LT1-LT4 Modifications 1993-97 Gen II Small Block V8

How to put a lt1 crank hub back on?

Thread Tools
 
Search this Thread
 
Old May 3, 2009 | 08:35 PM
  #1  
trans am you lose's Avatar
Thread Starter
On The Tree
iTrader: (24)
 
Joined: Nov 2006
Posts: 160
Likes: 0
From: High Desert
Default How to put a lt1 crank hub back on?

What is the quickest way to do this? Im having a lot of problems.
Reply
Old May 3, 2009 | 09:09 PM
  #2  
Jon@BruteSpeed's Avatar
LS1TECH Sponsor
20 Year Member
iTrader: (3)
 
Joined: Mar 2006
Posts: 664
Likes: 3
From: Under my Formula
Default

Originally Posted by trans am you lose
What is the quickest way to do this? Im having a lot of problems.
Get a harmonic balancer install tool. You don't want to beat your crank snout up and this will press her right on.
__________________
95 Pontiac Formula- Stock engine with ATI Procharger, Moser 12 bolt w/4:30 gears, Rossler trans, Neil Chance 4000 stall, M/T ET streets, 10.914@ 121.90mph, 1.452 60ft. GMHTP November 2010 Feature Car. Check it out at:
https://www.motortrend.com/features/...ebird-formula/
http://www.youtube.com/watch?v=abZ1z...ature=youtu.be

Reply
Old May 3, 2009 | 09:25 PM
  #3  
RamAir95TA's Avatar
TECH Senior Member
iTrader: (2)
 
Joined: May 2005
Posts: 9,467
Likes: 8
From: South Jersey
Default

Originally Posted by silver95
Get a harmonic balancer install tool. You don't want to beat your crank snout up and this will press her right on.
Having this makes life so much easier.

But if you don't want to spend the $50 on it, you can try and find a Grade 8 threaded 7/16-20 rod, a few BIG THICK washers and a Grade 8 nut, and press it on that way. I chose the hub install tool and am glad I did.
Reply
Old May 3, 2009 | 10:15 PM
  #4  
James Montigny's Avatar
11 Second Club
iTrader: (13)
 
Joined: May 2006
Posts: 2,843
Likes: 0
Default

You can rent an install tool from any parts store, you get a 100% refund when you bring it back.
I borrowed it so many times, I just went ahead and bought one LOL

It's essentially a threaded rod with a nice big nut and a thrust bearing.



Don't beat it with a hammer, you'll just ruin something.
Reply
Old May 4, 2009 | 06:42 AM
  #5  
SnakeOiler's Avatar
TECH Addict
20 Year Member
Photogenic
iTrader: (6)
 
Joined: Aug 2004
Posts: 2,317
Likes: 0
From: FXBG, VA
Default

Originally Posted by James Montigny
You can rent an install tool from any parts store, you get a 100% refund when you bring it back.
I borrowed it so many times, I just went ahead and bought one LOL

It's essentially a threaded rod with a nice big nut and a thrust bearing.

Don't beat it with a hammer, you'll just ruin something.


Nice pic, too.
I put one in my tool box first time my friend and I ever pulled an engine. I won't date myself with how ago that was, either
Reply
Old May 4, 2009 | 01:26 PM
  #6  
METALBEAST's Avatar
12 Second Club
iTrader: (1)
 
Joined: Dec 2003
Posts: 3,027
Likes: 0
From: Cleveland, Georgia
Default

This is the easiest way to get the hub on . Used it several times. Takes maybe 5 minutes to put on the hub.


http://members.***.net/gmarengo/Misc/Misc.htm
Reply
Old May 4, 2009 | 01:28 PM
  #7  
ss.slp.ls1's Avatar
TECH Senior Member
15 Year Member
iTrader: (36)
 
Joined: Jan 2008
Posts: 8,184
Likes: 28
From: Orange County, CA
Default

Originally Posted by James Montigny
You can rent an install tool from any parts store, you get a 100% refund when you bring it back.
I borrowed it so many times, I just went ahead and bought one LOL

It's essentially a threaded rod with a nice big nut and a thrust bearing.



Don't beat it with a hammer, you'll just ruin something.
Most parts stores carry a standard harmonic balancer tool that won't fit through the small hole in the LT1 crank hub.

Originally Posted by RamAir95TA
Having this makes life so much easier.

But if you don't want to spend the $50 on it, you can try and find a Grade 8 threaded 7/16-20 rod, a few BIG THICK washers and a Grade 8 nut, and press it on that way.
+1, that's what I did and it works great. Cheap tool that you can use over and over.
Reply
Old May 4, 2009 | 01:52 PM
  #8  
Javier97Z28's Avatar
11 Second Club
iTrader: (1)
 
Joined: Nov 2001
Posts: 340
Likes: 1
From: WPB, Fl
Default

I know everyone says "don't do it".. but I've probably done it 10-15 times..

Get a longer bolt, stack washers and pull it back on. Keep removing/adding washers as needed.

