Please help me identify this hole in the back of the block
05-28-2013, 09:20 AM
#1
Safety Car
Thread Starter
Please help me identify this hole in the back of the block
What goes into this threaded hole in the back corner of my LS2 block?
The valley cover doesn't cover it (it's notched to expose it) It's not a through hole, it seems to penetrate either the coolant passage or the oil passage. Shining a flashlight down inside didn't tell me anything. Do I plug it or does something screw in, like a sensor? I can't find anything in parts diagrams or the manual...
The valley cover doesn't cover it (it's notched to expose it) It's not a through hole, it seems to penetrate either the coolant passage or the oil passage. Shining a flashlight down inside didn't tell me anything. Do I plug it or does something screw in, like a sensor? I can't find anything in parts diagrams or the manual...
05-28-2013, 09:39 AM
#2
Melting Slicks
Member Since: Sep 2003
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It's just an extra bolt hole for a valley cover, if you used an LS6 valley cover it would use that hole. They may have used it with a CTS-V or GTO application. I have both LS6 and LS2 engines here and the it's open on the LS2, used on the LS6.
You don't need all of those valley cover bolts anyway!
You don't need all of those valley cover bolts anyway!
05-28-2013, 10:17 PM
#4
Melting Slicks
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Just leave it open. It's captured and not open to the cooling system or oiling system. You could put a bolt in there if it helps you feel better, but it's not needed.
Last edited by 96CollectorSport; 05-29-2013 at 10:01 AM. Reason: Because I can!
05-29-2013, 10:38 AM
#5
Safety Car
Thread Starter
I'll just leave it as a fire hazard until the tape burns up or falls off.