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6.0 iron block...extra hole in block by knock sensor?..help

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Old 09-17-2017, 10:35 AM
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Default 6.0 iron block...extra hole in block by knock sensor?..help
Anyone know what this hole is for? Just installed the engine and just noticed it. At first thought it was the dip stick hole.
Its not threaded . It's the hole just to the left of the knock sensor threaded hole
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Old 09-17-2017, 11:02 AM
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The dipstick tube is a tight push fit into the hole. I've never seen a threaded dipstick hole yet.
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Old 09-17-2017, 12:49 PM
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It's not for the dip...dip hole is in the pan...this hole is in the block
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Old 09-17-2017, 12:56 PM
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That's a dip stick hole for a truck application.
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Old 09-17-2017, 01:05 PM
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Oh
mske sense
now what can I do
2 dip sticks lol
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Old 09-17-2017, 01:07 PM
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Plug it. Maybe silicon in a vacuum nipple???
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Old 09-17-2017, 01:11 PM
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Think RTV sealer??
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Old 09-17-2017, 01:14 PM
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Yeah, i would probally try to fit something like a vacuum nipple in with some RTV
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Old 09-19-2017, 01:19 PM
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Gm makes a metal freeze plug type plug for that hole. I have one in my aluminum block.
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Old 09-19-2017, 01:26 PM
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Whatever you do, it has to be sealed up or the PCV system won't work right.
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Old 09-20-2017, 09:52 AM
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Originally Posted by dw456post
Gm makes a metal freeze plug type plug for that hole. I have one in my aluminum block.
I think they're in the G8 V8 blocks too since the dipstick is in the oil pan.
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Old 09-20-2017, 06:09 PM
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Originally Posted by KCS
I think they're in the G8 V8 blocks too since the dipstick is in the oil pan.
Does this Sound right??? I wonder if this is the correct size for an LS block???

12557520 PLUG,OIL LVL IND TUBE HOLE(CUP-.390IN OD,.040IN THK,STEEL)
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Old 09-21-2017, 09:51 AM
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Originally Posted by 1FastBrick
Does this Sound right??? I wonder if this is the correct size for an LS block???

12557520 PLUG,OIL LVL IND TUBE HOLE(CUP-.390IN OD,.040IN THK,STEEL)
Yeah, that sounds like it's it. Good find.
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