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

which u/d pulleys

Thread Tools
 
Search this Thread
 
Old Feb 26, 2015 | 10:06 PM
  #1  
buddy35thle's Avatar
Thread Starter
Staging Lane
 
Joined: Nov 2014
Posts: 95
Likes: 0
Default which u/d pulleys

Ima do a cam swap soon Got all my parts oordered. Tsp torquer v2 cam 113lsa, hooker long tubes, tsp ory, slp loudmouth2, yank ss 3600, 80 mm throttle body. Since the pulleys are coming off i wanna get some underdrive pulleys should i get crank and alternator at 25% u/d
Reply
Old Feb 26, 2015 | 10:08 PM
  #2  
buddy35thle's Avatar
Thread Starter
Staging Lane
 
Joined: Nov 2014
Posts: 95
Likes: 0
Default

Also which brands would u recommend
Reply
Old Feb 26, 2015 | 10:30 PM
  #3  
DANOZ28's Avatar
TECH Fanatic
iTrader: (1)
 
Joined: Jul 2006
Posts: 1,214
Likes: 0
From: MPLS MN
Default

lots of threads on the subject , plenty of posters say the expensive ati is the only way to go. i like slp parts but i chose the lowest cost 25% ud pulley. after 2.5 months i had alternator trouble so i would recommend an overdrive alternator pulley. cheers!
Reply
Old Feb 26, 2015 | 11:05 PM
  #4  
99Bluz28's Avatar
TECH Senior Member
iTrader: (35)
 
Joined: Nov 2007
Posts: 9,705
Likes: 12
From: C. V., Kalifornia
Default

No need for a OD alt pulley, just bump up the idle speed to offset 25% slower rotate speed IF you have alternator charging/output issues. IMO, the best reason to go with a aftermarket Crank pulley is for it's better harmonic dampening ability. So in that regard I recommend going with either a Fluidampr, or ATI, or just staying with the factory crank pulley unless it needs to be replaced .
Reply
Old Feb 26, 2015 | 11:07 PM
  #5  
bane89's Avatar
12 Second Club
iTrader: (3)
 
Joined: May 2013
Posts: 48
Likes: 0
From: So·Cal
Default

I run an ASP UD pulley... Had it on over a year now with no isses. I do recommend a alternator pulley also.

only because the voltage drops Little lower but it hasn't effected the cars performance or charging issues.
Reply
Old Feb 26, 2015 | 11:14 PM
  #6  
buddy35thle's Avatar
Thread Starter
Staging Lane
 
Joined: Nov 2014
Posts: 95
Likes: 0
Default

I definetly wanna do a crank pulley. I dont plan on running a high powered stereo at all i just wanna squeeze out all the power i can with bolt ons. I know different brands have high retaining walls for less belt slippage is slp one of those brands?
Reply
Old Feb 27, 2015 | 05:56 AM
  #7  
ULTIMATEORANGESS's Avatar
TECH Senior Member
20 Year Member
iTrader: (4)
 
Joined: Mar 2003
Posts: 10,985
Likes: 23
From: eatontown,nj
Default

powerbond is an excellent pulley.
Reply
Old Feb 27, 2015 | 06:27 AM
  #8  
TXZ28LS1's Avatar
TECH Senior Member
iTrader: (5)
 
Joined: Mar 2004
Posts: 6,163
Likes: 3
From: Classified
Default

Running ASP..
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 Feb 27, 2015 | 07:00 AM
  #9  
Robert Cantu's Avatar
On The Tree
iTrader: (2)
 
Joined: Nov 2014
Posts: 149
Likes: 2
From: Cresson, TX
Default

I've got a fluiddampened March set saw one for sale on ebay awhile back I think it was discontinued but I would do a March if you can still find one for sale or ATI!
Reply
Old Feb 27, 2015 | 07:46 AM
  #10  
1fastls1ss's Avatar
Launching!
15 Year Member
iTrader: (7)
 
Joined: Mar 2005
Posts: 235
Likes: 0
From: Florida
Default

Powerbond and SLP are the same pulley (made byPowerbond and reboxed by SLP). I have a Powerbond on mine. With the cam it's going to bump up your idle anyway, so you should't have any issues with the alternator.
Reply




All times are GMT -5. The time now is 09:35 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