Speedmaster® PCE281.2027 - Aluminum Complete Cylinder Heads

Aluminum Complete Cylinder Heads by Speedmaster®. 2 Pieces. Combustion Chamber Volume 70 cc. Intake Runner Volume: 217 cc. Competition Valve Job: No. Spark Plug Style: Straight. Cylinder Head Material: Aluminum. Speedmaster CNC ported cylinder heads are machined on dedicated 4-axis and 5-axis CNC machining centers to ensure accuracy and cost effectiveness. Combustion Chamber, Exhaust and Intake Ports all fully CNC machined for better flow. CNC combustion chambers offer superior control over flame travel and quench area. CNC Ported heads eliminate human error and variation from port to port. Unsurpassed repeatability from one cylinder head to another that is commonly found in "Hand porting & Polishing". Combustion chambers are exact in volume - so every cylinder has the same compression ratio. Each port is the same cross section - so every cylinder can reach higher true RPM potential. CNC machining produces ports and chambers to within tolerances of no more than 0.002"; in turn every cylinder can reach the same power potential and accurate tuning.

Features

• All Speedmaster 23deg. Small Block Chevy heads are available with Straight or Angled sparkplugs
• Standard valve sizes are 2.020" Intake, and 1.6" Exhaust, both + 0.1" length
• While the 2.02" valves are standard issue, all of Speedmaster 23deg. aluminum heads can accept a 2.05" intake valve with minimal additional work
• Some of Speedmaster CNC ported heads (PCE281.1354-1448) are designed around 2.05" Intake valves
• Speedmaster cast iron heads use 1.94" intake valves, and 1.5" exhaust valves
• For those racers looking for a head with 800+hp potential, step up to Speedmaster new 15deg heads
• These heads have room for huge 2.180"-2.2" intake valves
• They even have the matching rockers
• Created by professionals to meet your requirements
• Superior longevity and dependability
• Expertly Crafted using premium-grade materials

Founded in 1979, Speedmaster® has become a leader in its field, built on a long term consistency of being a specialist in aftermarket automotive components. It began as a small speed workshop building engines for customers as a hobby, and now the company has grown from a one-man bricks-and-mortar business into a worldwide high-performance powerhouse known for assembling, manufacturing and racing high-performance engine parts. Speedmaster’s mission is to push innovation boundaries to create visually distinctive DNA, by blending old and new technology into functionality and aesthetics. Its empowered work forced drives innovation not only in the products it makes but with the way it goes about doing it. The ultimate token of precision, Speedmaster is the world’s only major parts manufacturer to equip cars from Standard replacement to Top Fuel Dragsters. Surviving the longevity of road, race and recreation is mandatory for all Speedmaster “Track Proven” products, bringing you closer to product perfection.