Not my mopar, but need advise on 5.7 vortec chevy

I was working at the dealer when that engine came out, it did have bearing problems, fuel problems the only engine I ever saw that had 50psi of fuel pressure and wont start and the pump was bad! at 55psi started every time,but like someone said ,did someone drop something down the intake usually coolant down a hole can bend rods .when you get your new motor don't use the gm plastic gaskets go aftermarket