under drive pulleys

Reply Subscribe

Thread Tools

Search this Thread

Apr 8, 2014 | 01:36 PM

#21

tnmotown

11 Second Club

iTrader: (107)

Joined: Aug 2007

Posts: 1,463

Likes: 25

From: Cali

The only time I would install an aftermarket pulley is when doing a cam swap.

Apr 8, 2014 | 09:57 PM

#22

sold horse,bought ss

Thread Starter

On The Tree

Joined: Sep 2011

Posts: 129

Likes: 0

From: waterloo,al

Quote:

Originally Posted by tnmotown

The only time I would install an aftermarket pulley is when doing a cam swap.

lol now just last week you was talking about installing one on yours. why the change of heart?

Apr 8, 2014 | 10:21 PM

#23

COSPEED2

LS1Tech Sponsor

iTrader: (7)

Joined: Apr 2008

Posts: 901

Likes: 0

You cant really "feel" 7 horsepower really. I am not sure on any of the TQ gains they provide, and that will give you the seat of the pants feel.
Even if the gains were purely psychological like an air razor or the COW booster, having a better quality balancer is always good.

Apr 8, 2014 | 11:59 PM

#24

tnmotown

11 Second Club

iTrader: (107)

Joined: Aug 2007

Posts: 1,463

Likes: 25

From: Cali

Quote:

Originally Posted by sold horse,bought ss

lol now just last week you was talking about installing one on yours. why the change of heart?

I would install an aftermarket pulley, rather then keeping the stock one. Yes to get every HP out of the car that I can.

BUT, since I see myself doing a cam swap in the near future, I'd rather waiter until then and not do the job twice.

Apr 9, 2014 | 11:21 PM

#25

sold horse,bought ss

Thread Starter

On The Tree

Joined: Sep 2011

Posts: 129

Likes: 0

From: waterloo,al

well I went ahead and installed one. I want to say it revs faster but it may just be me. i'll know this weekend if it help any at the track. if nothing else it was the last part I could buy for mine with out pulling the trans or going into the engine.

Apr 9, 2014 | 11:28 PM

#26

COSPEED2

LS1Tech Sponsor

iTrader: (7)

Joined: Apr 2008

Posts: 901

Likes: 0

If you have all that on your car, you may be maxing out your stock injectors or fuel pump. I would make sure that is spot on before too many more track passes. (if they are stock)

Apr 9, 2014 | 11:30 PM

#27

SMOKNSS

11 Second Club

iTrader: (3)

Joined: Dec 2006

Posts: 879

Likes: 0

From: Alabama

I have installed a couple of ASP pullies, although it is at the same time I have done a cam swap. I have never really had a problem out of having one.

Apr 9, 2014 | 11:31 PM

#28

COSPEED2

LS1Tech Sponsor

iTrader: (7)

Joined: Apr 2008

Posts: 901

Likes: 0

I would stay away from the ASP. I would recommend any of the others though.

LS1 Tech Stories

The Best V8 Stories One Small Block at Time

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

Pouria Savadkouei

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

Verdad Gallardo

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Pouria Savadkouei

Top 10 Most Powerful Chevy Trucks Ever Made!

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Verdad Gallardo

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Verdad Gallardo

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Verdad Gallardo

10 Camaros You Should Never Buy

10 LS Engine Myths That Refuse to Die

Verdad Gallardo

Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

Brett Foote

Apr 10, 2014 | 06:18 AM

#29

TXZ28LS1

TECH Senior Member

iTrader: (5)

Joined: Mar 2004

Posts: 6,163

Likes: 3

From: Classified

Damn is ASP that bad? I got one sitting here waiting to install. I had one on my old Z28 and i didnt have a problem with it.

Apr 10, 2014 | 07:05 AM

#30

sold horse,bought ss

Thread Starter

On The Tree

Joined: Sep 2011

Posts: 129

Likes: 0

From: waterloo,al

I went with the summit brand 25% underdrive. the install was easy and the quality looks good. it has high walls the keep the belt in place.

Apr 10, 2014 | 01:48 PM

#31

COSPEED2

LS1Tech Sponsor

iTrader: (7)

Joined: Apr 2008

Posts: 901

Likes: 0

If they have an alum hub they seem to be more problematic unless you pin the crank. I would recommend that anyway though.

Apr 10, 2014 | 06:57 PM

#32

Pharcyde50

11 Second Club

iTrader: (11)

Joined: Aug 2005

Posts: 574

Likes: 0

From: St. Petersburg, FL

I ran an ASP for 5yrs no issues and never threw a belt. I just switched to an ATI 10% when I swapped to a bigger cam. The build quality on the ATI is awesome!