Overdrive pulley... - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

4U2NV-SS · 07-18-2018, 01:30 PM

So what OVERdrive balancer set up is everyone running that is no LSA?

How much overdrive are you running, ex. 8%, 10%, 12% etc

Does ATI make a complete 8 or 10 rib pulley kit?

Thanks

hou30guy · 07-18-2018, 01:54 PM

10 rib ati 6% od here

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4U2NV-SS · 07-18-2018, 03:48 PM

NICE!!! why only 6%? because 10 rib?

^^ Can I get that part # by chance?

hou30guy · 07-18-2018, 05:58 PM

The bottom one 10 rib, 6%od is the max

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Batmanntexas · 07-22-2018, 06:48 PM

I believe Innovators West offers a 10% OD, as well as a complete pulley kit.

RedRyder · 07-23-2018, 02:17 PM

You should look at diameters instead of % with these. Innovators West say 10% but it's actually an 8" crank. The ATI 6% OD balancer is actually 8.19" so bigger than the Innovators. ATI 4% OD is 7.95" and that's what I have.

I never understood Innovator's % because they say std diameter is 7.25" when it's really 7.5" on our cars.

hou30guy · 07-23-2018, 02:26 PM

My ati od 10 rib balancer us 6% od. 8.19

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4U2NV-SS · 07-24-2018, 01:32 PM

Quote:

Originally Posted by RedRyder

You should look at diameters instead of % with these. Innovators West say 10% but it's actually an 8" crank. The ATI 6% OD balancer is actually 8.19" so bigger than the Innovators. ATI 4% OD is 7.95" and that's what I have.

I never understood Innovator's % because they say std diameter is 7.25" when it's really 7.5" on our cars.

Thank you. Good to know.

JANNETTYRACING · 07-25-2018, 09:44 AM

All of the percentage calculations were made based on the LS1 Corvette back in the 90s, GM has since changed the balancer standard size many times so what is listed as a 10% over the old LS1 might only be a 4 or 6% on the LS3.

I got bit by this back in 2010 when we purchased an IW Standard size 8 rib and ended up with less boost on a Maggie, turns out the standard size is not standard for an LS3.

4U2NV-SS · 07-25-2018, 10:55 AM

So does anyone know the standard size of a stock 2012 Camaro LS3 balancer?

Been looking online and from what I found is 7.7"

Can anyone confirm?

07-18-2018, 01:30 PM	#1
4U2NV-SS Drives: 1999 Camaro SS Join Date: Apr 2016 Location: Denver Posts: 275	Overdrive pulley... So what OVERdrive balancer set up is everyone running that is no LSA? How much overdrive are you running, ex. 8%, 10%, 12% etc Does ATI make a complete 8 or 10 rib pulley kit? Thanks

07-22-2018, 06:48 PM	#5
Batmanntexas Drives: 2012 Camaro SS (2SS) Join Date: Aug 2012 Location: Stafford, VA Posts: 1,372 View My Garage	I believe Innovators West offers a 10% OD, as well as a complete pulley kit. __________________ 745RWHP/634RWTQ on 93 @ 10psi 806/676 on E85 @ 10psi COTW 9/8/14

07-25-2018, 09:44 AM	#9
JANNETTYRACING Drives: BLUE CAMARO ZL1 1LE M6 Join Date: Jun 2009 Location: ON THE DYNO WATERBURY CT. Posts: 15,223	All of the percentage calculations were made based on the LS1 Corvette back in the 90s, GM has since changed the balancer standard size many times so what is listed as a 10% over the old LS1 might only be a 4 or 6% on the LS3. I got bit by this back in 2010 when we purchased an IW Standard size 8 rib and ended up with less boost on a Maggie, turns out the standard size is not standard for an LS3. __________________ www.jannettyracing.com Celebrating 37 years Performance parts, Installation, Fabrication, Dyno tuning, Remote custom tuning, and alignments. 203-753-7223 Waterbury CT. 06705 email tedj@jannettyracing.com

07-18-2018, 01:54 PM	#2
hou30guy Drives: 2011 convertible 2ss/rs Join Date: Sep 2015 Location: Houston Posts: 971	10 rib ati 6% od here Sent from my SM-N950U using Tapatalk

07-18-2018, 03:48 PM	#3
4U2NV-SS Drives: 1999 Camaro SS Join Date: Apr 2016 Location: Denver Posts: 275	NICE!!! why only 6%? because 10 rib? ^^ Can I get that part # by chance?

07-18-2018, 05:58 PM	#4
hou30guy Drives: 2011 convertible 2ss/rs Join Date: Sep 2015 Location: Houston Posts: 971	The bottom one 10 rib, 6%od is the max Sent from my SM-N950U using Tapatalk

07-23-2018, 02:17 PM	#6
RedRyder Drives: 2010 VR 2SS/RS M6 Camaro Join Date: Feb 2010 Location: Atlanta, GA Posts: 499 View My Garage	You should look at diameters instead of % with these. Innovators West say 10% but it's actually an 8" crank. The ATI 6% OD balancer is actually 8.19" so bigger than the Innovators. ATI 4% OD is 7.95" and that's what I have. I never understood Innovator's % because they say std diameter is 7.25" when it's really 7.5" on our cars.

07-23-2018, 02:26 PM	#7
hou30guy Drives: 2011 convertible 2ss/rs Join Date: Sep 2015 Location: Houston Posts: 971	My ati od 10 rib balancer us 6% od. 8.19 Sent from my SM-N950U using Tapatalk

07-25-2018, 10:55 AM	#10
4U2NV-SS Drives: 1999 Camaro SS Join Date: Apr 2016 Location: Denver Posts: 275	So does anyone know the standard size of a stock 2012 Camaro LS3 balancer? Been looking online and from what I found is 7.7" Can anyone confirm?