SLP Underdrive pulley "I need HELP"
SLP Underdrive pulley "I need HELP" I got the old pulley off with no issues. Here is my dilema. I cannot get the new SLP underdrive pulley on because the bolt is to short. Can anyone give me an idea? Or where can I buy a M16-2.00 X 125/130mm? Thanks
I got mine at home depot. I just cut it long enough and welded the nut on to pull from. you can always use the old bolt to put it on with, and then use a new one to torque down.
as said above, use the threaded rod way not the longer bolt. a local hardware place should have the stuff to whip something up with. i used a longer bolt but would have been more comfortable with threaded rod. good luck!
On The Tree
Joined: Jun 2002
Posts: 103
Likes: 0
From: Tulsa, OK
Originally Posted by CarnivorWS.6-01
Why a threaded rod versus a longer bolt? Is there concern of pulling the threads on the crank?
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
On the tree
Joined: May 2004
Posts: 643
Likes: 0
If you can find a threaded rod they work beter. The rod threads into all of the threads in the crank, then you use washers and a nut and then just crank the nut down until the pulley seats all the way.
Then continue on with the normal SLP install directions.
Yes almost all LS1's run into this issue when installing a pulley. I even tried heating mine in the over but it did not help, I then got a longer bolt and got mine on.
Then continue on with the normal SLP install directions.
Yes almost all LS1's run into this issue when installing a pulley. I even tried heating mine in the over but it did not help, I then got a longer bolt and got mine on.
TECH Addict
Joined: Dec 2001
Posts: 2,907
Likes: 1
From: Bergen County, NJ
Do a search and you will find a huge number of horror stories from pulling pulleys on with bolts - damaged theads, stripped cranks, broken bolts, etc. IMHO it just makes no sense to chance it. Get a threaded rod, screw it in, then pull the pulley on. If you are bound to chancing it, follow the advice above and heat the pulley to 200 or so degrees in the oven and see if it will go on a good part of the way. Be sure to use a new bolt for final assembly BTW.
Originally Posted by Long Beach
Just heat up the pulley with a torch or the oven and it will slide all the way on with no problems.
oven is questionable...defintley dont use a torch...
Thanks to all for the advice. One of the members is fixing me up with the installer I need to do the job right. Of all the things I need to happen pulling the threads on the crank snout is not one. It always cost's me more when I do it myself, but I do it for the love of the game. LS1 Tech is a great place with great people. 
There is a guy in the tool section that sells a tool to do this relativly cheap. He goes by Hawk636 or something like that. Do not try to take a shortcut and **** up the threads on your crank.
Originally Posted by oange ss
oven is questionable...defintley dont use a torch...
On the tree
Joined: May 2004
Posts: 643
Likes: 0
The aftermarket pully does not have "plastic" per say, but it does have a rubber isolater that is what dampens the vibrations.
Also you will not be able to use a 2x4 or 4x4 to put the pulley on, there is just not enough room in front of the motor to use them.
Also you will not be able to use a 2x4 or 4x4 to put the pulley on, there is just not enough room in front of the motor to use them.
Originally Posted by Sneakyws6
The aftermarket pully does not have "plastic" per say, but it does have a rubber isolater that is what dampens the vibrations.
Also you will not be able to use a 2x4 or 4x4 to put the pulley on, there is just not enough room in front of the motor to use them.
Also you will not be able to use a 2x4 or 4x4 to put the pulley on, there is just not enough room in front of the motor to use them.
Bullshit!!!!!! I have done this more than 20 times to my car and others with no problems at all. 2x4 turned sideways, or a 4x4 and a ******* sledge hammer, or just a really big hammer works everytime!
