Quote:
Originally Posted by FloMoCamaro
What is a safe horsepower limit on an alum ls3 forged 416/418?
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It's subjective really. There are so many variables. Are you taking about just the aluminum block or the short-block?
We've seen guys on here push the factory engines to 800+ rwhp so that thats like 900+ at the crank.. then you have longevity.. how long at that power level do you want it to last
Bottom line is you have aluminum which is a soft metal and it's own expansion rate mixed with steel which has its own expansion rate... then you have that crank swinging ... it all comes into play.
Wheel to Wheel used to have a 1200 hp LS2.. they offered using good internals...
If I was looking to make that or more I'd use and RHS block or more likely iron. And again its not to say that you cant get aluminum/LS3 to live past that... Its just my personal choice at those power levels