after removing oil pump and whatever else is in the way I would remove the piston/rod assembly from the bottom. Then remove the crankshaft for visual inspection The "whatever else" will be the crankshaft. Pistons won't come out the bottom with the crank installed.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
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