Classic Instruments(r) Speed Signal Interface

• Quality Resto-Mod Part
• A Great Upgrade For Classic Instruments® Gauge Packages
• Made In USA
• Classic Instruments® Offers A Full 5 Year Warranty On All Orders!

The SN74Z has the following features when used as a Speedometer interface:

Input Source Options

• Three wire pulse signal generator input source
• Built-in Vehicle Speed Sensor (VSS) input source - Most Tremec transmissions and later model 700R4’s         
• Two wire pulse signal generator input source
• Classic Instruments SN96 or SN95
• One wire ECM signals input source

Output

• The output can be selectable between either 8000 pulse per mile or 16000 pulse per mile
• Outputs a 12V square wave, 50% duty cycle
• 8000 pulse per mile cruise control output

Additional Benefits

• Three different calibration options
• Instant: drive 30 MPH and press the calibration button
• Real-Time: press and the hold the calibration button to match the speedometer reading to the actual vehicle speed
• Marked Mile: Drive a measured mile to calibrate the speedometer
• Input signal can range from 2000-200,000 pulses per mile
• State of the art signal averaging software that ensures smooth pointer operation, even in fluctuating signal conditions.
• Noise-reducing, filtered power output for powered speedometer signal generators

Classic Instruments® and MAC's are proud to be partners helping enthusiasts build their dreams!

Speed Signal Interface From Classic Instruments®