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Assembly
Ignition System Combo Kits
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Speedmaster El Rayo ignition system are designed for the enthusiast that is serious about performance but needs the small cap size due to space considerations when installed.
Engine Rotating Kits
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Churn out all the asphalt-chewing, road-grating horsepower you want with our massive selection of rotating assemblies! SpeedmasterTM kits bring together everything you need.
Top End Kits
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Speedmaster has taken the guesswork out of top-end component selection by actually placing the top end components together in complete kits. They include almost everything you need to make serious horsepower.
Cylinder Heads
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Performance cylinder heads enhance the airflow into your engine, giving you improved power and torque. Bolt on a set of Speedmaster's fully assembled cylinder heads for instant power gains.
Fuel Injection Systems
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Speedmaster™ line of EFI systems is all you need when deciding to upgrade your engine to modern electronic fuel injection. Our EFI systems provide excellent throttle response throughout the RPM range along with smooth engine operation.
Superchargers, Roots Style Kits
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Speedmaster’s 6-71 Street Supercharger kits can give you 45-55 percent more streetable power. They feature double-pinned rotors (timed and clearanced after assembly), heavy duty front and rear bearing plates, and an intake manifold.
Crate Engines
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Speedmaster crate engines have become a huge success all over the world. We deliver reliable horsepower, torque and drivability. We use only quality name brand parts that we trust giving our customers a superior product for their money.
Third Member Complete Assembly
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Assembly has been carried out at the Speedmaster’s TDS Department by the Head differential technician. Quality is assured with 40 years experience in the Differential Industry and full involvement in all forms of motorsport from V8 SUPERCAR To Group 1 Drag Racing.
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Bore Size & Bore/Stroke Ratio Calculator | Speedmaster Tools
Calculate Bore Size and Bore/Stroke Ratio
Calculate bore size from engine displacement, stroke, and number of cylinders.
Engine Size
ci
cc
Stroke
in.
mm
Cylinders
4
6
8
10
12
Calculate
Bore Size
—
Bore/Stroke Ratio
—
Speedmaster Tools
Engine / Performance
Bore Size & Bore/Stroke Ratio
Carburetor Size Needed
Engine Size
Engine Compression Ratio
Fuel Injector Flow from Fuel Pressure
Fuel Injector Sizing from HP
Horsepower from Intake Airflow
Horsepower Gain from Blower Pressure
Intake Airflow from Horsepower
Rod Stroke Ratio
Stroke Size
Turbo / Supercharger Sizing
Air/Fuel Ratio
Drivetrain / Tires
Rear End Gear Ratio Needed
Speed from RPM & Gear Ratios
RPM from Speed & Gear Ratios
Tire Size Comparison
Speedometer Correction
Drag Strip
⅛ Mile HP from MPH
⅛ Mile HP from ET
⅛ Mile ET from MPH
¼ Mile MPH from Horsepower
¼ Mile HP from MPH
¼ Mile HP from ET
¼ Mile ET from Horsepower
¼ Mile ET from MPH
MPH from 60ft Time
General
Weight-to-Power Ratio
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