For V6 engines, begin by removing the water pump, while for V8 engines, perform all steps related to the water pump except for its removal, which can be left attached to the timing cover. Drain the engine oil and remove the oil filter, then proceed to remove the crankshaft vibration damper and unbolt all accessory brackets attached to the timing cover. For V6 engines, position the number one piston at TDC on the compression stroke, then remove the distributor. On carburetor-equipped models, remove the fuel pump, followed by the oil pan and the ignition timing indicator. For V8 engines, remove the oil pan-to-timing cover bolts and cut the oil pan gasket flush with the engine block face. Next, remove the bolts and separate the timing cover from the block, taking care not to use excessive force. For V6 engines, remove the camshaft thrust button and spring assembly, and to remove the intermediate shaft from the cover, take out the clip and slide the shaft out. When installing, for V8 engines, remove the circular rubber seal from the front of the oil pan and stuff a shop rag into the oil pan opening to keep debris out. Clean all surfaces and ensure the oil pump is properly mounted in the timing cover. For the intermediate shaft, mark it one inch from the end, insert it until it seats in the oil pump, and snap the clip onto the shaft. Ensure the camshaft thrust button and spring assembly are seated correctly, lubricate the timing chain and front crankshaft oil seal lips, and apply a thin coat of RTV sealant to the block side of the new gasket before positioning it. Attach the cover to the engine, ensuring the thrust button is properly seated, and install the bolts finger tight before tightening them to the specified torque. For V8 engines, cut sections out of a new oil pan gasket for installation between the oil pan and timing cover, attach them with contact cement, and apply RTV sealant to the oil pan-to-block joints. Lubricate the timing chain and front crankshaft oil seal lips, position the new cover gasket, and ensure the circular rubber seal and gaskets remain undisturbed. Compress the rubber seal if necessary before installing the bolts, apply pipe sealant to the threads, and tighten all bolts to the specified torque. Finally, install the remaining parts in reverse order, add engine oil and coolant, and run the engine to check for leaks.