Valve Spring

Sure Seat Valve Spring

Sure Seat Valve Spring; High-Perf. Street; Non-Rotator; Seat Press. 132 lbs.; Installed H 1.90 in.; Open Pres. 312 lbs. at 0.500 in.; OD 1.55 in.; ID 1.12 in.; Coil Bind 1.160in.;

• Camshaft Type: Mechanical
• Coil Bind Height: OEM
• Inside Diameter: 1.12
• Installed Height (in.): 1.885
• Installed Pressure: 120 lbs.
• Open Height: 1.885 in.
• Outside Diameter: 1.550 in.
• Position: Exhaust or Intake
• Spring Rate (lbs./in.): N/A
• Spring Type: Single
• Tubing Length: 320
• WARNING CA Proposition 65: Yes
• WARNING CA Proposition 65 Message: WARNING: This product can expose you to Chrome; which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information; visit www.P65warnings.ca.gov.

• For Use With Cast-Iron Heads
• Springs Made of Highest Quality Spring Wire
• Springs Precision Wound To Close Tolerances
• Use with Original Equipment Heads Only

Made of highest quality spring wire and precision wound to close tolerances, our Sure Seat Valve Spring sets are for use on original equipment heads when installing Edelbrock Performer-Plus, Performer RPM and Torker-Plus camshafts. These are the same high-performance springs used on Edelbrock Performer and RPM cylinder heads. The #5900 Series valve springs are designed for use with OEM valve rotators. Valve Spring Kits are complete kits that contain non-rotator valve springs, valve spring retainers and matching valve stem locks. For camshaft warranty compliance, use only the springs recommended by Edelbrock for each camshaft application.

When you design and sell the best-engineered performance products in the world, you have to have a rigorous testing program. Why? Without adequate testing, there's no way to stand behind your product with confidence. That's why every product we design and sell at Edelbrock is tested and approved by Edelbrock engineers in a real world environment on state-of-the-art equipment. Our three Super Flow computerized engine dynos are capable of measuring 11 separate engine variables up to speeds of 12,000 rpm. For 2007, we added a new Super Flow SF902 engine dyno. It's fully automated and programmable to simulate various driving situations, and is equipped with WinDyn software for the very latest in testing equipment. For real-world tuning, there's our Super Flow model SF-840 eddy-current chassis dyno that can handle up to 1,000 hp at the wheels and speeds of 200 mph. When all testing is completed, the results evaluated, and the part has passed all performance criteria, then, and only then, is the product deemed ready for production. These precise testing procedures are applied to the entire Edelbrock line for performance that's guaranteed. Edelbrock test vehicles are driven by Edelbrock engineers and employees to get a "real world" feeling for the performance improvements. Our products are also tested and used by professional race car teams and drivers. Working with these talented individuals is just another extension of our research and development process so when we say "proven performance" we really mean it! Top racing teams in all forms of motorsports rely on Edelbrock to produce parts that they can count on to win races and championships. Further underscoring our commitment to the racing community, Edelbrock is the only aftermarket intake manifold manufacturer licensed by NASCAR.