Conversions & Swaps LSX Engines in Non-LSX Vehicles
Sponsored by:
Sponsored by:

Starter and alternator nuts

Thread Tools
 
Search this Thread
 
Old Dec 14, 2008 | 06:03 PM
  #1  
cacmanjr's Avatar
Thread Starter
11 Second Club
iTrader: (14)
 
Joined: Jun 2008
Posts: 317
Likes: 0
From: Chicago
Default Starter and alternator nuts

My LS1 swap into the 66 Skylark is coming along slowly but surely. The '98 motor I am swapping in did not have the large or small nuts on the starter or the nut on the output terminal of the alternator. Anybody have any idea what size and thread I need to buy? Are they metric or sae? Thanks in advance for any help. Hope to be up and running before springtime.
Reply
Old Dec 14, 2008 | 11:04 PM
  #2  
V8Rumble's Avatar
TECH Fanatic
iTrader: (9)
 
Joined: Aug 2007
Posts: 1,237
Likes: 1
From: Rocky Mtn thin air & snow...
Default

Here's a free 'bump' for ya, since I'll probably need 'em for my swap too...

Got any pics?
Reply
Old Dec 15, 2008 | 12:10 AM
  #3  
montyafteryou's Avatar
Staging Lane
iTrader: (3)
 
Joined: Sep 2007
Posts: 52
Likes: 0
From: Ann Arbor Michigan
Default

just go to the parts store look at the same alternator their that has them on and find out Bam..
Reply
Old Dec 15, 2008 | 07:38 AM
  #4  
cacmanjr's Avatar
Thread Starter
11 Second Club
iTrader: (14)
 
Joined: Jun 2008
Posts: 317
Likes: 0
From: Chicago
Default

Thanks for the responses, guys. V8Rumble, I will post up the sizes here if another member doesn't. Montyafteryou, most parts stores close by do not have a decent selection of metric fasteners. I may have to pull the starter and alternator and take them to a hardware store. I was just hoping someone here would know.
Reply
Old Dec 15, 2008 | 10:19 AM
  #5  
Pop N Wood's Avatar
TECH Junkie
iTrader: (1)
 
Joined: May 2006
Posts: 3,402
Likes: 8
Default

Everything on an LS motor is metric.

I ordered a set from GM direct. I got the part numbers out of an LS swap guide I had. I will have to look at home, but if I can find the order easily enough I will pass it on.

No promises.

GM is actually a good source for this stuff. Pricing isn't too bad and they have the proper coating on them.
Reply
Old Dec 15, 2008 | 06:09 PM
  #6  
eviltwin_1987's Avatar
TECH Fanatic
iTrader: (18)
 
Joined: Sep 2006
Posts: 1,002
Likes: 0
From: Nor Cal
Default

i need this too.
Reply
Old Dec 15, 2008 | 06:59 PM
  #7  
iansane's Avatar
TECH Regular
 
Joined: Apr 2005
Posts: 415
Likes: 0
From: Bothell, WA
Default

I don't see a part number for the smaller nut on the starter but the larger one is 11501085 with a size m8x1.25. And in keeping with GM Parts Bin engineering, the alternator nut is the same size.
Reply
Old Dec 15, 2008 | 08:25 PM
  #8  
cacmanjr's Avatar
Thread Starter
11 Second Club
iTrader: (14)
 
Joined: Jun 2008
Posts: 317
Likes: 0
From: Chicago
Default

Originally Posted by iansane
I don't see a part number for the smaller nut on the starter but the larger one is 11501085 with a size m8x1.25. And in keeping with GM Parts Bin engineering, the alternator nut is the same size.
Thanks iansane. That much helps a lot. Anyone have the size of the other nut? BTW, I looked up the part number above and it is a whole $1.57 from Chevy. Finally something cheap!
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Dec 15, 2008 | 09:17 PM
  #9  
iansane's Avatar
TECH Regular
 
Joined: Apr 2005
Posts: 415
Likes: 0
From: Bothell, WA
Default

No problem; I work in a chevy parts department so anytime I need part numbers/sizes for my swap I just have to go to work.
Reply
Old Dec 20, 2008 | 04:24 PM
  #10  
cacmanjr's Avatar
Thread Starter
11 Second Club
iTrader: (14)
 
Joined: Jun 2008
Posts: 317
Likes: 0
From: Chicago
Default

Smaller nut is M5. They were not in stock at the dealer and they did not have a part number for them. They gave me on off of a new starter and I matched it up at a hardware store.
Reply




All times are GMT -5. The time now is 01:47 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE