Quote:
Originally Posted by jhowes
I have often wondered what can be done about the cam bearings in the block. If you turn down the journal on the cam to that the slop is unacceptable how do you bush the block? Also how do you measure the cam bearing surfaces in the block? Does the cast iron not wear for some reason? Jack
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Hey Jack,
A machinist who knows and has proper equipment can use bronze bushings in the stock (worn) block bearing areas(3). After the bushings are pressed in, they must be reamed to fit whatever the cam specs are. The block is measured with inside caliper / mike. I do not think that this is a job for amateur, but wouldn't be surprised if someone has done this job. I only knew J Steele to have offered this service. Sure the cast iron wears. Compensated for by building up cam bearings or bushing blk as said.
Oh, and if you buy a Donovan alum 4 cyl block, they used chev 350 cam bushings for that purpose, I've been informed.