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

Underdrive Pulley bolt ?s

Thread Tools
 
Search this Thread
 
Old Mar 23, 2003 | 02:46 AM
  #1  
Judd's Avatar
Thread Starter
TECH Fanatic
iTrader: (1)
 
Joined: Nov 2001
Posts: 1,231
Likes: 0
From: Cumming Ga.
Default Underdrive Pulley bolt ?s

I just got done installing my U.D.pulley and I have a question. About how much torque is 120 degrees after 37 ftlbs? I don't have a angle meter.I have the original bolt in right now as my local dealer did not have in stock so I just tightened it the best I could. Basically I tightened it to 37ftlbs, looked at where the wrench was in location to the pulley, marked the pulley about where 120 degrees would be and tried to get it there. Well my torque wrench only goes to 160ftlbs and I didn't get to the 120 degree mark. Most likely only got to around 75-100 degrees useing my shadetree method.

I know that it's at least 160ftlbs, but dern I would have to go alot further to get it to 120 degrees. Is it absolutly necessary to go all the way to 120 degrees past 37ftlbs?

When I get the new bolt, I would like to make sure it doesn't back out. So would 160ftlbs along with some loctite blue do it?

BTW, I'm pretty happy with it. It's the 1st mod I've done that I can actually feel. Did the free mod stuff-cut back the EGR tube, T.B. coolant by-pass, throttle stop mod. Got pretty much nothing from all those by my highly tuned butt-dyno <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> .
Debaffeled the hood and sealed it to the airbox-maybe a smidge from that {maybe 1mph in the 1/4}.
Bought a lid- not alot of difference I could feel{it did help at the track though}.

I'm really happy with the pulley though. Calibrated butt-dyno says good mod., even though I know the gains are about the same as the Lid from what I've read. It feels better though-don't really know why. Actually my butt-dyno is pretty shabby. I generally can't feel less than 25 horse sneaky pete shot. I know some folks who can change oil and swear they can feel they gained 3 whopping horse power! <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" /> <img border="0" alt="[jester]" title="" src="graemlins/gr_jest.gif" />

<small>[ March 24, 2003, 02:45 AM: Message edited by: Judd ]</small>
Reply
Old Mar 24, 2003 | 04:33 AM
  #2  
Judd's Avatar
Thread Starter
TECH Fanatic
iTrader: (1)
 
Joined: Nov 2001
Posts: 1,231
Likes: 0
From: Cumming Ga.
Default Re: Underdrive Pulley bolt ?s

Anyone?
Reply
Old Mar 24, 2003 | 08:32 AM
  #3  
last of the Z28's's Avatar
TECH Enthusiast
 
Joined: May 2002
Posts: 508
Likes: 0
From: rochester,ny
Default Re: Underdrive Pulley bolt ?s

im looking to do a pulley soon too. hers a ttt for ya! <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
Reply
Old Mar 24, 2003 | 08:52 AM
  #4  
MOBE's Avatar
TECH Addict
 
Joined: Feb 2002
Posts: 2,031
Likes: 0
From: Bailey, Co
Default Re: Underdrive Pulley bolt ?s

When I did mine, I just used a 24" breaker bar, braced my feet up against the wheel, and torqued the crap out of it. 120* past the 37 lb-ft. mark is like 500 lb.-ft.! <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> I don't remember the exact number, but its up there. You more than likely will not be able to get it the full 120*, I couldn't, and I'm no wuss! (6'2", 230lbs)

Good Luck! <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
Reply
Old Mar 25, 2003 | 01:34 AM
  #5  
Judd's Avatar
Thread Starter
TECH Fanatic
iTrader: (1)
 
Joined: Nov 2001
Posts: 1,231
Likes: 0
From: Cumming Ga.
Default Re: Underdrive Pulley bolt ?s

Thanks man, I was a bit worried about not being able to get to the required angle. Good to hear that "good and tight" will work.
Reply




All times are GMT -5. The time now is 04:23 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