Oil Line Mystery
03-30-2009, 02:41 PM
#1
Oil Line Mystery
I am restoring a 64 corvette with a 327 300 HP with Power Glide. I did not take my car apart but I am putting it back together. I have a mysterious hole in my block just above the casting for the oil filter which is 1/2 in in diameter and not threaded. I can see the oil filter canister bolt inside the block. What is this hole for and how does one close it?
03-30-2009, 03:12 PM
#2
Team Owner
Member Since: Oct 2000
Location: Washington Michigan
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That's the outboard end of the main oil gallery - that hole should have a steel cup plug in it; don't recall the size offhand. See photo below. 
03-30-2009, 03:26 PM
#3
Melting Slicks
Like John I don't recall the size either
but it's the same as the 3 gallery cup plugs on the front of the block.
When you put it in, use a sealant. I had a pretty good leak when I installed one dry. Used red loctite on the second attempt and it is bone dry 500 miles later.
When you put it in, use a sealant. I had a pretty good leak when I installed one dry. Used red loctite on the second attempt and it is bone dry 500 miles later.