ok but it can be the cam still im just tossing up suggestions. also are you reusing any parts from any of the motors
the mechanic needs to stick to construction.
I really don,t beleive it,s me don,i had my buddy who has built race motors in the past redo the timing and he checked it over as well b4 i ran it.
could be knicking the bearings when pulling cam out
rod bearings are nowhere near the cam…
do you have an oil pressure gauge?
yeah he does… :bowdown: 
yes…y? readings were normal then as well as now.
guys push cammed L67 motors past 6300 all the time, usually the trans will go first
it just doesn’t make sense that you’re spinning bearings all the time, unless your leaving too much coolant in your oil for too long.
whoever said you’ll pop a piston first with too much knock is right, doesn’t sound like a timing problem to me
edit - are you case learning with these pcm swaps…it has something to do with calibrating the knock sensors, can’t remember what, though ???
what are you doing as far as prepping the motors for firing after they’re sitting for so long? do you have a gear drive oil pump? if so there’s a chance of it not creating enough suction on initial startup and that’s killing the bearings. priming the motor also isn’t a good idea as that does more harm than good, if you can you want tot prime it out of the car with an elec drill to push oil and make sure the pump is primed before starting, i’m willing to bet that’s how the 2nd motor went
That could of been y the second one went,i forget how we primed it b4,mac knows…it di happen after 20 mins of driving,plus i found the oil pressure valve in the timing cover was sratched and a few letal flakes in there. Now this third one,but all in all it is the same # bearing that is spun…now the 3.8,s do have a problem with the #5&6 not getting the same pressure as the others(factory fuckup) becasue of being in the rear of the motor. Now matt…i did however forget to do a case learn b4 i took it for a ride with coreys pcm in it nad took it up to 6300,so who knows but i really don,t hiunk that would of done it after only two WOT runs.Now here is the topic that i was talking baout…
if you primed it by turning the entire motor over with the starter to build pressure that’s prob what did it, the further the bearings are from the pump the worse it is. do you run a solid crank pully or a dampener?
Ur theory might be right but that doesn,t explain the first motor going on me with the #6 bearing sinning,same as these motors so wouldn,t u think elsewhere is the problem? Makes sense but i highly doughbt it was the prime this time.:dunno:
i’m just saying that there might not be a connection since all you did was swap cam i can’t see a cam causing a rod bearing to spin no matter what way you look at it.
Could be the LIM i reused leaking coolant lsowly into the motor,could be the PCM or else fule issue…everything i mentioned was reused so it could be one of those.
well the coolant thing maybe but i think that’s a big stretch…
eh…even a tablespoon of coolant could casue bearing failure…
could be, coolent>bearings
Sorry if already mentioned: any gas in the oil, maybe leaky injector?
i do beleive the oil smells like gas,but it did in the old motor too,i was told it was prob becasue of the cam and the misfires form it.