|Replacing Chevy 350 Engine Crankshafts|
Chevy 350 engine crankshafts can have a casting number which is to be found on one of the uneven finished throws towards the front of the crank. In the case of Chevy 350 engines, cast nodular iron as well as forged steel types of crankshafts are on offer. The forged cranks are more expensive in production and hence are usually used only in the case of high performance applications such as, truck.
Chevy 350 engine forged crankshafts can be easily identified as a forged crank will show a wide parting line running down the length of the crank. In comparison the cast crank has a thin parting line. The forged crankshafts have been tufftrided. Tufftrided is the chemical heat treating process by which the bearing journal surfaces are hardened. Once the crank is tufftrided it acquires a dull grey color. Chevy 350 engine cranks used in quite a few applications are cross-drilled, which helps to ensure that the main bearings are constantly oiled.
To replace a Chevy 350 engine crankshaft some decent tools are all that are required. It is also possible for a first timer to replace Chevy 350 engine crankshafts. However, it is not a quick job affair for the novice. The water pump has to be removed first for which one has to go initially to the TDC. With a dampner pulley remove the water pump, and then pull the crank pulley and harmonic dampner. While removing timing cover and timing gears one has to make certain that the alignment marks are noted. Go to the back of the engine, mark the distributor shaft local, note the position of the rotor, loosen and pull out. While doing the lifters, loosen or compress rockers and pull pushrods, then remove the manifold with associated stuff. From here it is simple. Remove each lifter noting its location. Once the cam is out, replace cam bearings and check the cylinder walls.
At the time of installing the new Chevy 350 engine crankshaft use the recommended break in lube without fail. Turn by turn install the cam, then the lifters followed by the manifold. Once these have been installed, attach the rods, rockers, diso, timing gear/chain, cover, balancer pulley and water pump. Take proper care to ensure that the alignment of all marks is done properly. Always make sure the timing is right and have it double checked by someone so that it is verified and you don't face any problems after installing the Chevy 350 engine crankshaft.
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