Jeep Strokers

Trying to put my 4.6 build together, stuck on main bearing clearance.
I plastiguaged the mains and found the front 4 showing approx .0020” while the back 3 are showing close to .0030”.
I then purchased a budget 2-3” micrometer and a dial bore gauge to make measurements.
Running the scat/eagle 4.2l crank.
I have standard sets of both King and Mahle Clevite bearings.
The kings measure up at about .0035” clearance and the mahles about .003”.
Strange the plastigauge shows approx .001” dif. between front 4 journals to back 3, but when measuring I cant pick up much of any difference.
Service manual calls for .0010-.0025”.
Hearing engine builders will use the .001” for every 1” of crank journal diameter rule of thumb, our cranks are 2.5” so that gives us a .0025” target.
Summit does carry Crown .002” undersized bearings for the 87-90 blocks, (J8133682 mains) (J8133683 thrust)
.002” undersize would put me at .0010-.0015” theoretically, which is probably too tight.
Haven't been able to source .001” under bearings
I could grab .010” undersize Mahles and have the crank ground to match.
Maybe a shop would be able to polish a crank down by .001” to make the .002” under bearings work?
Or I just run it with the mahles and hope my ~.003” clearance is okay. (~.0005” over the max spec)
How much bearing clearance would you tolerate?
Seeking any advice, bearings aren't cheap either so trial and error is pricey.
Am I making a bigger deal out of these numbers than I should?
What would you do?
Photos attached to help show what Im seeing.

Try to get the bearing clearances within spec by whatever means necessary 'cause otherwise you'll find the oil pressure will be too low when the engine's hot.

The difference using Plastigauge is maybe a slight bow in the block or crank. Was the block line bored?

mpgMike wrote: ↑April 28th, 2025, 10:00 am The difference using Plastigauge is maybe a slight bow in the block or crank. Was the block line bored?

The block was not line-honed, I skipped that step thinking it wouldn't be necessary. Maybe I was mistaken :0 the crank is brand new from eagle.

Well I took it in to a local machine shop and they confirmed my clearances on both main and rod bearings were out of spec,
they measured the eagle crank and determined it was ground under sized. Had the crank ground for 0.010" undersized bearings, not cheap.
CHECK YOUR PARTS WHEN YOU GET THEM. I've had horrible luck with multiple parts all the way through this stroker build. Clearwater cylinders screwed me over on 3 consecutive cylinder heads, had to have the whole the Re-Re-maned, no help at all from them, In fact they made me pay return shipping for a very obviously cracked head.