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

Pulleye.. Yes or No

Thread Tools
 
Search this Thread
 
Old 01-23-2007, 08:03 PM
  #1  
TECH Senior Member
Thread Starter
iTrader: (39)
 
TORCHD 02 TA's Avatar
 
Join Date: May 2006
Location: Chicago
Posts: 7,883
Likes: 0
Received 2 Likes on 2 Posts
Default Pulleye.. Yes or No

Will i jsut bought my cam kit, so with it all taken apart would you recommend an ASP UDP???

I have both good and bad thing with them


What do you all think???
Old 01-23-2007, 08:04 PM
  #2  
TECH Fanatic
iTrader: (1)
 
Hawk108's Avatar
 
Join Date: Apr 2006
Location: Edgewater, MD
Posts: 1,507
Likes: 0
Received 0 Likes on 0 Posts

Default

dont have one but why not do it? Id go for asp or powerbond if i were you.
Old 01-23-2007, 08:09 PM
  #3  
10 Second Club
iTrader: (22)
 
02NBMWS6's Avatar
 
Join Date: Mar 2006
Posts: 1,366
Likes: 0
Received 1 Like on 1 Post
Default

get the powerbond and be done with it man. you'll always want those few extra hp on your dyno # and would wonder without it. you have to take it off anyway, it is def the thing to do.

my powerbond was a nice looking piece and ive had zero problems with it
Old 01-23-2007, 08:46 PM
  #4  
TECH Resident
iTrader: (5)
 
greysteel_M6's Avatar
 
Join Date: Dec 2006
Location: DFW
Posts: 871
Likes: 0
Received 1 Like on 1 Post
Default

we need a poll, i vote no. I think it just helps the engine rev marginally quicker, doesn't actually net hp. I think
Old 01-23-2007, 08:55 PM
  #5  
TECH Veteran
iTrader: (10)
 
BayAreaSS's Avatar
 
Join Date: May 2006
Location: Bay Area, CA (Pittsburg)
Posts: 4,240
Likes: 0
Received 2 Likes on 2 Posts

Default

I think you should just do it since your already in there.
Old 01-23-2007, 08:58 PM
  #6  
TECH Veteran
iTrader: (1)
 
gametech's Avatar
 
Join Date: Sep 2004
Location: Stockbridge GA
Posts: 4,068
Likes: 0
Received 432 Likes on 307 Posts

Default

The only legit reason I see for underdrive pulleys is if you are spinning the motor so high your alternator explodes or your water pump cavitates. IMO, the marginal HP they free up isn't worth the hassle or expense. I would love to see testing on an engine dyno with an ls-based motor. The only scientific testing of dampers that I have seen was on old BBC's. In that instance, the heavier dampers actually made more power because of better harmonic damping. This did however, neglect the benefit of the smaller pullies in spinning the accessories slower, which is probably where their HP increases are coming from on inertia dynos.
Old 01-23-2007, 09:22 PM
  #7  
TECH Senior Member
Thread Starter
iTrader: (39)
 
TORCHD 02 TA's Avatar
 
Join Date: May 2006
Location: Chicago
Posts: 7,883
Likes: 0
Received 2 Likes on 2 Posts
Default

Originally Posted by gametech
The only legit reason I see for underdrive pulleys is if you are spinning the motor so high your alternator explodes or your water pump cavitates. IMO, the marginal HP they free up isn't worth the hassle or expense. I would love to see testing on an engine dyno with an ls-based motor. The only scientific testing of dampers that I have seen was on old BBC's. In that instance, the heavier dampers actually made more power because of better harmonic damping. This did however, neglect the benefit of the smaller pullies in spinning the accessories slower, which is probably where their HP increases are coming from on inertia dynos.

See that is my same logic.. I have no idea if it really does anything to free up power. That is $200 i can save.. Plus i hear that they give problems in the long run?
Old 01-23-2007, 10:11 PM
  #8  
10 Second Club
iTrader: (22)
 
02NBMWS6's Avatar
 
Join Date: Mar 2006
Posts: 1,366
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by TORCHD 02 TA
See that is my same logic.. I have no idea if it really does anything to free up power. That is $200 i can save.. Plus i hear that they give problems in the long run?
the power gain is 2-5 hp, nothing huge, just an every bit counts kind of thing.

and i havent suffered any problems after 10k miles at least
Old 01-23-2007, 10:12 PM
  #9  
TECH Senior Member
Thread Starter
iTrader: (39)
 
TORCHD 02 TA's Avatar
 
Join Date: May 2006
Location: Chicago
Posts: 7,883
Likes: 0
Received 2 Likes on 2 Posts
Default

Originally Posted by 02NBMWS6
the power gain is 2-5 hp, nothing huge, just an every bit counts kind of thing.

and i havent suffered any problems after 10k miles at least

yea so is $200 worth the 2-5 HP??
Old 01-23-2007, 10:19 PM
  #10  
TECH Senior Member
iTrader: (4)
 
