C6 Corvette General Discussion General C6 Corvette Discussion not covered in Tech
Sponsored by:
Sponsored by: Feral Industries

Underdrive Question

Thread Tools
 
Search this Thread
 
Old Aug 13, 2013 | 05:24 PM
  #1  
Slammin07's Avatar
Slammin07
Thread Starter
Instructor
 
Joined: Sep 2012
Posts: 115
Likes: 0
From: Los Angeles California
Default Underdrive Question

About to pick up a 25% UD harmonic balancer for my LS2 and I was just wondering if the smaller pulley requires a smaller belt or if the tensioner can pick up the slack.
Thanks!
Reply
Old Aug 25, 2013 | 08:35 AM
  #2  
Slammin07's Avatar
Slammin07
Thread Starter
Instructor
 
Joined: Sep 2012
Posts: 115
Likes: 0
From: Los Angeles California
Default

Bueller?
Reply
Old Aug 25, 2013 | 09:23 AM
  #3  
Gering's Avatar
Gering
Tolero Apto Victum
Supporting Lifetime
15 Year Member
 
Joined: Jul 2007
Posts: 9,669
Likes: 37
From: Woodlands TX
Default

OP: Are you going with ATI, also check out this tenisoner - http://store.katechengines.com/bille...sioner-p2.aspx
Good luck with your mods!
Reply
Old Aug 25, 2013 | 09:50 AM
  #4  
Slammin07's Avatar
Slammin07
Thread Starter
Instructor
 
Joined: Sep 2012
Posts: 115
Likes: 0
From: Los Angeles California
Default

I actually just bought this one

http://www.jegs.com/i/JEGS-Performan...51613/10002/-1

It's a Jegs name brand piece so I have some faith in it. I just hope it's not one of those "you get what you pay for" scenarios.
I was actually looking at those tensioners. I didn't want to spend the money on one if I didn't need to though. Thought I'd ask around on here first. Will the Katech take up enough of the slack from the OEM belt with the 25% UD? What would you recommend for the AC belt?
Thanks!
Reply
Old Aug 25, 2013 | 10:07 AM
  #5  
Gering's Avatar
Gering
Tolero Apto Victum
Supporting Lifetime
15 Year Member
 
Joined: Jul 2007
Posts: 9,669
Likes: 37
From: Woodlands TX
Default

I am not at the house, so I do not have all of my paper work in front of me. I believe that I have a 10% under drive from ATI plus I have the tensioner that I posted. I use "Gates' belts, but I do not have the P/N's in front of me at this time. If no one has answered your question by the time I get home tonight, then I will look and post what I have.
Reply
Old Aug 25, 2013 | 10:09 AM
  #6  
Slammin07's Avatar
Slammin07
Thread Starter
Instructor
 
Joined: Sep 2012
Posts: 115
Likes: 0
From: Los Angeles California
Default

I'd sure appreciate it!
Reply
Old Aug 25, 2013 | 02:46 PM
  #7  
truckplay's Avatar
truckplay
Melting Slicks
15 Year Member
All Eyes On Me
 
Joined: Oct 2010
Posts: 2,220
Likes: 16
From: Sugarhill Ga
Default

you will need 2 new belts. the tentioner will not make up the difference. most times the packaging gives you the recommended belt sizes in the instructions.

DO NOT FORGET A NEW BOLT & LOCTITE
Reply
Old Aug 25, 2013 | 03:10 PM
  #8  
Slammin07's Avatar
Slammin07
Thread Starter
Instructor
 
Joined: Sep 2012
Posts: 115
Likes: 0
From: Los Angeles California
Default

Thanks!
Reply

Get notified of new replies

To Underdrive Question

Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-1

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-2

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-3

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-4

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-5

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-6

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-7

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-8

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-9

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer




All times are GMT -4. The time now is 02:44 AM.

story-0
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-1
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-2
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-3
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-4
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-5
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-6
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-7
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-8
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-9
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE