I would bump 400 at the wheels.
He makes another 30hp at the flywheel for ALLL that brain damage?
08-21-2013, 04:47 PM
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I have a friend, non member here, who did the exact same thing as the OP. His car has not been dyno'd tune just tune on the street. He has the stock 243 heads with an LS6 intake and a cam that was suppose to be an MS3 (bought the cam locally). Has gone a best of 11.37 @117 (if I remember correctly that was his mph). So it can be done. Yes, he also knows that it is not safe to spray it.
