Thread: LS Thrust bearing problems??.

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On another forum guys are saying a common problem with LS's is thrust bearing issues. In fact they said King bearings are making a thrust bear to help that out. I'm looking for you guys to reply to this thread for info about that. Whatever you know.

Check this article Gary - some really good information here on thrust bearing failure.

Thrust Bearing Failure: Engine Builder

kings bearing have a reworked flange bearing for there thrust on some engines .there other thing like oil and finish setting the bearing in the block so your running on all the bearing face .i re worked the bearings in some engines . sorry i will not get in to this much but soon..it will be in my engine building and machining book. i will go threw all this in my book and my recipe for barbecue pulled pork

Pat---I have noticed that your spelling and typing have gotten better lately---are you working with a ghost writer on the forumn??????

Recently I have seen number posts about failures.Some seems to be because of T/C's not having anti balloon plates and it seems tranny line pressures are effecting the failures too and some because of throw-out bearings having too high pressures not completely releasing. But I am thinking it is a design flaw in the cranks/block. That is the comments I am looking for from you guys. This is the trusted site for info. Jerry-the aftermarket is saying the stock aluminum blocks are ok for f/w hp of 800 but after that you need a aftermarket block because the oem's deflect.

It seems the LS engines have a thrust bearing problem or at least it's a sensitive part...........

i know of 3 ls engine all over 500hp all still have a thrust in them .one is over 6 years old . so some guy balloons a stall ?? it going to take out the thrust..... thinking it.s the block or crank issue is plane dumb on the part of the jack ass to cheap to buy a good stall .i know there putting a thrust washer on the front of the crank were the oil pump is or was then using a dry sump but big power engines

There is a multitude of situations that will effect thrust bearing life---assuming that the block, crank,bearings are properly prepared and assembled---everybody knows about throw out bearing non release, torque converter balooning---add in to that pilot bearing against input shaft splines, lack of clearance in complete drive line up to and including bad pinion bearings in the rear end pushing drive shaft forward, misaligned belts/pulleis on the front, a driver who rides the clutch pedal, sits at traffic lights with clutch engaged, etc, etc---------

As for the aftermarket saying that stock aluminum blocks are good for 800hp----that is nice of them, especially since they are trying to sell you one of theres!!!!!!!!!!!!

So it is a fair statement to say the LS series engine's thrust bearings and engine design is as reliable as the first gens??.