355z28

iTrader: (8)

Ive had a couple of these sitting around that came on previous cars Ive purchased, are these even worth putting on or are they a waste of time?

What type of gains is there 5-6HP?

CamaroRacing12

iTrader: (5)

imho every lil bit helps.

NewOrleansLT1

Read this...http://ws6.com/mod-2.htm

greenZ96

iTrader: (6)

My car revs quicker, thats about the only thing Ive noticed. I bought the bbk pullies, the alternator pully didnt fit my alternator shaft (replacement alt) so Im only using the crank pully for now.

96TransAmboosted

iTrader: (8)

It does help the car rev faster for sure but it wont gain you anything else on or off the track.

robsquikz28

iTrader: (246)

on a back to back dyno with and w/o the pulley it gained 4hp but keeps my alternator spinning higher at lower rpms...which I like the most

WS Sick

Like the dyno says it a small amount, the only thing I noticed when I installed one was the belt chirp went away when it shifted into third.....lol

TwoFast4Lv

iTrader: (8)

No HP gains will show but performance will pick up. It is like putting lower rear end gears on you engine. It will rev quicker

Back in 92 I put a set of march under drive pullies on my 74 Z28 and picked up a consistant .20 in the quarter on a 12 second car

97REaper

iTrader: (11)

im taking my asp pullies off and going back to stock cause it was causing charging issues if anything...

TwoFast4Lv

iTrader: (8)

I found bumping idle 100 over stock and running a smaller alt pully fixed that issue

speed_demon24

iTrader: (6)

The piggy back ones are a waste but the asp one might be worth a little. I put one on to slow down the power steering pump and alternator on the track, not for power gains.

lt1-xjs

We have a 4 hp gain on the dyno, apparently from a set. Not the 1 hp gain from a single crank pulley from the WS6 site that everyone takes as the gospel. There are gains to be had.

ABA383

iTrader: (1)

My old Formula runs the ASP 23% underdriven pulley/balancer combo with the matching alternator pulley...been on since 1996 and picked up 3-5 rwhp across the entire rpm range on Lingenfelter's dyno back in 1996. Imho every little bit helps...Is it worth the money/hp? Thats goona be your call..

--Alan

CamaroRacing12

iTrader: (5)

how much u want for them?

355z28

iTrader: (8)

Well lucky for me I have 2 sets of them from previous cars ive owned, I just never put them on because I didnt know if they really did anything or if they were comparable with an air foil lol

Ill stick them on, Couldnt hurt anything. Im hoping an electric water pump, drag radials instead of bias ply and the underdrive pulleys will help make up for the added weight of a rollbar.

Thanks for the responses guys

Austin

projektnitemare13

iTrader: (4)

Only difference I really noticed was my A/C now feels like theres a little person behind my dash blowing air on me instead of a nice cooling breeze...but the steering feels a little less dead. Nothing felt in the seat of the pants-o-meter though

96blackz28

iTrader: (3)

I have the ASP kit, didn't really notice much. If you get one make sure if you get a kit to get the alternator pulley as well so you do not have charging issues. I ran it without the alternator pulley and voltage would drop at idle with the lights on, not safe in stop in go night traffic. I wouldn't say its a bad mod for the price, the torque gains are proven. Just posting my experiences.

James Montigny

iTrader: (13)

The underdrive set (not the piggyback) work great on H/C cars that already have a higher idle.
Cars with a stock idle often report charging issues.

I was very pleased with the way the H/C 350 felt with the 23% ASP kit.
I did not have charging issues or a/c problems. My idle was around 825.

I ran a similar set on my H/C 3.4 back in 1999, I didn't notice much (if anything)

I run a 10% underdriven balancer on my 383 with the stock alt pulley and have no issues, but I idle closer to 1050.
I don't have a/c anymore (compressor died and I don't drive it enough to care).

So, as mentioned above; minor gains but nothing spectacular.

CamaroRacing12

iTrader: (5)

I wtb that complete set. If anyone has em and wants to get rid of em pm me a price

irocurpony8489

iTrader: (2)

anyone know who has them in stock summit checkout says it will take a month.