here is history time line of a 4.15 stroke Eagle crank...Back then they werent many choices for 4.15 cranks.

2003
Assembled the engine and installed in a 69 Dodge Coronet Superbee clone. It had Edelbrock heads and was a 100% street car..It seen plenty of track time
2004 decided it was time to upgrade the engine for more power..
Set of 440-1's and topend from Muscle motors..
Ran the car until fall of 2005. At this point it was more race than street.
Pulled the engine and installed in a 1987 Dodge Dakota. Ran it with a stock 6 quart pan, and HV oil pump and non restricted Indy oiling kit...Yep..Sucked the pan dry smoked 2 rods. Had the crank turned .020, new rings..Seen some cap walk. reassembled it. Now the engine has the same main bearings after all that...They looked new. New rings etc. Had the heads ported, installed a large roller cam.
Raced it till fall of 2007..who knows the passes I put on this thing...It was a Guinea pig, I tested and sorted out carbs,converters, alky injection systems you name it.

Sold the short block to a friend, then he sold it to another friend..Now its between the rails of a 84 Model Ram Charger for mud pit racing.
It died early this year when his 440 Source heads sprung a leak..He could have saved it if he would listen..I told him to pressure check the head...he tried to make that weekend race and just replaced a head gasket which wasnt the problem. Trashed the engine after this.

That crank with stood more abuse than about anyone could dish out, and endured a bunch of punishment, and War wounds along the way.

It had the same main bearings in this engine from day one until it death in fall of 2009 RIP old friend.

When the engine had all the upgrades done, it was probably making a true 700hp..
The Little Dakota would pull the front tires two feet high and run 114mph in the 8th mile at 3400 lbs.

The crank was always mag'd when apart looking for cracks...I guess I just got a good one...
This was the same crank OOTB that wasnt exceptable to run..Journals had some taper, and was way on the max limit on the big end mic scale..So it was turned before it was even ran. Back then these cranks were $850 and I had another $100+ in correcting it...My machinist can balance a engine for sure..Never have bearing trouble.