Speedmaster®
M8 8mm Base to 3/8" Rocker Arm Screw In Stud Kit (1.380" Above Hex) Chevy GM LS
Product Information
Overview
Speedmaster arm stud kits are made of 4140 Chromoly steel. They're roll-threaded, heat-treated to a maximum strength of 190,000+ PSI. and have a black oxide corrosion-resistant finish. They feature larger radius stud fillets for extra strength.
Specs
| Brand: | Speedmaster |
| Part Number: | PCE260.1009 |
| Part Type: | Rocker Arm Stud |
| Base Thread Size: | M8 x 1.25mm |
| Rocker Arm Nut Thread Size: | 3/8-24 in. |
| Guideplate Locator Shank: | No |
| Rocker Arm Nut Thread Length (in): | 0.800 in. |
| Effective Stud Length (in): | 1.380 in. |
| Base Thread Length (in): | 0.780 in. |
| Quantity: | Sold as a set of 16. |
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.