IW and ATI dampers

[Cman01]

Is one better than the other for our engines? What are the pros and con of using one vs. the other?

In my case thinking only about 10% OD.

I know some guys like to do the upper pulley only (I'm guessing cause it's cheaper to do vs. the lower one) and some do both.

 

[manny231988]

When I bought my ATI from Revan Racing I was gonna buy the IW but he steered me to the ATI he said better construction even though the IW looked better IMO.

 

[Catmonkey]

As far as the 10% OD go, the ATI is a true 10%, the IW is more like 12% . I'm running the ATI.

 

[Cman01]

^^^^Really??? So you get 2% more overdrive with the IW? Probably why the IW costs more than the ATI one.

 

[biminiLX]

Can't go wrong wrong either way.
FRPP has used both on CJs.
Are you a track pack car limited to 10%?
-J

 

[VNMOUS1]

Is one better than the other for our engines? What are the pros and con of using one vs. the other?

In my case thinking only about 10% OD.

I know some guys like to do the upper pulley only (I'm guessing cause it's cheaper to do vs. the lower one) and some do both.

I've used both. ATI has a better hub now that they've started using hardened metals.

Romac is another great option.

bj

 

[Cman01]

Yes I have TP, don't want to get into modding oil cooler fitting for 15% damper. I believe even the 10% one needs a tab on the block grinded down or something like that.

 

[biminiLX]

Yes I have TP, don't want to get into modding oil cooler fitting for 15% damper. I believe even the 10% one needs a tab on the block grinded down or something like that.

Correct and I agree. The grinding wasn't too bad
-J

 

[avgt500]

I was in the same boat & went with a Romac, about the same in price but just hard to get, but it is a piece of art.

 

[biminiLX]

Had a Romac SFI aluminum bub on my first 427W, nice piece, didn't know they were in GT500 game.
-J

 

[Cman01]

Looks like most are swinging towards the ATI. I would have no issue with their balancer on the Shelby. I use a 10% underdrive one on my HCI Z06 no problems at all.

 

[Cman01]

Romac balancers for GT500:

Part #A0348SA -10 Gold Series V8 5.4 & 5.8L SA 10% Overdriven Supercharged Mustang and Shelby GT500, 6 & 10 Groove Serp Belt Vin Z

Part # A0348SA - 15 Gold Series V8 5.4 & 5.8L SA 15% Overdriven Supercharged Mustang and Shelby GT500, 6 & 10 Groove Serp Belt Vin Z

Would love to see a pic of the actual part for GT500, hard to find pics of it online.