ELECTRICAL /IGNITION SYSTEMS IGNITION & ELECTRONIC CONTROL MODULE SYSTEMS  Ignition Components
A. 10037378
Ignition Control, High-Performance CD
• Capacitive discharge ignition control can be used on foursix- or eight -cylinder racing engines
• Each spark is at full power from idle to racing rpm
• Below 3000 rpm there is a series of sparks that last for 20 of crankshaft rotation
• Ignition box is supplied with shock mounts
Use with GM heavy-duty electronic distributors P/N 10134355, P/N 10051133 and P/N 10051134.
Do not use with production HEI system.
B. 10037380
Coil, High-Performance CD
• 100:1 turns ratio and maximum output voltage of 45,000 volts
• 0.7 ohms primary resistance and 10,500 ohms secondary resistance
• Use with ignition control P/N 10037378  C. 10039932
Ignition Wire Harness (Engine Compartment-mounted)
• Will connect all GMPP heavy-duty electronic distributors to ignition control P/N 10037378 when the control box is mounted in the engine compartment
D. 10037376
Change-Over Switch
• With this convenient switch, you can change between two heavy-duty ignition controls (P/N 10037378)
• Direct plug-in with Weather- Pack connectors 10037379
Rev Limiter for CD Ignition Control (not shown)
• Plugs directly into the GM High Performance CD Ignition Control P/N 10037378
• RPM limit is set with plug-in rpm modules
• When engine reaches set limit, sparks are cut to cylinders
• Kit is supplied with 6000, 7000, and 8000 modules 19166567 NEW
Controller and Wiring Harness, LS7 (not shown)
• For crate engine P/N 17802397
• Includes PCM and wiring harness
• Non-programmable
• Includes electrical throttle pedal
• Requires production electronic throttle body
19166568 NEW
Controller and Wiring Harness, LS2 (not shown)
• For crate engine P/N 19156261
• Includes PCM and wiring harness
• Non-programmable
• Includes electrical throttle pedal
• Requires production electronic throttle body RPM LIMIT MODULE KITS 10039933
5000 rpm Module Kit
• Includes 5000, 5200, 5400, 5600, and 5800 rpm modules 10039934
6000 rpm Module Kit
• Includes 6000, 6200, 6400, 6600, and 6800 rpm modules 10039935
7000 rpm Module Kit
• Includes 7000, 7200, 7400, 7600, and 7800 rpm modules
10039936
8000 rpm Module Kit
• Includes 8000, 8200, 8400, 8600, and 8800 rpm modules
These kits are supplied with five rpm modules for the Rev Limiter P/N 10037379 (see page 298). Choose from the following: E
Chevy Small-Block V-8 (Gen I & LS1-Style) 12480112
ECM, LS1 V-8
• Calibrated for the LS1 Camaro/Firebird engine and can be used in a street rod or other early-model vehicles
Use with Camaro/Firebird LS1 engine and wire harness P/N 12480113. 12480054
ECM, LS1/ASA Racing
• LS1 ECM is similar to P/N 16238212, but is calibrated for ASA racing only
• Use with wire harness P/N 12480055 12480055
Wire Harness, LS1,ASA Racing
• Designed for ASA racing ECM P/N 12480054 only
88962717
MEFI 4 ECM, Ram Jet 350
• Replacement ECM for all Ram Jet 350 crate engines, MEFI 3 P/N 12495515 or MEFI 4 P/N 12499120
• MEFI 4 Ram Jet engine is a closed loop system that gives a much smoother idle and improved performance Replacing the ECM on MEFI 3 Ram Jet engine P/N 12495515 requires using new wire harness kit P/N 12499116, or use jumper wire P/N 88963118 to use MEFI 4 ECM as an open loop system.
88961967
MEFI 4 ECM Wire Harness, Ram Jet 350
• Designed to be used with the MEFI 4 Ram Jet 350 P/N 12499120 and MEFI 4 ECM P/N 88962717 12499116
MEFI 4 ECM & Wire Harness Kit, Ram Jet 350
• Used to convert a Ram Jet 350 from MEFI 3 to the newer MEFI 4 design, which provides a better idle through closed-loop operation
• Includes ECM module P/N 88962717, wire harness P/N 88961967, oxygen sensor P/N 25312200, intake air temp sensor P/N 25036751, oxygen sensor fitting P/N 15156588 ECM is programmed with a "green mode" that controls the rpm for the break-in period. From start up to the end of first hour is 4000 rpm, second hour is 4500 rpm, and third hour is 5500 rpm. 15156588
Fitting, Oxygen Sensor
• Used on all MEFI 4 electronic controlled ignition systems
• Should be welded into the exhaust pipe so the oxygen sensor can be screwed in to the exhaust system 12489492
MEFI 3 ECM Wire Harness, Ram Jet 350
• Designed for use with the MEFI 3 350 Ram Jet engine P/N 12495515 using ECM P/N 12489488 | Chevy Big-Block V-8 88962718
ECM, Ram Jet 502
• Replacement ECM for all Ram Jet 502 engines (MEFI 3 P/N 12497323 or MEFI 4 P/N 12499121)
• MEFI 4 Ram Jet engine is a closed loop system that gives a much smoother idle and improved performance Replacing the ECM on MEFI 3 Ram Jet engine P/N 12497323 requires using new wire harness kit P/N 12499117 or use jumper wire P/N 88963118 to use MEFI 4 ECM as an open loop system.
12499117
MEFI 4 ECM & Wire Harness Kit, Ram Jet 502
• Module/harness kit is used to convert a Ram Jet 502 from MEFI 3 to the newer MEFI 4 design, which offers improved idle and performance through a closed loop system
• Includes module P/N 88962718, wire harness P/N 88961968, oxygen sensor P/N 25312200, intake air temp sensor P/N 25036751 and oxygen sensor fitting P/N 15156588 The ECM is programmed with a “green mode” that controls the rpm for the break-in period. From start up to the end of first hour is 4000 rpm, second hour is 4500 rpm, third hour is 5500 rpm and fourth hour is 5800 rpm. 88963118
Jumper Harness, MEFI 3 to MEFI 4
• Allows an MEFI 4 module to be used with an MEFI 3 wiring system (to stay as an open loop system) 88958621
PROM, 502 Truck Conversions (1991–1993)
• Used in the 502 emission-legal engine conversions for 1991–1993 trucks 88961821
ECM, Ram Jet ZL1, MEFI 3
• Calibrated for the Ram Jet ZL1 engine P/N 88961499 only The MEFI 3 and MEFI 4 ECM Modules cannot be reprogrammed. 12489494
MEFI 3 ECM Harness, 502
• Designed for the MEFI 3 ECM P/N 12489493 on the MEFI 3 Ram Jet 502 engine P/N 12497323
• Part of engine kit P/N 12499121 88961968
MEFI 4 ECM Harness, Ram Jet 502
• Used in the MEFI 4 Ram Jet 502 P/N 12499121 with the MEFI 4 closed loop oxygen sensor-equipped system
• Use with MEFI 4 ECM P/N 88962718
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LECTRONIC CONTROL MODULES & COMPONENTS | 
