This spring will last 2 to 3 times longer and give you 10 additional pounds of seat & 25 more pounds open pressure. They look and install exactly like the springs for the GM Crate engines. The valve spring creation process is far more involved than most people realize. Selecting the right metal stock and creating the best design is not done by chance. CTS have developed a process that creates the highest quality valve spring available. The result is a product that meets and exceeds the expectations of todays engine builders and racers.
Crate Engine 602 603-604
Free Height: 2.021 2.154
Installed Height: 1.70 1.78
Lbs @ Installed Height (+/- 4 lbs) 91, 111 lbs
Open Pressure (+/- 8 lbs) 215 lbs, 280 lbs
Features OEM matched Green Stripe
No Machining required on outside OD of spring seat. Fits out of the box. Just Shim to height-(Sold Separately).