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Harmonic Balancer question?

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Old Mar 9, 2020 | 09:55 AM
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Default Harmonic Balancer question?

Is there a aftermarket one that’s the stock size? There’s nothing wrong with the one I have but I figured since I’m there. Thanks

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Old Mar 9, 2020 | 12:49 PM
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This is what A&A recommends and used by tons of people, direct stock replacement, SFI rated.

Aaand I forgot to post the link, I'm an idiot:

https://www.summitracing.com/parts/sum-c2501

Last edited by aaronc7; Mar 9, 2020 at 02:41 PM.
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Old Mar 9, 2020 | 01:21 PM
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Do you want an aftermarket oem replica or do you want an aftermarket better than oem stock sized? If you want better than stock you can get the innovators west 840 https://innovatorswest.com/840-LSX-Damper.html
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Old Mar 9, 2020 | 02:59 PM
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Originally Posted by aaronc7
This is what A&A recommends and used by tons of people, direct stock replacement, SFI rated.

Aaand I forgot to post the link, I'm an idiot:

https://www.summitracing.com/parts/sum-c2501
This is the one I'm running
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Old Mar 9, 2020 | 03:53 PM
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the one from summit looks gd! Just looking to stay oem size. Mine seems to ok but for a oem replacement the one from summit looks gd
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Old Mar 9, 2020 | 03:59 PM
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innovators west is nice and what I use as well but if you are going to spend the money on one you might as well just get an oversized and pick up some boost... if you ever plan to go to 8 or 10 rib or an a&a secondary drive that is something else to consider

Last edited by StingrayRebel; Mar 9, 2020 at 03:59 PM.
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Old Mar 9, 2020 | 05:01 PM
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Originally Posted by neutron82
innovators west is nice and what I use as well but if you are going to spend the money on one you might as well just get an oversized and pick up some boost... if you ever plan to go to 8 or 10 rib or an a&a secondary drive that is something else to consider
well I’m on the stock bottom end so I’m not looking to increase boost right now..
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Old Mar 9, 2020 | 05:46 PM
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Could get a stock size in 8 rib if you decide later to upgrade belts system.
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Old Mar 9, 2020 | 08:17 PM
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Originally Posted by SmoothFRC
Could get a stock size in 8 rib if you decide later to upgrade belts system.
this
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Old Mar 9, 2020 | 08:20 PM
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or get an overdrive and go up a size on the blower pulley to keep boost the same as it is now and then go back to your original pulley when you're ready
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Old Mar 9, 2020 | 09:31 PM
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Originally Posted by neutron82
or get an overdrive and go up a size on the blower pulley to keep boost the same as it is now and then go back to your original pulley when you're ready
even better. 8 rib 10% over and larger pulley ftw.
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Old Mar 9, 2020 | 10:24 PM
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Might as well get a ysi blower while you're there too!


Last edited by aaronc7; Mar 9, 2020 at 10:24 PM.
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Old Mar 9, 2020 | 11:22 PM
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Originally Posted by aaronc7
Might as well get a ysi blower while you're there too!
And port the heads too!

this is exactly how my build went lol
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Old Mar 12, 2020 | 06:44 AM
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Going with the one from summit, that should work fine. Thanks!
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Old Mar 12, 2020 | 09:41 AM
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My understanding is you cannot use the summit one as an 8 rib as it’s more of a universal setup to manage different spacings for other ls applications. Meaning your 6 rib belt will run on the outer 6 ribs and a truck would run on the inner (if that makes sense)... so you cannot use it as an 8 rib as the c5 needs the ribs added to the front of the balancer not the back.

just FYI!

Last edited by SmoothFRC; Mar 12, 2020 at 09:42 AM.
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Old Mar 12, 2020 | 10:00 AM
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Originally Posted by SmoothFRC
My understanding is you cannot use the summit one as an 8 rib as it’s more of a universal setup to manage different spacings for other ls applications. Meaning your 6 rib belt will run on the outer 6 ribs and a truck would run on the inner (if that makes sense)... so you cannot use it as an 8 rib as the c5 needs the ribs added to the front of the balancer not the back.

just FYI!
yes, makes sense..I wonder why a&a recommends it?
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Old Mar 12, 2020 | 04:37 PM
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Originally Posted by 04zjimc
yes, makes sense..I wonder why a&a recommends it?
As a direct replacement for a stock/6 rib setup - it's a decent unit from what is on these forums.

If you wanted to do the A&A direct drive setup, there is yet another balancer you'd need to get That is an Innovators West with a proprietary setup to feed the direct drive.

It's like anything else - do you intend to leave the car alone or continue to tinker with it? If tinker, may be worth going with the IW setup.
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Old Mar 12, 2020 | 07:48 PM
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Originally Posted by SmoothFRC
My understanding is you cannot use the summit one as an 8 rib as it’s more of a universal setup to manage different spacings for other ls applications. Meaning your 6 rib belt will run on the outer 6 ribs and a truck would run on the inner (if that makes sense)... so you cannot use it as an 8 rib as the c5 needs the ribs added to the front of the balancer not the back.

just FYI!
That's correct It's an 8 rib, but the extra 2 are in the rear and don't/can't get used. A&A has probably recommended as a cost effective SFI rated replacement. $200 as opposed to 300-400+
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Old Mar 13, 2020 | 04:42 PM
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Originally Posted by 04zjimc
well I’m on the stock bottom end so I’m not looking to increase boost right now..
You can't drag race NHRA without a SFI
balancer when blown.
Good luck
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