Genuine 1985 Chevrolet El Camino Cylinder Head

1985 Chevrolet El Camino Cylinder Head Parts Questions & Experts Answers

• Q:

  What are the steps involved in overhauling cylinder heads in V8 engine on 1985 Chevrolet El Camino?

  Posted by Agop K.

  A:

  As a rule the heads for the GM engines are offered both new and remanufactured at the dealers and auto parts stores. Because heads cannot be easily removed and mechanically inspected, and it may be impossible to buy individual parts in general stores, it may further be advisable for the home mechanic to acquire new heads and fit them instead. However, the cylinder heads may be transported to a competent automotive machine workshop or a GM dealer for the overhaul exercise. If the complete engine is being overhauled simultaneously it is perhaps, wise to consider the following information. If one decides to replace the cylinder heads, there are things that should be understood in regard to the process, tools and spares to used. Start by using a valve spring compressor, obtainable from GM dealers or auto parts merchants, to reduce tension on each of the valve springs and take out the valve locking keys, one valve at a time. Remove the keys, and then let go the spring, followed by the withdrawal of spring cap, spring shield, spring and at last the spring damper where ever provided and put all these valve mechanism parts in a number box or stand having number box facility used in removing the cylinder head to assemble in sequence separately in a cylinder head assembly line. Thirdly, gentle manner remove the oil seals situated at the stems of each valve, when refitting ensure to fit new oil seals and take out every spring shims fitted at the underside of the valve spring. Last, take out each valve one by one and put them in the numbered box or rack so as to do away with the valve mechanism, and the components of the valve should not be mixed with other in such a way that may delay the work.

  Answered by GM Parts Specialist Raul / Aug 21, 2022