Best Harmonic balancer for supercharged LS3 ?

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Apr 22, 2020 | 04:53 AM

imes

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Intermediate

Joined: Aug 2018

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From: Tbilisi, Georgia

Best Harmonic balancer for supercharged LS3 ?

Hello guys.

I got P1SC1 procharged corvette LS3 wet sump, manual trans.
I'm thinking to change HB but I don't know which one to go for.
As I searched for it on the forum ATI 917246 is the good choice.
What about Underdrive or Overdrive balancer ?

Apr 22, 2020 | 06:46 AM

irok

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Joined: May 2011

Posts: 3,807

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From: Oshawa, Ontario

ATI is one of the best out there and have been around for 40+ years.You can't use an under driven balancer on a supercharged application.Easier to use stock size hb and change pulley size on blower if need be.Call ATI tech line at 410 298 4343 for p/n needed

Apr 22, 2020 | 09:00 AM

imes

Thread Starter

Intermediate

Joined: Aug 2018

Posts: 38

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From: Tbilisi, Georgia

Quote:

Originally Posted by irok

I think so. I will buy standard size pulley.
thanks so much

Apr 22, 2020 | 09:03 AM

sstonebreaker

Le Mans Master

Joined: Mar 2006

Posts: 5,775

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From: Texas

The custom balancer that A&A uses is actually 20% OVER driven, to maximize belt contact.

Apr 22, 2020 | 09:37 AM

JetstreamGS

Melting Slicks

Joined: Jul 2014

Posts: 2,138

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Quote:

Originally Posted by sstonebreaker

The custom balancer that A&A uses is actually 20% OVER driven, to maximize belt contact.

10% OD Innovators West is what they use.

Apr 22, 2020 | 08:56 PM

Hitman227

Melting Slicks

Joined: Feb 2007

Posts: 3,297

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From: Raleigh Suburbs

ATI is the best because it actually dampens, unlike cheaper ones that are just a balanced pulley.

Apr 23, 2020 | 12:21 AM

CI GS

Le Mans Master

Joined: Apr 2013

Posts: 5,376

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To me, the best for an all-out supercharged application is the IW with the oversized blower hub. Not taking anything away from ATI, because they are really good dampeners, but IW no BS and is used by many reputable high-end engine builders and is the only one that I know that has that over sized hub feature. They can also be ordered with twin keyways, comes with IW’s own bolt and washer and IW’s optional crank pinning kit is pure innovative genius for non-keyed cranks.

Apr 23, 2020 | 06:43 AM

irok

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Joined: May 2011

Posts: 3,807

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From: Oshawa, Ontario

All the higher end GM crate engines come from the factory with ATI dampeners on them as do the 24 hour endurance race engines run at Daytona,Sebring and LeMan's.I prefer ATI's pinning method 90 degree's to the crank with as many as 4 key ways if desired

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Apr 23, 2020 | 10:09 AM

0JUICED1

Former Vendor

Joined: Feb 2012

Posts: 26,512

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From: ST. CHARLES IL

If you have a Procharger set up use an ATI. If you have an A&A set up use an Innovators West.

Apr 23, 2020 | 04:30 PM

#10

Hitman227

Melting Slicks

Joined: Feb 2007

Posts: 3,297

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From: Raleigh Suburbs

Hmm interesting, haven't seen the Innovators West

Apr 23, 2020 | 09:30 PM

#11

hmmmm16417

Drifting

Joined: Apr 2013

Posts: 1,501

Likes: 185

From: Erie PA

I used a powerbond 10% overdrive .... was about $250. Seems to work well.

Last edited by hmmmm16417; Apr 23, 2020 at 09:31 PM.

Apr 25, 2020 | 02:40 PM

#12

imes

Thread Starter

Intermediate

Joined: Aug 2018

Posts: 38

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From: Tbilisi, Georgia

Quote:

Originally Posted by JUICED1

If you have a Procharger set up use an ATI. If you have an A&A set up use an Innovators West.

I agree
I got Procharger and Im going to buy ATI but thinking about standard size or 10% overdrive

Apr 25, 2020 | 02:53 PM

#13

hmmmm16417

Drifting

Joined: Apr 2013

Posts: 1,501

Likes: 185

From: Erie PA

I have A&A and put a powerbond on........

Apr 26, 2020 | 06:43 PM

#14

VetteofSD

Racer

Joined: May 2014

Posts: 338

Likes: 64

From: San Diego CA

I've had a Powerbond PB1117SS on my A&A LS2 for the last 30,000 miles. Cost ~$250. No issues whatsoever.

Apr 26, 2020 | 09:00 PM

#15

Turbo6TA

Race Director

Joined: Mar 2011

Posts: 13,262

Likes: 3,151

From: SW Florida

2021 C6 of the Year Finalist - Modified

Another Gates Powerbond PB1117SS on my GS with a Heartbeat SC

Rock solid ...

Apr 30, 2020 | 05:43 PM

#16

boonie c4

Burning Brakes

Joined: Dec 2009

Posts: 816

Likes: 40

From: Sacto Calif

I went with the summit HB so far so good

May 1, 2020 | 11:04 AM

#17

NormWild

Drifting

Joined: Apr 2008

Posts: 1,955

Likes: 22

From: Lehigh Valley Pennsylvania

I went with the Power Bond, no need for the ATI for lower HP applications IMO.

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