2004-2007 Cadillac CTS-V Performance Mods Discussion, Aftermarket Harmonic Dampner for V1 in Cadillac CTS-V Series Forum - 2004 - 2007; Gentlemen,
My dampner has started wobbling, time to replace. I don't want to replace with the stock unit, which is ...
My dampner has started wobbling, time to replace. I don't want to replace with the stock unit, which is doomed to failure on almost all LS motors (V1, C5, GTO, TBSS, etc.). However, the most frequently recommended aftermarket replacement, which is the ATI Super Dampner, costs $450. Mother of God.
Thanks, buddy, you come through again. Would you go with the ATI Super Dampner?
You may want to verify the ATI part number. I say that because I tried to check it against Rock Auto's listings. Specifically, the Summit listing shows that it will fit the Corvettee (1997-2004), but does not list a CTS-V. Rock Auto shows a harmonic balancer for the LS6 CTS-V, which it shows also will also fit the 1997-2004 Corvette. However, Rock Auto shows no harmonic balancer listing for the 2006-2007 LS2 CTS-V. Bottom line is that I was unable to verify that the Summit ATI unit will fit the CTS-V LS2. Perhaps some other folks have already verified this.
Decided to go with the ATI, no underdrive. I want this part to work and I don't want to think about it again for the next ten years or so.
I think you made the right decision. If you ever decide to go with a supercharger, you'll want to pin the crank while you're down there. Btw, what color is your CTS-V interior? There's a set of black seats on eBay for pickup only--going for $155 right now.
I have to give a shout-out to Summit. Not sure if they are sponsors or not and if this is against the rules-- if so, sorry. But I just have to say that they worked super hard to get this part to me, and it just arrived today. Initially, they tried to do a drop pick up, so I could pick up the part from ATI, which is based in my town, Baltimore. That way I could get summit pricing and not pay any shipping. Then when it looked like ATI wouldn't fab it in time for a weekend install, which became clear at 2.50pm on Saturday, they overnighted the part to me from their stock for what I thought was a very low overnight fee. Not only that, but they called me several times to confirm that everything was going smoothly. All in all, my "bright idea" to do a drop pick up from ATI probably cost them a couple hours in man time, and they were apologizing to me the whole time. Amazing.
The ATI damper is is sitting here in front of me now. Artie from Summit, you are the man.
Well, my tuner Jeff Lowry at PSI in Maryland, whom I trust, is of the opinion that it's overkill unless you're running high RPM, high HP (like 700 at the crank), turbo, etc. He likes em and runs em on his cars, but only the high HP ones. For smallblock N/A cars, he goes with an underdrive pulley.
That said, I like knowing that I will never have to worry about my pulley again.