So I blew up my stock ldk motor with slightly less than 3k miles . Fbo, z54 turbo , aluminum flywheel, southbend stage 4+ clutch, built stage 2 f35 from pwerks, tuned by zzp . I broke in the motor fairly easy for 1500-2000 miles . I went for a top speed pull from 80-160 . As soon as it went past 160 I started to slow down and seen lots of smoke flying from the back of the car I slowed down and it died . Car is wet with oil underneath. Assuming there is a giant hole in the block now . The motor is trash now . My question is what could be a potential cause for the catastrophic failure with the setup I had . It shouldn’t have blown at the power level I was at . Well at least not that soon . The email from zzp said I should be around 380-400 hp for my setup. I never WOT under 3-3500 rpm’s. The car felt solid . Nothing has caused any concerns, until when it blew. At this point I have got so much money into the car I will be going a full race build . Zzp racing shortblock . Zzp neutral balance shafts . Ported & polished head with valve springs, stage 2 cams, opel injectors, 5th injector kit, switching the z54 turbo out for a zfr7163 , retune on e85. That’s every supporting mod zzp sells for my motor besides a upgraded HPFP but I doubt that’s even needed