What steps should be followed before installing the piston and connecting rod assemblies on Chevrolet Astro?

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Before the piston and its respective connecting rods are fixed on the engine, it is required to check if the cylinder walls are free from deposits, the top edges of each cylinder are peened, and the crankshaft is inserted into the engine block. Bolt off the cap of the No 1 connecting rod, and replace the bearing inserts with the new ones, and clean the bearing surface of the rod lightly with a clean cloth. Clean the back side of the new upper bearing half and bring it into the connecting rod in such way that the tab should fit into the recess without hammering the tab into position and damaging the bearing face. Do this same thing with the other bearing insert that sits in the rod cap also ensure that all mating surfaces are clean and free from oil. Make sure that positions of the gap of the piston rings are at intervals of every 120 degrees, apply a few drops of clean engine oil at the land of the piston and the ring, fit the piston ring compressor in such way that ¼ inch of the piston skirt comes out. Turn the crankshaft such that the number one connecting rod journal is at the bottom dead centre, then apply a liberal coat of oil on the cylinder walls. Place the piston/connecting rod assembly into the cylinder bore, so that to the notch would look forward and the ring compressor should be in contacting the block. Hit the piston lightly with wooden hammer handle and ease the connecting rod over the crankshaft journal carefully if one feels any rigidity. When the connecting rod is in position, it is recommended that one should check the bearing oil clearance before finally tightening the cap of the rod. Place a thin layer of Plastigage on the journal of the connecting rod, apply clean oil on the rod cap bearing face and finally screw and align the cap against the marks on the journals. Make up the nuts to the required torque in that sequence while the crankshaft is immobilated. The upper part of the check rod was also protected with Plastigage and lifting the rod cap cautiously allowed getting a clearance on this scale as no dirt or oil would appear to have influenced the width on the Plastigage. Scrape of any Plastigage material from the rod journal surface and bearing face, spread a fresh layer of moly-base grease or engine assembly lube on the rod journal and fit the rod again on the journal. Anchoring the rod cap nuts to the appropriate amplitude of torque, do the same for the other staying assemblies while at the same time ensuring that all the components are free from dirt. It is only possible to do this after next all the assemblies are installed, rotate the crankshaft manually, and at the end of this process, measure the connecting rod end play and adjust, if it has deviations from the norm.

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