speed-signal-interface-sn74z
speed-signal-interface-sn74z
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Material:
Overview:
Classic Instruments Speed Signal Interface
Speed Signal Interface (Converts VSS/ECM speed signals to either 8k or 16k PPM)
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
Later model 700R4's
Typically a sine wave signal
Two wire pulse signal generator input source
Classic Instruments SN96 or SN95
Typically a sine wave signal
One wire ECM signals input source
Typically a 5 volt square wave
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
The SN74Z has the following features when used as a Tachometer interface.
Input Source Options
High Voltage Coil signal input source
.5-6 pulses per revolution (1-12 cylinder engine)
Typically the negative side of an ignition coil
5-12V Square Wave signal input source
.5-6 pulses per revolution (1-12 cylinder engine)
20%-50% duty cycle
Typically from an electronic ignition box or computer
Inductive Gear tooth sensor input source
Typically used in diesel applications where there is not an ignition system
The sensor can be mounted to the engine near the flywheel to sense the gear teeth as they rotate by
Can be used with 32-510 tooth flywheels, 32-510 pulses per revolution
Output
Signal output
12V square wave, 50% duty cycle
2, 3, or 4 pulses per revolution (4, 6, or 8 cylinder)
3 preset flywheel tooth settings
148 tooth - Chevy Duramax
152 tooth - 5.9L Cummins
155 tooth - 7.3L Ford Powerstroke
Specs:
| Application | Universal |
|---|---|
| Bezel Included | No |
| Brand | Classic Instruments |
| Emission Code | 6 |
| Finish | Black |
| Product Type | Speed Signal Interface |
| Warning | California Proposition 65 |
Policies and FAQs
Return Policy
Fault reasons include but are not limited to:
- Buyer was shipped the wrong product
- Buyer was shipped a damaged product
- The product page had incorrect fitment and the part does not fit the Buyer's vehicle
Opened boxes, plastic bags, and other packaging are not considered damage (excluding single use items such as, but not limited to, liquids, software, and other components that cannot be reused/resealed).
FAQs
|Q. What is an Intermediate Brake Line?
|A. This is the line that runs from the front of the vehicle to the rear. On most vehicles it connects to a junction then you will have rear axle lines. On a few cars the intermediate lines will connect to the rear wheels. It is recommended to change the axle lines if you are replacing the intermediate lines.
|Q. What is included in a pre bent brake line kit?
|A. Our kits include all of the solid metal lines for that section of the vehicle
|Q. I need to return something - what's your return policy?
|A. We are happy to help! Please help us to help you by going to our return form and filling out the form as best as you can in order to request a return.
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Modern Day stands by our parts and is happy to accept returns within 30 days of purchase. Parts must be in new condition.
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If a part arrives damaged, or is defective, Please report it to us immediately. So we can handle it for your promptly.