<VV> engine repair question (no corvair)

[Padgett]

I have replaced bearings in an engine (OHC-6 in '68 Firebird) with a good 
crank without removing the crank before. AFAIR I loosened all the caps and 
checked all of the surfaces one at a time for finish and with plastiguage. 
Then with the crank dropped a few thousands could rotate out the old upper 
half and rotate in the new one. Piston bearings were no problem but I 
covered the exposed studs with plastic hose to avoid scratching the crank. 
Used to coat bearings with STP but imagine there are better things now. 
Think I used .001 undersize bearings. Ran fine after that & was my beater 
for a while.

Padgett