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Heavy Duty Drive Damper for  GM 5.7, 7.4 (big block) Recommended for applications from 300-400 HP 14" Flywheel (does not fit the older 12 3/4' flywheels) Has 26 tooth spline for common 1:1 Borg-Warner and ZF transmissions. This is the 8 spring (not 6 spring) damper with HD Purple Springs.

Not for Fords or older GM with 12 3/4" Flywheels   (Special cutting to reduce diameter for Modified Fords available on request when time allows)

SYMPTOMS: Strange rattling, metallic sounds coming from the back of your engine, worse at idle, This is the typical symptom of a drive damper going bad. It is also recommended to replace the drive damper whenever a transmission is replaced. Catastrophic failure follows if left "rattling".

Actual diameter of this damper is 13 3/16"

ALWAYS use  Loktite on bolt threads when re-installing.

WILL NOT work with PCM 40 transmissions with 15 tooth spline input shaft.

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Total price$467.80

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