Need to know hard facts
Need to know hard facts Alright I'm a little frustrated with trying to find info on how much the factory LSX aluminum blocks can handle. I sold my LS1 with the knowledge that it would handle over 1000 HP and then someone says it will. I'm curious how much can a factory LSX aluminum block take before it begins to fail. Would it need to be re-sleeved to handle it? Just let me know if anyone knows what the maximum horsepower is that the aluminum block can take before failure begins to occur.
I don't have first hand experience, but I'd say 1000 would be the limit. I've heard of people running an LS1 block bored .030 in a 800+ hp application and it's holding strong. I haven't personally heard of anyone running 1000+ reliably in an aluminum block.
Originally Posted by ArcticZ28
I don't have first hand experience, but I'd say 1000 would be the limit. I've heard of people running an LS1 block bored .030 in a 800+ hp application and it's holding strong. I haven't personally heard of anyone running 1000+ reliably in an aluminum block.
As for the original question, the LS1 block can handle 1000hp, I don't think anything will actually fail/break unless someone messed up during assembly, but the bores will move or flex. I personally haven't built an LS1 with 1000hp, but thats just what I've heard/read.
Originally Posted by KCS
I didn't think you could bore an LS1 .030" over? #.905/3.908" the limit with stock sleeves right?
Originally Posted by ArcticZ28
You can do it and people do. Like I said, someone just did it and is making good power with no problems. Also, why would JE/Eagle/etc make pistons for a .030 over bore in an LS1 if people didn't do it?
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Tell that to the guy running a .030 bored LS1 in his 850hp all out race car because for some reason he believes that his motor isn't imaginary, but I guess he's wrong. I personally don't care whether people believe it or not and have been in my engine many times. Just be aware that there are such things as internet hype and maybe this falls into that category.
Last edited by ArcticZ28; Oct 20, 2006 at 07:11 PM.
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Verdad Gallardo Well I was thinking about the LSx iron block for a while, when it comes down to it you will hardly notice that added weight in a 1000+ hp car. I also thought of a C5R build or an LS7 build but those are far too unrealistic. Looks like the iron block it is. Has anyone ever heard of a destroked iron block set up to rev to oh say 10-11k RPM? I was debating doing a high revving motor with big boost, but i thought the destroking would sacrifice too much torque
Originally Posted by 350-Z28
Well I was thinking about the LSx iron block for a while, when it comes down to it you will hardly notice that added weight in a 1000+ hp car. I also thought of a C5R build or an LS7 build but those are far too unrealistic. Looks like the iron block it is. Has anyone ever heard of a destroked iron block set up to rev to oh say 10-11k RPM? I was debating doing a high revving motor with big boost, but i thought the destroking would sacrifice too much torque
I just thought I might build something a little different, the idea was sparked by reading an article about the 69 Z28 Camaros equipped with a 302 with factory redline at 7,000, but with a race build revved to 10,500 all day long on the old school small block design. Just thought it might be neat to try and build a third gen for that.
