Which ATI damper to get for my application?

[Dragster]

I will be upgrading to the GT350 manifold soon, and I want to make sure my car is rock solid to 8,000 rpm or so. I will be doing oil pump gears, crankshaft sprocket, and an ATI damper. My problem is that I don't know which one to go with. According to ATI's website, there are 8 different models for NA coyotes. There are 4 versions of the 918047 model, which I have seen at least one member on here running. There are a couple models for no AC, which is definitely out, so it basically comes down to whether I want steel or aluminum. Thoughts on what to go with? I would assume the aluminum would be lighter, but I really have no idea how to decide which to get... Also, ATI offers several models with OD from 10-20%--what does that do?

Thanks in advance for the help!

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[Mikeg4572]

I believe the OD is for supercharger applications. The overdrive will spin the blower faster acting like a smaller pulley.

 

[wildcatgoal]

Call them. They will tell you exactly which one you need.

 

[Derek@Lethal]

The 918047 is basically OEM replacement. It's stock diameter and retains the AC, it's the one we sell the most of by far. The 918047A is the same except it has the aluminum hub, this is NOT recommended for supercharged applications. You can go with the 918047A now since you are NA and purchase the steel hub at a later date if you decide to go with a blower.

The overdrive versions, like mentioned, are for blown applications needing to spin the blower faster to increase the boost. We offer the complete ATI line so give us a shout if you'd like to place an order or if you have any other questions.

http://www.lethalperformance.com/ford-mustang-v8-gt/2015-2017-ford-mustang-gt/engine-1/balancers-2

Thanks

 

[Dragster]

Thanks for the replies everyone, I appreciate it!

The 918047 is basically OEM replacement. It's stock diameter and retains the AC, it's the one we sell the most of by far. The 918047A is the same except it has the aluminum hub, this is NOT recommended for supercharged applications. You can go with the 918047A now since you are NA and purchase the steel hub at a later date if you decide to go with a blower.

The overdrive versions, like mentioned, are for blown applications needing to spin the blower faster to increase the boost. We offer the complete ATI line so give us a shout if you'd like to place an order or if you have any other questions.

http://www.lethalperformance.com/ford-mustang-v8-gt/2015-2017-ford-mustang-gt/engine-1/balancers-2

Thanks

Derek, is there any advantages or disadvantages for the one with the aluminum hub for an NA application? I would assume that the aluminum is lighter, but I believe ATI's website says they weigh the same. Is the aluminum weaker than the steel? I just don't want to take any chances when revving to 8K. Thanks again for the help!

 

[Derek@Lethal]

I don't think the weights are super accurate on ATI's site as the 918047 is not 5.5 lbs, it's closer to 13 lbs which is only marginally heavier than stock. The aluminum is lighter so in theory it will allow the engine to rev quicker. In a NA application, the aluminum hub is more than sufficient and is super strong. It's just when you add the extra inertia of a supercharger spinning where you can stress the hub, that's why steel is recommended for blown applications.

 

[DAVECS1]

Good stuff!, guess i know were i will be buying my balancer and blower :-)

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