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Vehicle Info NeededPowerforce Harmonic Damper Small Block Chevy 383/400
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- Powerforce Harmonic Damper
- Small Block Chevy 383/400
- 6.75'' Diameter
- External Balance
- Nodular Iron
Note: Although this model damper features a bolt-in counterweight, the damper cannot be used without the weight. Due to the windows cut in the front face of the damper if the counterweight is removed it is still not a neutral balance damper. If you need a neutral balance 6-3/4" damper use #428-80000 or #428-90000.Chevy Small Block engines have used three different timing pointerlocations. Pre '69 engines have the TDC mark 2° to the left of the keywaycenterline. The '69 to '85 dampers have the TDC mark 10° to the left of thekeyway centerline. The 1986 to 1991/1992 have the TDC mark 40° to the leftof the keyway centerline. All of our SB Chevy dampers, as well as all otheraftermarket dampers, use the 10° TDC position. Our 6.75" diameter modelshave two TDC marks, one that is 10° and one that is 40° to the left of thekeyway. If you have a pre '69 vehicle you can use one of the aftermarket bolt-ontiming pointers to align correctly with the timing marks on our dampers.
Professional Products Powerforce Dampers are designed to fit a wide range of engine applications. Powerforce Dampers come internally or externally balanced from the manufacturer but allow additional bolt-on counterweights. With this feature, these Dampers provide high flexibility in switching to different applications and that require more or less balance. This allows one Damper to be used on multiple engines. Professional Products gives a major competitive advantage with versatility combined with quality not found with any other company.
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Powerforce Street Dampers are offered in nodular iron, stainless steel, and lightweight 1045 steel to withstand the demands of today's street performance enthusiasts.
Powerforce+Plus Dampers are constructed of 1045 steel for increased durability and consistency at higher RPM's. They're SFI approved for all-out racing applications.
Features:
- Accurate crank bore for proper press fit onto stock crankshaft.
- Bright white, easy to read timing marks.
- Tough, high temperature elastomer to resist breakdown.
- Powerforce Street Dampers limited to 6,500 RPM.
- Powerforce+Plus Dampers limited to 9,500 RPM.
JEGS Easy Kits are designed by JEGS high performance racing professionals to help you get all the performance parts you need for your race car, hot rod or truck.
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