MikeWS6

No still got the 10 bolt. Need a 9" first.

chrysler kid

iTrader: (14)

Since there are a few sponsors visiting this thread I am wondering if the smaller pulley will increase engine vibrations, or what could possible side effect be from a new under drive pulley. I want to use my ac and prefer street ability over maximum horse power

Thanks

senicalj4579

iTrader: (41)

Yeah do that i'll need one eventually too. Cant do it yet though my trans is going out and just bought a flt4. Going with a bigger stall too so it will be faster

COSPEED2

iTrader: (7)

I have never seen nor felt one make any extra/other vibration period, but the actual forces the pulleys are made to absorb cannot normally be felt unless you are possibly riding on top of the engine itself.

manzo81maro

I have the powerbond 25%, it's smaller but actually heavier than stock by a little, I think this would help engine dampening

demonspeed

iTrader: (7)

What rock have most of you been living under?! UDP have been around forever. TPI motors, 5.0's (the pushrod kind), etc... Always a good mod to do when doing the other bolt ons. I've never really understood why the LS1 community seems to shy away from them. Perhaps not enough "experts" have embraced them

Anyway, I wrote about my SLP pulley experience last year: https://ls1tech.com/forums/generatio...nd-pulley.html

Chris25

iTrader: (1)

Not to thread jack but how are they on A4's ive been thinking about picking up one of the Powerbond 25% UD pullies but Ive seen some stories of charging issues with them. I DD my car now and get stuck in traffic from time to time.

COSPEED2

iTrader: (7)

They work great. If you have a weak cooling system you will find out but most people do 160* stat off the bat and always have good luck.

dr_whigham

iTrader: (49)

Bingo. There's no downside at all to a 160* stat. As a matter of fact, when I got the Vette tuned Geoff gave me a bit of an ear-full for not having it done yet

Mike Morris

iTrader: (55)

Been running the SLP/Powerbond on my auto since 2010. No trouble.

Baconz28

Which one yall recommend from ati... A 25 percent or 10 percent on a all motor street car ?

COSPEED2

iTrader: (7)

Id recommend the powerbond 25%. Save some dough and still have a high quality balancer. Someone said they heard ati doesnt recommend their 25% balancer at all but they still make one which is odd.

dr_whigham

iTrader: (49)

Bacon, having ran the PB in the past, I agree. Save the coin and run one. They're great balancers

Chris25

iTrader: (1)

Ya I already have the 160 tstat im definitely going to be picking up one of the powerbond 25% ud pullies.

1994_383_Z28

iTrader: (1)

I just ordered a powerbond 25% ud pulley from speed inc. It came out to be $168. shipped.

I'm assuming it doesn't come with belts... So does anyone have a link to the correct belts for the powerbond 25% pulley?

COSPEED2

iTrader: (7)

Their Powerbond are still $178.99 and do not include a new gm bolt. You will def need one. They will run you about $8 or so, and most places wont ship an $8 part for free either.

94formulabird

I found a SLP for $75 around here off craigslist. No bolt, but I can just grab a new balancer bolt from GM correct?

COSPEED2

iTrader: (7)

Correct. 12557840 is the part number for the bolt.

94formulabird

Thanks coSPEED, this is 2x today you've helped me! Should have it on by next week, will report back!

cdubbzz

iTrader: (11)

And there ya have it lol