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First, here are the Goodyear belt PNs that work for Race dampers: (belts for Street dampers are still TBD) AC.................4040385
PS..................4040365 (somewhat tight installing, but works)
PS alternative..4040372 (when tight, 1/4" away from the end of the adjustment slot)
H2O/Alt..........4040400
Now, the ATI Race and Street damper comparison...
Street damper specs:
- 12% underdriven on AC and H2O/Alt pulleys
- 6% underdriven on PS pulley
- Rated at 600 HP capability (the smaller the diameter, the lesser the control of harmonics at higher RPMs/HP)
- weight TBD (approximately 6 lbs.)
- aluminum outer shell and pulleys
- integral hub with inner shell (not removable)
- 360° timing marks
- SFI 18.1 approved
Race damper specs:
- 8% overdriven on AC and H2O/Alt pulleys
- 6% overdriven on PS pulley
- Rated at 1000 HP capability (the larger the diameter, the better the control of harmonics at higher RPMs/HP)
- weight 7.24 lbs
- aluminum outer/inner shell and pulleys
- removable hub
- 360° timing marks
- SFI 18.1 approved
Left: Race damper, Right: Street damper (front view)
Left: Race damper, Right: Street damper (side view)
Left: Race damper, Right: Street damper (back view)
Stock, ATI Race, ATI Street (front view)
Stock, ATI Race, ATI Street (back view)
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ATI damper update, belt PNs and Street compared to Race - 
