Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

SLP harmonic balancer Slotted?

Thread Tools
 
Search this Thread
 
Old Apr 24, 2010 | 08:24 PM
  #1  
HTh3r0's Avatar
Thread Starter
Staging Lane
 
Joined: Feb 2009
Posts: 61
Likes: 0
From: Too far from home
Default SLP harmonic balancer Slotted?

I'm at the end of my cam install and I'm getting ready to put my SLP pulley on and noticed it has a "key hole" or slot on the part that slides onto the crank snout. I was wondering why this is there if there is nothing on the crank snout for this to slide into or line up with?

thanks in advance
Tyler
Reply
Old Apr 24, 2010 | 08:47 PM
  #2  
bayer-z28's Avatar
TECH Veteran
20 Year Member
iTrader: (14)
 
Joined: Apr 2005
Posts: 4,085
Likes: 1
From: N. Falmouth MA
Default

^ IIRC, that's for if you Key your crank for a blower application. Where did you get your SLP UDP from? I ordered mine form TR and they seemed to have sent me a truck pulley (last year.) I tried putting it on and hell no it didn't fit. (I was drunk)

I think it just presses on. No need to clock it. oh, tip: bake it in the oven @ 200* for a little bit to make it easier to throw on.
Reply
Old Apr 24, 2010 | 08:59 PM
  #3  
HTh3r0's Avatar
Thread Starter
Staging Lane
 
Joined: Feb 2009
Posts: 61
Likes: 0
From: Too far from home
Default

I ordered it from maryland speed.
I'm going to bake it and slide it on tomorrow.

I just tighten it to 37ft lbs with the old crank bolt then turn it 160 more degrees with the new bolt?
Reply
Old Apr 24, 2010 | 09:05 PM
  #4  
bayer-z28's Avatar
TECH Veteran
20 Year Member
iTrader: (14)
 
Joined: Apr 2005
Posts: 4,085
Likes: 1
From: N. Falmouth MA
Default

I know the initial TQ is high. but wasn't sure how much. Found this for ya.

Originally Posted by ls1howto
Crank Pulley: Ah yes, everybodies favorite part. Put the car in 5th gear, put the pulley on the crank snout, and use the OLD bolt to start pulling the pulley onto the crank. Keep tightening...it should slide on about an inch or so. Once it starts getting tight, tighten to 240ft/lbs, or as close as you can to that. I always stop at around 180-190 ftlbs and its been fine so far. Now remove the old bolt, install a new one, tighten to 37ft/lbs, then turn an additional 140 degrees. Once again, I have yet to actually be able to turn it all 140 degrees..but 90-100 has seemed to work fine so far. You'll need a long section of pipe over a very strong wrench to be able to turn it all 140 degrees.
Reply
Old Apr 24, 2010 | 09:26 PM
  #5  
HTh3r0's Avatar
Thread Starter
Staging Lane
 
Joined: Feb 2009
Posts: 61
Likes: 0
From: Too far from home
Default

its starting to look like my belt is not going to line up correctly

I hope its actually tightening and not stripping.
Reply
Old Apr 24, 2010 | 09:36 PM
  #6  
bayer-z28's Avatar
TECH Veteran
20 Year Member
iTrader: (14)
 
Joined: Apr 2005
Posts: 4,085
Likes: 1
From: N. Falmouth MA
Default

^ There's someone on here that sells home made balancer install tools. I picked one up and it works really good! I really don't like walking the balancer on with the bolt. I pulled a hair bit of thread out with mine once. Still threads in all the way and tightened fine.

Compare the snub "depth" of the new balancer with your stocker. Lay them flat on the belt side beside each other. They should sit at the same depth. That's what threw me and I found that they sent me the wrong one. Or else SLP has their part numbers screwed up if you got the wrong one too. The way mine was going to sit would have been over a half an inch OUT too far; away from the engine. it was WAAAYYY too tight putting it on and it was a fukin NIGHTMARE getting it off.
Reply
Old Apr 24, 2010 | 09:43 PM
  #7  
HTh3r0's Avatar
Thread Starter
Staging Lane
 
Joined: Feb 2009
Posts: 61
Likes: 0
From: Too far from home
Default

I have to check that tomorrow.
Thanks for all your help tonight man
Reply
Old Apr 24, 2010 | 10:16 PM
  #8  
bayer-z28's Avatar
TECH Veteran
20 Year Member
iTrader: (14)
 
Joined: Apr 2005
Posts: 4,085
Likes: 1
From: N. Falmouth MA
Default

^ Not a problem.. Just post up the results.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

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

 Verdad Gallardo
story-5

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

 Pouria Savadkouei
story-6

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

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo




All times are GMT -5. The time now is 10:15 PM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
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-5
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-6
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-7
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-8
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-9
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