spun a bearing:(
 

im truly upset about this but knew it was coming sooner or later.
recommendations on bearings?

Main? Rod? How are you sure?

the god awful rubbing noise coming from above the oil pan.
not sure if its rod or main hoping to drop the suspension some time this week.

Why would you drop the suspension to fix a bearing???

maybe hes thinking rebuild

To pull the motor ?

Unless you know another way of doing bearings in the car ?

The motor has to come out the bottom in the ls1 cars?? I read on tech that you can pull them out the top but maybe not

Without getting into preferred methods looks like hes coming out the bottom

Low on oil? What happened?

i like going my comfortable way will be taking plenty of pictures.
there are many arguments with removing from bottom and top.
i wont do either.
ill be removing the pan and swapping one bearing at a time spinning the mains out and spinning them back on.
cummins sells an oil galley screw to rotate the engine to push the old bearing out and the new one in.

no always good on oil but have been finding small shavings for over 40k miles.
i sent oil out to lab and brought back material only found in bearings some time ago.

just the constant beating on stock bottom end.

To be doing internal motor work like that, its most likely best to do it out of the car.

i agree but this is my daily and i hate borrowing cars from people.

If a rod bearing spun, that rod will be trashed and the crank will be damaged as well. If it spun a bearing the motor has to come out!

This!

LS1s are a dime a dozen, why even bother half ass fixing it?

why do you say its half assed.
does everyone drop the motor to change sparkplugs too?

How do you plan checking bearing clearences? As my previous post says, if a rod bearing spun then that rod is no good. It will also damage the rod journal on the crankshaft. If a main bearing spun, then the crank is trashed and the block will need to be machined then fitted for thicker main bearings. Throwing new bearing at a damaged rotating assembly will solve nothing and would definately be half assed. That motor has to come out of the car. Besides, I don't think you gonna be able get the main bearings out without removing the crank.

what would be possible to switch from my ls1 to a 5.3??

Wait, is this a serious thread?

I think you would just swap the crank to one with a shorter stroke. No biggie doing it while you are in there. Take some pics and do a write-up on how to do this.

I dropped the pan to replace some rod bearings on a jeep grand cherokee once, just to see if we could get a few months out of it before it got junked. The crank didn't look awful, threw the new bearings in and it lasted about 20 minutes before the ka klack ka klack ka klack came back. A friend told me he had done it before and had it last up to a year, but I had my doubts hahah.

What if you installed an LS2 crank, wouldn't a longer throw give you more torque down low to compete with all the TPI motors?

I think you are right. You may have to pull the heads to cut the pistons to make sure you don't have any clearance issues with the valves.

I spun 2 rod bearings in my old Firebird. It was my daily driver. I used 3 qts of Lucas oil stabablizer and 2 qts of 20W50 and the knocking went away and I drove the car for 25,000 more miles before I threw a rod!! In that time which was a yr, I found a used motor with 4,000 miles on it that I saved up to get and had it installed. Just a option. Might not be the smartest thing to do but when you got to get to work everyday!