Starter bolt size?

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Oct 31, 2013 | 08:36 AM

FLYNAVY30

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Starter bolt size?

Does anyone happen to know what size the bolts are for the starter on an LS1?

Thanks!

Oct 31, 2013 | 08:49 AM

conan

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From: Back in the Burg

Both bolts are 11mm in diameter, 1.5 thread pitch. 1 bolt measures 114mm long and the other is 54mm long, grade 10.9.

11mm X 1.5 X 114mm
11mm X 1.5 X 54mm

Oct 31, 2013 | 08:58 AM

FLYNAVY30

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Awesome, thanks very much....next time Im going crate motor if for no other reason than Im sick of tracking down random bolt sizes!

Oct 31, 2013 | 09:07 AM

conan

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From: Back in the Burg

Quote:

Originally Posted by FLYNAVY30

Awesome, thanks very much....next time Im going crate motor if for no other reason than Im sick of tracking down random bolt sizes!

I hear ya, I just happend to have my starter with the 2 bolts sitting on my desk this morning.

Oct 31, 2013 | 10:48 AM

FLYNAVY30

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much appreciated

Oct 31, 2013 | 11:43 AM

Scoggin Dickey

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From: Lubbock, TX

Gm lists the starter bolts as M10 x 1.5

M10x1.5x46.5
M10x1.5x120

Some applications actually use two of the long bolts, which is starter dependent ofcourse

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Oct 31, 2013 | 12:14 PM

conan

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From: Back in the Burg

Quote:

Originally Posted by Scoggin Dickey

Gm lists the starter bolts as M10 x 1.5

M10x1.5x46.5
M10x1.5x120

Some applications actually use two of the long bolts, which is starter dependent ofcourse

Sorry to the OP I threaded a die on my bolts this morning and thought I grabbed the 11mm x 1.5. I just rechecked after his post ^^^ and my bolts are M10 X 1.5 as well.

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Oct 31, 2013 | 10:33 PM

01ssreda4

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From: Turnin' Wrenches Infractions: 005

Dorman sells them in the HELP section of the auto parts stores!

Apr 30, 2014 | 08:37 PM

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S8ER95Z

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From: NC

Can someone confirm... Is the ls1 starter bolt the same as the 3.8l bolt?

May 26, 2017 | 10:32 PM

#11

SMKE EM

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From: Oak Lawn

Quote:

Originally Posted by conan

Both bolts are 11mm in diameter, 1.5 thread pitch. 1 bolt measures 114mm long and the other is 54mm long, grade 10.9.

11mm X 1.5 X 114mm
11mm X 1.5 X 54mm

This needs to be deleted or edited from the thread. I just purchased a helicoil kit for m11 x 1.5 because of it.

I took a caliper to the threads, they are indeed M10, not M11

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Starter bolt size?

Starter bolt size?

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