Valve Spring
| Valve Springs - Standard Engine | Free Length (Approx.) | 1.84 inch |
| Nominal Force (Valve Closed) | 70 lbs. @ 1.57 inch | |
| Nominal Force (Valve Open) | 160 lbs. @ 1.28 inch | |
| Installed Heigh | 1.580 inch | |
| Valve Springs - High Output R/T Engine | Free Length (Approx.) | 2.13 inch |
| Nominal Force (Valve Closed) | 72 lbs. @ 1.57 inch | |
| Nominal Force (Valve Open) | 167 lbs. @ 1.28 inch | |
| Installed Height | 1.580 inch |