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.