Ok I'm concerned using this kit, or any blower actually, because I'm not sure how the internals will hold up. I've heard from others that the 5.4 is a pretty bulletproof engine. I've also been told that it's the same short block that the gt500 uses. Not sure what's right or not. How stout is the internals of this engine? I don't want to put something like this on and throw a rod. Or blow a head gasket. Any info would be great guys. Thanks.
I think if you (or anyone else that buys this) uses common sense and doesn't dial up the boost past what the kit is pulleyed for you will be fine.
The minute you start pulleying this thing (and increasing the boost) on a stock 5.4L Raptor engine you run the risk of blowing the motor with stock internals.
I am pretty sure Edelbrock didn't just slap some kit together for these trucks and pray the motors hold together. There's some solid engineering in these kits along with the requisite testing. I'd be more worried if some small time, fly by night garage out of Podunk, OK thru something together and put it up for sale.
The 5.4L is a bulletproof engine, but like anything you start ****ing with stuff things are going to break.
The block is cast iron, just like the 2007-2010 GT500. As everyone knows the new 5.4L block in the 2011 GT500 is Aluminum.
The GT500 has forged pistons, a forged steel crank and beefy forged rods. This is due to the engine being engineered and designed by Ford as a forced induction engine from the factory. Stock GT500 engines have been known to output 1000HP on the stock rotating assembly. Yes, it's that well built from Ford!
The Raptor is not, so it gets by (just fine) with hypereutectic cast pistons and other parts. The 5.4L 3V does have a forged steel crank. If it's not abused I don't think you will have any issues with this supercharger kit on the stock engine.