pHEnomIC

iTrader: (14)

Thinking about getting a forged 408 lq9. how much power can these things handle assuming big power adder??

99blancoSS

iTrader: (115)

Quite a bit. How much power were you looking to make?

Gen414

iTrader: (38)

Alot of variables, and one that goes overlooked in teh search of power sometimes is a tune on a motor. In other words, even teh absolute BEST parts will be destroyed in a matter of seconds with a poor tune (ie detonation). That being said, you also have different levels of "forged" parts as well (like a cheaper forging made in China) And then you have RPM. RPM (lots of it) is alot harder on parts as well (especially rods and crank). Also, the power adder of choice (nitrous is harder on parts than say a turbo)And then of course, you have to worry about WHO is putting your motor together.
OK, now that you are let me try to answer your question:
A good build by a reputable builder, using good parts, good tune, with a 6.0 truck block as your base, you can get a motor to live to 1200 rather easily using a turbo. Now, I KNOW there are people out there making more power than that with similar combos, but I believe 1200 HP is a nice safe number that is achievable by most. At this level, without serious work to the stock block (like hard blocking, billet mains, etc..) the block would be teh limiting factor. Again, there are so many variables out there to determine how much power a motor can handle, just remember that. But, you can go out and make 1200+HP with most of the builds you read around here.

PAGregSS

iTrader: (10)

Here's a whole thread worth of results:

https://ls1tech.com/forums/dynamomet...s-part-ii.html