CNC Fab 7.3L Powerstroke Stage 1 Valve Spring Kit - 1994-2003 Ford F-Series

CNC Fabrication Stage 1 Valve Spring Kit – 1994.5–2003 7.3L Powerstroke

Upgrade your valvetrain with the CNC Fabrication Stage 1 Valve Spring Kit, a proven mild performance improvement over stock valve springs. This kit is ideal for engines making 500 horsepower or less, offering increased control and reliability without the need for aggressive valvetrain modifications.

🔥 Key Features:

• Stage 1 Performance Upgrade – Perfect for stock to moderately built 7.3L Powerstroke engines

• Improved Valve Control – Reduces valve float and improves stability over factory springs

• Drop-In Friendly – Designed for straightforward installation at recommended heights

• Complete Set – Includes 16 valve springs (full engine set)

📏 Spring Specifications:

• Outer Diameter (OD): 1.354"

• Inner Diameter (ID): 0.940"

• Seat Load: 119 lbs @ 1.800"

• Open Load: 312 lbs @ 1.350"

• Spring Rate: 458 lbs/in

• Coil Bind: 1.280"

• Max Recommended Valve Lift: ~0.510" at installed height

✅ Fitment:

• 1994.5–2003 Ford 7.3L Powerstroke

This Stage 1 kit is an excellent choice for daily drivers, tow rigs, and mild performance builds looking for improved durability and valvetrain stability without stepping into high-RPM race components.