Speedmaster®
Hemi 426 572 Stage VI Top Fuel Head Billet Aluminum Bare Cylinder Head
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Product Information
Specs
| Brand: | Speedmaster |
| Part Number: | PCE281.1101 |
| Part Type: | Cylinder Head [Bare] |
| Product Line: | Race Solid/Mechanical Roller Tappet |
| Cylinder Head Style: | Bare |
| Cylinder Head Material: | Billet Aluminum |
| Cylinder Head Finish: | Natural |
| Combustion Chamber Volume (cc): | 200cc |
| CNC-Machined Combustion Chamber: | Yes |
| Intake Runner Volume (cc): | 333cc |
| Exhaust Runner Volume (cc): | 149cc |
| CNC-Machined Intake Runner: | Yes |
| CNC-Machined Exhaust Runner: | Yes |
| Intake Port Shape: | Square |
| Intake Port Location: | Standard |
| Exhaust Port Shape: | Square |
| Exhaust Port Location: | Standard |
| Spark Plug Style: | Standard |
| Comp. Valve Job: | Yes |
| Intake Valves Included: | No |
| Intake Valve Diameter (in): | 2.450 in. |
| Exhaust Valves Included: | No |
| Exhaust Valve Diameter (in): | 1.925 in. |
| Valve Springs Included: | No |
| Damper Spring Included: | No |
| Retainers Included: | No |
| Locks Included: | No |
| Valve Stem Seals Included: | No |
| Rocker Arm Studs Included: | No |
| Rocker Arms Included: | No |
| Rocker Arm Nuts Included: | No |
| Guideplates Included: | No |
| Valve Cover Mounting Style: | Perimeter Bolt |
| Accessory Bolt Holes Drilled: | Yes |
| Intake Valve Angle: | Standard |
| Exhaust Valve Angle: | Standard |
| Valve Guides Included: | Yes |
| Valve Guide Material: | Steel |
| Valve Seats Machined: | Yes |
| Valve Seat Machine Style: | 3-angle |
| Valve Seat Material: | Ductile iron |
| Steam Holes Drilled: | No |
| Oiling Style: | Through pushrod |
| Machined for O-Ring: | No |
| Heat Crossover: | No |
| Quantity: | Sold individually. |
Description
These billet aluminum cylinder heads are direct bolt on replacements for high performance Chrysler 426 and 572 HEMI engines. They feature fully CNC machined combustion chambers and blended seats for increased air flow and well as revised exhaust valve angles for larger intake valves.
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.