What is the size of a stock crank bolt?
#1
TECH Regular
Thread Starter
iTrader: (4)
Join Date: Sep 2002
Location: Rostraver, PA
Posts: 498
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech20year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I need to know the actual thread size and length of the stock crank bolt so that I can get an extra bolt that is 1 to 2 inches longer to help in the removal and installation of the crank pulley on my LS1 Trans Am.
#3
TECH Senior Member
iTrader: (6)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
are you re-installing the stock pulley? That's the only reason you would need a longer bolt.
A standard 3 jaw puller will take the stock pulley off, and a standard three bolt harmonic balancer or "pulley" puller will take off the ASP or simular pulley.
A standard 3 jaw puller will take the stock pulley off, and a standard three bolt harmonic balancer or "pulley" puller will take off the ASP or simular pulley.
#4
TECH Regular
Thread Starter
iTrader: (4)
Join Date: Sep 2002
Location: Rostraver, PA
Posts: 498
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech20year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by WILWAXU
are you re-installing the stock pulley? That's the only reason you would need a longer bolt.
A standard 3 jaw puller will take the stock pulley off, and a standard three bolt harmonic balancer or "pulley" puller will take off the ASP or simular pulley.
A standard 3 jaw puller will take the stock pulley off, and a standard three bolt harmonic balancer or "pulley" puller will take off the ASP or simular pulley.
#5
On The Tree
Join Date: Dec 2001
Location: Southwestern, PA
Posts: 193
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Yes. I already put my stock pulley back on and it was a PITA. This is why I want a longer bolt. Also It will help to take off my ASP pulley just so I am not at the end of the threads on the crank(safer).
![turd](https://ls1tech.com/forums/images/smilies2/turd.gif)
time to
![The Judge](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_judge.gif)
#6
TECH Veteran
iTrader: (5)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
It's 16mmx2mm pitch, stock length is just under 3". So probably about 75mm length.
I run a longer bolt due to my ATI hub have an inch longer shoulder inside the hub.
You can get a bolt of the same alloy from Mcmaster Carr for about $3 plus shipping, but you'll need to find a large diameter hardened washer if you want to use it as the crank bolt all the time.
They have them up to 140mm length
I run a longer bolt due to my ATI hub have an inch longer shoulder inside the hub.
You can get a bolt of the same alloy from Mcmaster Carr for about $3 plus shipping, but you'll need to find a large diameter hardened washer if you want to use it as the crank bolt all the time.
They have them up to 140mm length
![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
Trending Topics
#9
TECH Regular
Thread Starter
iTrader: (4)
Join Date: Sep 2002
Location: Rostraver, PA
Posts: 498
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech20year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by y2khawk
It's 16mmx2mm pitch, stock length is just under 3". So probably about 75mm length.
I run a longer bolt due to my ATI hub have an inch longer shoulder inside the hub.
You can get a bolt of the same alloy from Mcmaster Carr for about $3 plus shipping, but you'll need to find a large diameter hardened washer if you want to use it as the crank bolt all the time.
They have them up to 140mm length![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
I run a longer bolt due to my ATI hub have an inch longer shoulder inside the hub.
You can get a bolt of the same alloy from Mcmaster Carr for about $3 plus shipping, but you'll need to find a large diameter hardened washer if you want to use it as the crank bolt all the time.
They have them up to 140mm length
![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
Thanks again Harlan and 2001Pewter