ULTIMATEORANGESS's Avatar
 
Join Date: Mar 2003
Location: eatontown,nj
Posts: 10,976
Likes: 0
Received 17 Likes on 15 Posts

Default

ive had an ASP for yrs and no problems. id get one since youll be in there anyway.
Old 01-23-2007, 10:22 PM
  #11  
10 Second Club
iTrader: (22)
 
02NBMWS6's Avatar
 
Join Date: Mar 2006
Posts: 1,366
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by TORCHD 02 TA
yea so is $200 worth the 2-5 HP??
well, it is the 2-5 and the faster revving. I justified it this way: 200 dollars for 2-5 hp that will never need to be replaced and faster revving. and peace of mind knowing you got it. it was worth it to me.

on a budget build, no, it doesnt make sense at all
Old 01-23-2007, 11:39 PM
  #12  
TECH Addict
iTrader: (6)
 
Starz T/A 17's Avatar
 
Join Date: Jul 2005
Posts: 2,855
Likes: 0
Received 0 Likes on 0 Posts

Default

Ive seen dyno sheets that show around 10 RWHP.... and it doesnt "add" HP, all it does is regains HP that GM took away by adding a bigger pulley... worth it IMO
Old 01-24-2007, 12:24 AM
  #13  
TECH Fanatic
iTrader: (3)
 
Louie83's Avatar
 
Join Date: Jun 2004
Location: Dayton, OH
Posts: 1,844
Likes: 0
Received 0 Likes on 0 Posts

Default

I researched before I bought my pulley, and most people gained around 8rwhp with them.
Old 01-24-2007, 12:30 AM
  #14  
TECH Veteran
iTrader: (7)
 
Sharpe's Avatar
 
Join Date: Aug 2004
Location: Southeastern IL
Posts: 4,997
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by TORCHD 02 TA
yea so is $200 worth the 2-5 HP??
Only you can decide that for yourself. For me? Nope.
Old 01-24-2007, 01:44 AM
  #15  
TECH Resident
iTrader: (26)
 
dpw41285's Avatar
 
Join Date: Apr 2006
Location: Ft Wayne, IN
Posts: 969
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by gametech
The only legit reason I see for underdrive pulleys is if you are spinning the motor so high your alternator explodes or your water pump cavitates. IMO, the marginal HP they free up isn't worth the hassle or expense. I would love to see testing on an engine dyno with an ls-based motor. The only scientific testing of dampers that I have seen was on old BBC's. In that instance, the heavier dampers actually made more power because of better harmonic damping. This did however, neglect the benefit of the smaller pullies in spinning the accessories slower, which is probably where their HP increases are coming from on inertia dynos.
uh NO. hmm how many people have exploded or cavitated anything from reving an lsx motor so high!!! marginal hp (10hp avg); hassle...hell hes putting a cam in. and as far as neglecting benefits how about your acc lasting 25% longer
Old 01-24-2007, 01:48 AM
  #16  
TECH Resident
iTrader: (26)
 
dpw41285's Avatar
 
Join Date: Apr 2006
Location: Ft Wayne, IN
Posts: 969
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Starz T/A 17
Ive seen dyno sheets that show around 10 RWHP.... and it doesnt "add" HP, all it does is regains HP that GM took away by adding a bigger pulley... worth it IMO
exactly
Old 01-24-2007, 07:34 AM
  #17  
TECH Addict
iTrader: (22)
 
slow trap's Avatar
 
Join Date: Sep 2004
Location: tennessee
Posts: 2,639
Likes: 0
Received 0 Likes on 0 Posts

Default

i say get one. every little bit helps.the same hp gains can be said about a p/p tb also. there will be different opinions as expected but if you gain 5 rw that's just 20 bucks a hp,i would give that anytime,anyday.
Old 01-24-2007, 09:10 AM
  #18  
Banned
iTrader: (45)
 
lsx24's Avatar
 
Join Date: Aug 2003
Location: NC
Posts: 2,556
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Starz T/A 17
Ive seen dyno sheets that show around 10 RWHP.... and it doesnt "add" HP, all it does is regains HP that GM took away by adding a bigger pulley... worth it IMO
I also have a dyno sheet at home that shows 10 rwhp. I have also seen posts where it adds 1/10th better quarter mile E.T. Definately worth it, speed cost money, and every little bit counts.
Old 01-24-2007, 10:34 AM
  #19  
TECH Addict
iTrader: (63)
 
BitViper's Avatar
 
Join Date: Dec 2004
Location: Sandy Ego, Ca.
Posts: 2,343
Likes: 0
Received 1 Like on 1 Post

Default

Get one used....save a few bucks
Old 01-24-2007, 10:36 AM
  #20  
Internet Mechanic
iTrader: (17)
 
BlackScreaminMachine's Avatar
 
Join Date: May 2005
Location: Wallingford CT
Posts: 9,831
Likes: 0
Received 2 Likes on 2 Posts

Default

I have a friend that used ASP, never an issue, LS1's seem to gain good incomparision to LT1's If its off, why not upgrade.




All times are GMT -5. The time now is 11:47 PM.