engine mount nut size?

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Sep 12, 2023 | 07:09 PM

mcm95403

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Le Mans Master

Joined: Nov 2009

Posts: 6,882

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From: Bangkok, Thailand

engine mount nut size?

Well, for the life of me I can't find the 2 nuts for the bottom of the engine mounts after doing all the cam/head work.

Anyone know what size they are?

Sep 12, 2023 | 07:20 PM

torquetube

Le Mans Master

Joined: Dec 2004

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From: West coast CA

Quote:

Originally Posted by mcm95403

Well, for the life of me I can't find the 2 nuts for the bottom of the engine mounts after doing all the cam/head work.

Anyone know what size they are?

They're M12x1.75, 14mm tall flange nuts. The bottom nuts are the same as the top nuts.

The part number for real GM ones is 11516078.

Sep 13, 2023 | 06:30 AM

mcm95403

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Le Mans Master

Joined: Nov 2009

Posts: 6,882

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From: Bangkok, Thailand

Quote:

Originally Posted by torquetube

They're M12x1.75, 14mm tall flange nuts. The bottom nuts are the same as the top nuts.

The part number for real GM ones is 11516078.

Thank you sir!

Sep 13, 2023 | 01:50 PM

mcm95403

Thread Starter

Le Mans Master

Joined: Nov 2009

Posts: 6,882

Likes: 234

From: Bangkok, Thailand

Quote:

Originally Posted by torquetube

They're M12x1.75, 14mm tall flange nuts. The bottom nuts are the same as the top nuts.

The part number for real GM ones is 11516078.

Sometimes I wonder how we worked on cars 30+ years ago before forums like this. It's amazing the help we can get and give here.

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