HYDRAULIC – Thumpr : High performance street, stock converter ok, best with 2000+ converter and gears. Choppy/thumping idle.

Product Features

  • HYDRAULIC – Thumpr : High performance street, stock converter ok, best with 2000+ converter and gears. Choppy/thumping idle.
  • 279/297 Advertised Duration, 227/241 Duration @ .050 inch, .479 inch/.465 inch Lift, 107 Lobe Separation
  • Valve spring upgrade required

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