1,200 hp 4.8!!!!

[SactoJim]

Anybody see this article in the new Hot Rod? They took what they thought was a well worn 5.3, did a mild port/polish and installed 2" intake valves on the stock heads, diff rings, put a good cam in it and a FAST intake. Made like 470hp NA and then they put a intercooled 2-turbo system on it and cranked it up to like 27lbs boost! They were running the motor up to 7k RPM's which got them scratching their heads, only later to find out why.

What they wanted to do was see what it would take to grenade a stock bottom end LS motor. At the end of the day, they claim they did something like 60 - 1000hp runs before the ignition gave up. They didn't hurt the motor.

They later took the motor apart only to discover it was a 4.8!

These LS motors are the chit!!!!