Speedmaster®
Chevy SBC 350 Ford SB 289 302 351W Head Build Kit - Mechanical Flat Tappet
Product Information
Overview
Speedmaster cylinder head valvetrain kits offer a comprehensive solution for revitalizing your engine's cylinder heads. These kits are expertly crafted to restore optimal performance and are tailored to match specific cylinder head configurations and camshaft profiles, ensuring a perfect fit and maximum efficiency. Whether you're overhauling an engine or looking to upgrade your vehicle's performance, these valvetrain kits provide all the necessary components for a complete and reliable rebuild.
Specs
| Brand: | Speedmaster |
| Part Number: | 1-250-002-01 |
| Part Type: | Cylinder Head Valvetrain Kit |
| Intake Valves Included: | Yes |
| Intake Valve Diameter (in): | 2.020 in. |
| Exhaust Valves Included: | Yes |
| Exhaust Valve Diameter (in): | 1.600 in. |
| Valve Material: | Stainless Steel |
| Valve Length (in): | 5.051 in. |
| Valve Stem Diameter (in): | 11/32 in. (0.341 in.) |
| Undercut Valve Stems: | Yes |
| Swirl-Polished Valves: | Yes |
| Valve Springs Included: | Yes |
| Valve Spring Type: | Dual |
| Valve Spring Style: | Standard |
| Valve Spring Outside Diameter (in): | 1.450 in. |
| Valve Spring Seat Pressure: | 130 lbs @ 1.800 in. |
| Valve Spring Coil Bind Height (in): | 1.060 in. |
| Damper Spring Included: | No |
| Retainers Included: | Yes |
| Retainer Material: | Chromoly Steel |
| Retainer Lock Angle: | 10 Degree |
| Valve Locks Included: | Yes |
| Valve Lock Material: | Chromoly Steel |
| Valve Lock Style: | 10 Degree |
| Lock Groove Style: | Single Groove |
| Valve Stem Seals Included: | Yes |
| Valve Stem Seal Type: | Positive Stop |
| Valve Stem Seal Material: | Viton |
| Valve Guide Diameter (in): | 0.530 in. |
| Quantity: | Sold as a kit. |
| Notes: |
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.