Finding a grade 8 7/16-20 threaded rod in a pinch isn't easy I found.
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 May 4, 2009 | 01:55 PM
  #9  
ss.slp.ls1's Avatar
TECH Senior Member
15 Year Member
iTrader: (36)
 
Joined: Jan 2008
Posts: 8,184
Likes: 28
From: Orange County, CA
Default

Considering that this is from a GM manual,

http://shbox.com/ci/crank_sprocket.jpg

I don't think you will have any issues using a hammer to seat the crank sprocket or crank balancer. As long as you aren't pounding the **** out of it.
Reply
Old May 4, 2009 | 02:12 PM
  #10  
RamAir95TA's Avatar
TECH Senior Member
iTrader: (2)
 
Joined: May 2005
Posts: 9,467
Likes: 8
From: South Jersey
Default

Originally Posted by ss.slp.ls1
Considering that this is from a GM manual,

http://shbox.com/ci/crank_sprocket.jpg

I don't think you will have any issues using a hammer to seat the crank sprocket or crank balancer. As long as you aren't pounding the **** out of it.
There is a tremendous difference between installing the bottom crank gear and the crank snout. The crank gear is nowhere near as tight a fit as the crank snout, as it only takes light tapping to seat the gear.

The crank snout on the other hand is an extremely tight interference fit - pounding on it is not the correct way to do it. Your front main bearings will thank you for doing it correctly.
Reply
Old May 4, 2009 | 02:14 PM
  #11  
ss.slp.ls1's Avatar
TECH Senior Member
15 Year Member
iTrader: (36)
 
Joined: Jan 2008
Posts: 8,184
Likes: 28
From: Orange County, CA
Default

Originally Posted by RamAir95TA
There is a tremendous difference between installing the bottom crank gear and the crank snout. The crank gear is nowhere near as tight a fit as the crank snout, as it only takes light tapping to seat the gear.

The crank snout on the other hand is an extremely tight interference fit - pounding on it is not the correct way to do it. Your front main bearings will thank you for doing it correctly.
I see what you are saying. Yeah, the crank sprocket goes on pretty smooth. For the record I have never used a hammer on the balancer because I made my own tool with a threaded rod, washers, and a nut. Works like a charm.
Reply
Old May 4, 2009 | 02:24 PM
  #12  
RamAir95TA's Avatar
TECH Senior Member
iTrader: (2)
 
Joined: May 2005
Posts: 9,467
Likes: 8
From: South Jersey
Default

Originally Posted by ss.slp.ls1
I see what you are saying. Yeah, the crank sprocket goes on pretty smooth. For the record I have never used a hammer on the balancer because I made my own tool with a threaded rod, washers, and a nut. Works like a charm.
Since you've never seen or done it yourself (thankfully), it takes a TREMENDOUS amount of pressure to seat the hub using only a hammer.
Reply
Old May 4, 2009 | 04:31 PM
  #13  
SoxXpupPeT's Avatar
TECH Junkie
iTrader: (34)
 
Joined: May 2008
Posts: 3,431
Likes: 1
From: Yonkers, NY
Default

i cleaned mine up real good and taped it on with a rubber mallet and then i used a longer version of the hub bolt with a washer and with alittle oil on the crank i screwed it on. just make sure everythings clean and you have afew washers so when you bottom the bolt out you can put more spacers on to get the hub on the crank flush
Reply
Old May 4, 2009 | 04:36 PM
  #14  
litch2004's Avatar
TECH Fanatic
iTrader: (1)
 
Joined: May 2007
Posts: 1,781
Likes: 1
From: Austin
Default

Originally Posted by ss.slp.ls1
Most parts stores carry a standard harmonic balancer tool that won't fit through the small hole in the LT1 crank hub.



+1, that's what I did and it works great. Cheap tool that you can use over and over.
so if the part stores dont carry one that will work on our cars, where is the best place to get one?
Reply
Old May 4, 2009 | 04:42 PM
  #15  
ss.slp.ls1's Avatar
TECH Senior Member
15 Year Member
iTrader: (36)
 
Joined: Jan 2008
Posts: 8,184
Likes: 28
From: Orange County, CA
Default

Originally Posted by litch2004
so if the part stores dont carry one that will work on our cars, where is the best place to get one?
You make one.
Reply
Old May 4, 2009 | 04:49 PM
  #16  
litch2004's Avatar
TECH Fanatic
iTrader: (1)
 
Joined: May 2007
Posts: 1,781
Likes: 1
From: Austin
Default

o ok. im about to be putting my keyed crank hub on from thunderracing and i would rather not mess that one up.
Reply
Old May 4, 2009 | 04:52 PM
  #17  
ss.slp.ls1's Avatar
TECH Senior Member
15 Year Member
iTrader: (36)
 
Joined: Jan 2008
Posts: 8,184
Likes: 28
From: Orange County, CA
Default

Originally Posted by litch2004
o ok. im about to be putting my keyed crank hub on from thunderracing and i would rather not mess that one up.
Originally Posted by RamAir95TA
...you can try and find a Grade 8 threaded 7/16-20 rod, a few BIG THICK washers and a Grade 8 nut, and press it on that way.
^^^Do what what he said. That's what I did.
Reply
Old May 4, 2009 | 05:03 PM
  #18  
litch2004's Avatar
TECH Fanatic
iTrader: (1)
 
Joined: May 2007
Posts: 1,781
Likes: 1
From: Austin
Default

Ok thanks for the help
Reply




All times are GMT -5. The time now is 09:41 AM.

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