Accel/dfi – Mallory Ignition ACCEL CHEVROLET APPLICATIONS (including LT-1) 74022 User Manual

Page 11

ACCEL/DFI

KNOCK SENSOR HARNESS KIT
(PART NUMBERS 74174- S.B. CHEVY 74175 B.B. CHEVY)

The knock sensor harness kit allows the end user to
incorporate a GM knock sensor to detect detonation and
automatically retard the spark timing. The kit comes with a
harness which interfaces between the GM ESC Module, GM
knock sensor and ECM. Since these sensor are calibrated for
Chevrolet engines only they can only be used on Chevrolet
engines.

FAN CONTROL KIT (PART NUMBER 74171)

This kit includes a harness with integral relay that interfaces
between the ECM and the fan. This kit allows you to turn on
an electric fan at a given engine temperature via CALMAP.
This kit does not include a fan.

TORQUE CONVERTOR LOCKUP KIT
(PART NUMBER 74172)

This kit includes a harness with integral relay that interfaces
between the ECM and 700R4 Converter Lockup connector.
This kit allows you to lockup and unlock the converter at a
prescribed speed (RPM), and throttle position (TPS) using
the CALMAP software. Be advised that if your 700R4 is in a
truck (or came out of a truck) that some additional wiring
and an extra relay will be required.

NITROUS CONTROL KIT
(PART NUMBERS LISTED BELOW)

S.B. Single Stage Part Number 74172

B.B. Single Stage Part Number 74182

S.B. Multi Stage Part Number 74183

B.B. Multi Stage Part Number 74181

This kit includes a harness with integral relay that interfaces
between the ECM and the nitrous solenoid. The kit
also comes with a toggle switch, nitrous plate (which
bolts between the plenum and the throttle body), and the
necessary lines and fittings. This kit enables you to control a
nitrous solenoid and at the same time controls spark timing
and fuel enrichment.