Impala Tech - View Single Post - The S-I-L's 66 Caprice Engine Bay Restro
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post #144 of (permalink) Old 04-23-2016, 04:53 PM
Big Dave
Join Date: Jan 2006
Posts: 12,886
I have seen the timing chain hit in the back of the gear cavity on the block a few times, but that is the first one that I have seen hit the cover. The cam generally is pushed to the rear of the block by the valve spring pressure pushing at the slight angle formed between the top of the cam lobe and the concave bottom of the flat tappet lifter. Oil pressure pushes the cam forward again as the rear of the cam tunnel is part of the oiling system. Were you running an excessive oil pressure (high pressure oil pump)?

Big Dave
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