Identify this bolt

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Mar 8, 2016 | 05:22 PM

ws6_bandit

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Identify this bolt

Random bolt left over during reasembly. I think its going to be something related to the shortblock. Could be the heads but I doubt it. For the life of me i cant figure out what its for. Winner gets a pat on the back. Thanks.

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Identify this bolt-tmp_21963-20160308_171010-600x1067684775779.jpg

Identify this bolt-tmp_21963-20160308_170921-600x1067913527305.jpg

Mar 8, 2016 | 05:23 PM

SStressin

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Could be the ground bolt on back of driver side head

Mar 8, 2016 | 05:46 PM

TXsilverado

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oil pan plug?

Mar 8, 2016 | 06:22 PM

ws6_bandit

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Its not the oil pan plug and is smaller than the ground bolts.

Mar 8, 2016 | 06:23 PM

ws6_bandit

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Isnt there a ground on the side of the block?

Mar 8, 2016 | 06:47 PM

99 2500

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Looks like one of the four cam plate bolts

Mar 8, 2016 | 06:56 PM

BREWS02WS6

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How about on the passenger head, in the spot where the temp sensor is on the driver side?

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Mar 8, 2016 | 07:34 PM

BREWS02WS6

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Darn. Good luck haha.

Mar 8, 2016 | 07:51 PM

#10

onebadapple98

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Looks like it could be the bolt for the transmission or oil dipstick tube.

Mar 8, 2016 | 07:56 PM

#11

ws6_bandit

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Quote:

Originally Posted by onebadapple98

Looks like it could be the bolt for the transmission or oil dipstick tube.

Too small. Oh well. Atleast there was only ine left over lol. Im sure ill figure it out.

Mar 8, 2016 | 09:07 PM

#12

Paul Bell

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That bolt holds the crank sensor to the block. I just twisted one in this past weekend.

It's the same as the cam sensor uses, 8mm x 1.25 x 20mm long.

Last edited by Paul Bell; Mar 8, 2016 at 09:15 PM.

Mar 8, 2016 | 09:16 PM

#13

Paul Bell

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Quote:

Originally Posted by SStressin

Could be the ground bolt on back of driver side head

The back of the head grounds use a full size head bolt, not a smaller hex flange head bolt.

Mar 9, 2016 | 06:49 AM

#14

ws6_bandit

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Quote:

Originally Posted by Paul Bell

That bolt holds the crank sensor to the block. I just twisted one in this past weekend.

It's the same as the cam sensor uses, 8mm x 1.25 x 20mm long.

Double checked cam and crank sensor bolts and they are both the same. Slightly longer than the one pictured above. This bolt is yellow/bronze on the threads/inside head of the bolt. The head is dirty, not oily. So likely from outside of the block. Ill figure it out.

Mar 9, 2016 | 08:57 AM

#15

Paul Bell

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I'm sure a longer bolt will fit these sensor locations.

Mar 9, 2016 | 01:15 PM

#16

gagliano7

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From: Monroe,NY

That looks like the bolt on my LQ4 that held the strap for the oil cooler lines and threaded into the side rail of the oil pan.

Mar 10, 2016 | 04:13 PM

#17

RockinWs6

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I'd be more worried about the loose nut behind the wheel.

Mar 10, 2016 | 10:23 PM

#18

shadowfirep

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maybe one of the front or rear main seal plate bolts?

Mar 10, 2016 | 10:53 PM

#19

Paul Bell

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Quote:

Originally Posted by shadowfirep

maybe one of the front or rear main seal plate bolts?

No, they're longer.

These short bolts are used to hold thin things to the block. The crank & cam sensors have a thin sheet metal tab the bolt goes through.

I think the oil pump tube to oil pump also uses this short bolt.