[Joshinator99]

Originally Posted by 2018ZL1

Pulled the motor and dropped the pan... as you can see in this pic the Thrust bearing spun and I am guessing it covered the oil hole which in turn burnt the bearing on cylinder #3 and #4! Not sure what will be salvageable here! I am really surprised this thing didnt throw a rod out the side of the block! Had to drop the engine and tranny at the same time because I couldnt turn the motor over to get to the converter bolts...

Ouch! Sorry my man. Wish I would have been wrong but had a bad feeling as soon as you mentioned the new converter…

[2018ZL1]

Originally Posted by Joshinator99

Ouch! Sorry my man. Wish I would have been wrong but had a bad feeling as soon as you mentioned the new converter…

Thanks! When you get into racing things like this happen from time to time! The short block I am going to build wont be giving me this type of trouble in the future! The Thrust bearing design on these engines make me scratch my head! So anyone out there with a stock bottom end LT1/LT4 that is pushing 900RWHP there is a fix for this... I sure wish I would have known!

[KingLT1]

It's a shame GM used such a shitty thrust bearing. The engine otherwise would be rock solid to over 1k whp. it's a gamble when you spin a belt driven supercharger hard...it pulls on the crank and causes the bearing to walk.

[2018ZL1]

Originally Posted by KingLT1

It's a shame GM used such a shitty thrust bearing. The engine otherwise would be rock solid to over 1k whp. it's a gamble when you spin a belt driven supercharger hard...it pulls on the crank and causes the bearing to walk.

Agreed! The entire bottom end is bullet proof except for a $50 part!