Speedmaster®
Pontiac 389 400 455 Ram Air 230cc 78cc Full CNC Aluminum Bare Cylinder Head
Overview
Specs
| Brand: | Speedmaster |
| Part Number: | PCE281.1801 |
| Part Type: | Cylinder Heads |
| Cylinder Head Style: | Bare |
| Cylinder Head Material: | Aluminum |
| Cylinder Head Finish: | Natural |
| Combustion Chamber Volume (cc): | 78 cc |
| CNC-Machined Combustion Chamber: | Yes |
| Intake Runner Volume (cc): | 230 cc |
| Exhaust Runner Volume (cc): | 180 cc |
| CNC-Machined Intake Runner: | Yes |
| CNC-Machined Exhaust Runner: | Yes |
| Intake Port Shape: | Ram Air IV |
| Intake Port Location: | Standard |
| Exhaust Port Shape: | Ram Air IV |
| Exhaust Port Location: | Standard |
| Spark Plug Style: | Standard |
| Comp. Valve Job: | No |
| Intake Valves Included: | No |
| Intake Valve Diameter (in): | 2.11 in. |
| Exhaust Valves Included: | No |
| Exhaust Valve Diameter (in): | 1.660 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: | 14 deg. |
| Exhaust Valve Angle: | 14 deg. |
| Valve Guides Included: | Yes |
| Valve Guide Material: | Bronze |
| Valve Seats Machined: | No |
| Valve Seat Machine Style: | N/A |
| Valve Seat Material: | Ductile iron |
| Steam Holes Drilled: | No |
| Oiling Style: | Through pushrod |
| Machined for O-Ring: | No |
| Heat Crossover: | No |
| Quantity: | Sold individually. |
| Calculator | Compression Calculator |
| Note: | Valve guides on these heads must be reamed to 11/32" to accept the recommended valves. Recommended valves PCE273.1074 - Intake and PCE273.1075 - Exhaust. |
Brand Information
In 1979, the company was founded with Pete's Performance, which was a small speed workshop. It began by building engines for customers as a hobby, and it has now grown to include selling, assembling, manufacturing and racing high performance engine parts. Over the years, the company has grown into a worldwide high performance powerhouse. Growing from a one-man bricks-and-mortar business; to now a supply chain in which entails more than 400+ people all across the world. Today, Pete's Performance has evolved into the internationally known Speedmaster: which has distribution centres and offices is Sydney, Los Angeles and Shanghai.
SUB-BRAND
Founded in Sydney Australia with one CNC Machine increasing to sixty 5-Axis CNC machines before being acquired in 2013. The Company's main focus has always been "Speed to Market", launching 1,200+ new products each year. Needing just one month to develop a new product and get it on to the shelf, compared to the six-month industry average. PCE has a policy of zero advertising, preferring to invest a percentage of revenues in new product development. These products being white-labeled to most of the biggest brands in the business.