This is my working theory also. I have a stock stroke 5.9/360 not an LA and it’s turbo charged. Stock crank, forged pistons and rods. Boost comes on around 3k with a 3500 stall and I shift at 5500rpms. I haven’t turned it up to produce 700hp but I’d say I’m close to 600hp. It’s been reliable at that level for a while. Plenty of street blasts and a handful of 1/8 mile runs. I think my head gaskets would probably let go before the block would if I turned up the boost. Right now I keep it around 10-12psi but have gone as high as 15psi.
