Speedmaster®
Mopar Chrysler BB 383 440 Head Build Kit - Hydraulic 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: | 1-250-036-01 |
| Part Type: | Cylinder Head Valvetrain Kit |
| Intake Valves Included: | Yes |
| Intake Valve Diameter (in): | 2.250 in. |
| Exhaust Valves Included: | Yes |
| Exhaust Valve Diameter (in): | 1.810 in. |
| Valve Material: | Stainless Steel |
| Valve Length (in): | 5.494 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: | Single with Damper |
| Valve Spring Style: | Standard |
| Valve Spring Outside Diameter (in): | 1.550 in. |
| Valve Spring Seat Pressure: | 135 lbs @ 1.900 in. |
| Valve Spring Coil Bind Height (in): | 1.125 in. |
| Damper Spring Included: | Yes |
| 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.