Feature

●Universal spring is suitable for most engines, valve seat pressure performance is better than OEM12499224, it is an excellent replacement spring for high lift LS camshaft replacement.
●Key Features: Open Load: 348lbs @ 1.200in.; Coil Max Staple: 1.100in.; Lift Max: 0.625. Spring Rate: 340 lbs/in.
●High-quality steel: High-quality steel makes the spring more fatigue-resistant. The oval wire diameter makes the spring more stable. These processes allow the springs to withstand the brutal working pressures of racing for long periods of time without breaking.
●We randomly select some from each batch and perform 23 million fatigue and elastic decay tests. All springs perform well
●12 Month Warranty: Spring kits are guaranteed to last for over one year. If there is any quality problem within one year, please feel free to contact us for replacement.


Description

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PAC-1218 PAC-1219 4929 Spring Micrometer
Lift Rated .600 .625

23 Million Stress Cycles Tested, Elasticity is Still Strong.

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  • Beehive valve springs are more stable than other springs and will not shake.
  • Can handle stress better.

  • The elliptical wire thickness can maximize the wire diameter of the spring and solve the heat dissipation more effectively. Reduce the loss of the spring and extend the life of the spring.
  • Place the largest area of the wire at the point of highest stress.
  • When the spring wire is maximized, reduce the coil of the spring to 6.7 ± 0.2 to strengthen the spring force.
  • Parameters of the springs are very suitable for the LS engine, and the performance is equal to or better than that of the OEM.

  • Installed Load: 135lbs@ 1.800in.
  • OD large end 1.307”
  • ID large end 0.885”
  • ID small end 0.65”
  • Install Height 1.8”
  • Spring open height 1.175”
  • Spring Open Load 348”

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The high-quality steel produced in China, the high-quality steel makes the spring have strong elasticity, and can be used for a long time without losing elasticity.

23 million stress cycles test, the spring force is still strong.

PAC1219 parameters have reliable performance and are strongly recommended for installation.

The special surface treatment process is stained with anti-rust oil to prevent the spring from rusting and prolong the service life.

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Product information