Speedmaster®
1.300" Od. LS Dual Valve Springs - 134 Lbs @ 1.800" - 1.125" Coil Bind
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Product Information
Specs
| Brand: | Speedmaster |
| Part Number: | PCE272.1012 |
| Part Type: | Valve Spring |
| Number of Springs Per Valve: | Dual |
| Outside Diameter of Outer Spring (in): | 1.300 in. |
| Coil Bind Height (in): | 1.125 in. |
| Damper Spring Included: | No |
| Spring Rate (lbs/in): | 134lbs @ 1.800 in. |
| Inside Diameter of Outer Spring (in): | 0.9130 in. |
| Inside Diameter of Inner Spring (in): | 0.6550 in. |
| Valve Spring Style: | Standard |
| Coated: | No |
| Quantity: | Sold as a set of 16 |
| Notes: | Dual valve spring commonly used in aftermarket aluminum Big Block Chevy and Big Block Ford Heads. |
Warranty Information
12-Month Limited Worldwide Warranty
Prop 65 Warning
This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Installation Guide
Our AI assistant generates a step-by-step guide for this product — covering installation, maintenance, and troubleshooting.
This AI-generated guide is for general reference only and does not constitute official Speedmaster product documentation. Always verify fitment, torque specifications, and safety requirements before installation.


