heres my question: yes the stock internals and what not can hold a retarded amount of power. at what power/boost level do the cylinders in an LSx motor turn into egg shaped puzzle peices? im asking now because i dont wanna go ahead in the future, build an alum. block...put boost on it, get hooked and end up turning the thing into a nyc art gallery hunk of junk.

 

I haven't seen an aluminum block fail due to power. I believe Harlan was running an aluminum block @1400hp or so.

 

Yeah, it will probably hold as much as your gonna be able to reasonably afford $$$$ to throw at it. unless you have a "retarded" amount of boost.

good word: retard

 

I think the deal is...you will lift the heads and suck up water before you blow the engine due to power.

 

That would be wild to see....

 

no blow per say but deform. ppl keep saying o, with such and such set up iron is better, but if harlans running that much i think ill be arite..lol. anybody measure cylinder roundness on one of these motors after a hard season?

 

No mearsuring, but the block and pistons from the racecar are now in my daily driver

30k miles since april 05, it's currently down for a tranny build (again ). Motor is going strong

 

What's that your 1852803 tranny on the truck?

 

hm, i guess thats another myth ls1 busted

 

the rebuild will be #7

 

W2W had some good information on this as well. Give Kurt a call and tell him what kind of power you are looking to make...he can discuss what they have seen with some of the high hp aluminum testing that they have done.

If I remember correctly he said that they started to see some movement in the aluminum blocks around 1100-1200 hp. This was with the LS1 blocks, from what I have heard the LS2s are a little stronger.