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11 Here’s a comparison of the stock Chevy damper (left) like you will find on many Street Stock engines as well as Chevy’s 602 and 604 crate engines. The Chevy damper is 8 inches in diameter and weighs in at 14 pounds. The Fluidampr CT Gold unit on the right, however, weighs just 8.6 pounds. But that’s not all. The advantage of the reduced weight is multiplied because the reduced 8.6-inch diameter of the Fluidampr means that the weight that remains is closer to the crankshaft centerline and easier to spin up.