List,
I am getting the block, crank, rods, cam and head ready to take off to the
machine shop. I see the two plugs on the side and one in the back and one
for the cam. These all need to come out, right ? There are two more small
plugs recessed into the block. Do these need to be drilled out ? On the
British engine I rebuilt, these were brass and you drilled most of them out
and tapped the remainder for a brass plug. Is it the same. What size hole do
you drill and what is the thread pitch you tap the hole for ? Also how do
you remove the dip stick tube ?
The engine is a 1960 235.
While I'm at it. The head does not have two oil plugs behind the lifter
cover, just one in the upper middle. I know all these engines were hydraulic
by 1960. Did they stop drilling both holes ? I was told the 848 casting was
the better head to start with because it had improved breathing. But I was
thinking of running mechanical lifters, and you need the oil line for this.
Can the head be drilled to add the other end of the oil line ?
Sorry for the greenhorn type questions. Trying to do most of the work
myself, with all your help that is.
Bill Schickling
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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