Main Bearing Clearance @ 1.8 with STD kings - Looking for recommendations

[BEATAV8]

I have a 109 block with program steel caps on 1-2-3. CAT steel crank and KING bearings.

I can get .0018 main bearing clearance set up with the bores on the high and the crank on the split. To get over .002" I'm going to have to use Federal Mogul bearings instead (STD and STDX)

Is .0018 too tight for this setup? Should I pony up another $200 for the federal mogul bearings to get the clearance opened up another .0005?

The engine is capable of +600HP, so I know the block is going to move around a bit. Primarily a street car with a few track days here and there, but not too often.

 

[NCTURBOS]

I'd leave them where they're at...


K.

 

[bison]

Id leave them right where they are. The engine i just assembled had exactly what you have with a .010 under CAT crank and King bearings. I have no worries about putting 800+hp through it either. At 600hp you will have no problems ever unless you detonate it.

 

[BEATAV8]

cool thanks guys