just built the motor, reputable machine shop sleeved the block and fit the Pistons, diamond pistons .020 over 19cc dish, gt500 rods, mild ported stock heads, mild cams, 2.3 Whipple, 60lb injectors, 16lbs boost, tuned for this set up.
cycled the fuel pump once, Fired right up, sounded good, ran for 45 min at the shop, all different rpms, shut down, checked and topped up fluids, road tested, drove 2 to 3 miles, turned around, halfway back it started to run rough, by the time I looked down it stalled, checked fluids, checked for leaks, tried to restart, starter sounded like it was trying but wouldn't turn the motor over, towed home.
came back next day, tried it, it turned over for a second but not a full rotations, put charger on, tried an hour later, turned over several times slowly. tried an hour and a half later, wouldn't turn at all. tried to turn by hand, will not move.
no fluids down or contaminated, no check engine light, no unusual noises before it stalled
any ideas?