
Howards Cams 98643 Pro-Alloy Mechanical Roller Valve Springs 1.550
Howards Cams designed these 98643 Pro-Alloy Valve Springs from a specially developed low-stress, high-endurance material. Many years of development, experience, as well as testing have gone into creating these valve springs.
They feature a low fatigue rate compared to most roller springs on the market, and are cycle-tested to 12 million cycles with no breakage. These springs are CNC coiled as well as heat-treated in the finest facilities available. Each spring is parallel ground, stress relieved, deburred in addition to shot-peened for years of high-performance service.
Choosing the correct valve spring allows your engine to reach its full potential. Valve springs should match the camshaft in addition to reaching the recommended spring pressure.
Howards Cams 98643 Pro-Alloy Valve Springs Specs:
- Number of Springs Per Valve: Dual
- Valve Spring Style: Standard
- Maximum Valve Lift: 0.750 in.
- Coil Bind Height: 1.080 in.
- Outside Diameter of Outer Spring: 1.550 in.
- Inner Diameter of Outer Spring: 1.126 in.
- Outside Diameter of Inner Spring: 1.126 in.
- Inner Diameter of Inner Spring: 0.815 in.
- Spring Rate: 508 lbs./in.
- Closed Pressure: 230 lbs. @ 1.880
- Open Pressure: 550 lbs. @ 1.250
- Damper Spring Included: No
- Retainers Included: No
- Valve Springs Coated: No
- Valve Stem Seals Included: No
- Locks Included: No
- Quantity: Sold as a set of 16
Howards Cams produces high-performance cams and valve train components designed to boost the performance of a number of different V6 as well as V8 engines. They also manufacture several other engine parts such as connecting rods, crankshafts, and more, all built with the same passion and precision that has made Howards an industry leader for over 70 years.
Howards Cams Valve Springs – The Ultimate In Performance!
Howards Cams 98643 Pro-Alloy Mechanical Roller Valve Springs 1.550
Howards Cams designed these 98643 Pro-Alloy Valve Springs from a specially developed low-stress, high-endurance material. Many years of development, experience, as well as testing have gone into creating these valve springs.
They feature a low fatigue rate compared to most roller springs on the market, and are cycle-tested to 12 million cycles with no breakage. These springs are CNC coiled as well as heat-treated in the finest facilities available. Each spring is parallel ground, stress relieved, deburred in addition to shot-peened for years of high-performance service.
Choosing the correct valve spring allows your engine to reach its full potential. Valve springs should match the camshaft in addition to reaching the recommended spring pressure.
Howards Cams 98643 Pro-Alloy Valve Springs Specs:
- Number of Springs Per Valve: Dual
- Valve Spring Style: Standard
- Maximum Valve Lift: 0.750 in.
- Coil Bind Height: 1.080 in.
- Outside Diameter of Outer Spring: 1.550 in.
- Inner Diameter of Outer Spring: 1.126 in.
- Outside Diameter of Inner Spring: 1.126 in.
- Inner Diameter of Inner Spring: 0.815 in.
- Spring Rate: 508 lbs./in.
- Closed Pressure: 230 lbs. @ 1.880
- Open Pressure: 550 lbs. @ 1.250
- Damper Spring Included: No
- Retainers Included: No
- Valve Springs Coated: No
- Valve Stem Seals Included: No
- Locks Included: No
- Quantity: Sold as a set of 16
Howards Cams produces high-performance cams and valve train components designed to boost the performance of a number of different V6 as well as V8 engines. They also manufacture several other engine parts such as connecting rods, crankshafts, and more, all built with the same passion and precision that has made Howards an industry leader for over 70 years.
Howards Cams Valve Springs – The Ultimate In Performance!
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Description
Howards Cams designed these 98643 Pro-Alloy Valve Springs from a specially developed low-stress, high-endurance material. Many years of development, experience, as well as testing have gone into creating these valve springs.
They feature a low fatigue rate compared to most roller springs on the market, and are cycle-tested to 12 million cycles with no breakage. These springs are CNC coiled as well as heat-treated in the finest facilities available. Each spring is parallel ground, stress relieved, deburred in addition to shot-peened for years of high-performance service.
Choosing the correct valve spring allows your engine to reach its full potential. Valve springs should match the camshaft in addition to reaching the recommended spring pressure.
Howards Cams 98643 Pro-Alloy Valve Springs Specs:
- Number of Springs Per Valve: Dual
- Valve Spring Style: Standard
- Maximum Valve Lift: 0.750 in.
- Coil Bind Height: 1.080 in.
- Outside Diameter of Outer Spring: 1.550 in.
- Inner Diameter of Outer Spring: 1.126 in.
- Outside Diameter of Inner Spring: 1.126 in.
- Inner Diameter of Inner Spring: 0.815 in.
- Spring Rate: 508 lbs./in.
- Closed Pressure: 230 lbs. @ 1.880
- Open Pressure: 550 lbs. @ 1.250
- Damper Spring Included: No
- Retainers Included: No
- Valve Springs Coated: No
- Valve Stem Seals Included: No
- Locks Included: No
- Quantity: Sold as a set of 16
Howards Cams produces high-performance cams and valve train components designed to boost the performance of a number of different V6 as well as V8 engines. They also manufacture several other engine parts such as connecting rods, crankshafts, and more, all built with the same passion and precision that has made Howards an industry leader for over 70 years.
Howards Cams Valve Springs – The Ultimate In Performance!











