Howards Cams 98652 Electro Polished Performance Hydraulic Roller Valve Springs 1.539

Howards Cams designed these 98652 Electro Polished Performance Valve Springs for racing hydraulic and mechanical flat tappet as well as performance hydraulic roller camshafts. These springs are manufactured from aircraft-grade chrome silicone with advance heat treating. This enhanced finish increases valve spring life and fatigue resistance, for lap after lap consistency.

Choosing the correct valve spring allows your engine to reach its full potential. Valve springs should be matched to the camshaft and the reach the recommended spring pressure.

Howards Cams 98652 Electro Polished Performance Valve Springs Specs:

• Number of Springs Per Valve: Dual
  
• Valve Spring Style: Standard
• Maximum Valve Lift: 0.730 in.
• Coil Bind Height: 1.150 in.
• Outside Diameter of Outer Spring: 1.539 in.
• Inner Diameter of Outer Spring: 1.125 in.
• Inner Spring OD: 1.000 in.
  
• Inner Spring ID: 0.760 in.
  
• Spring Rate: 413 lbs./in.
• Closed Pressure: 140 lbs. @ 1.940
• Open Pressure: 425 lbs. @ 1.250
• Damper Spring Included: Yes
• Retainers Included: No
• Valve Springs Coated: No
• Valve Stem Seals Included: No
• Locks Included: No
• Quantity: Sold as a set of 16

Howards Cams Valve Springs – The Ultimate In Performance!