Page 403 - 2018 Racecar Engineering Drag Racing Parts and Accessories Catalog

Two Step Mod ule Se lec tor Launch Control Module
MSD8739 Selector MSD8735
When used with the Soft Touch Rev Con trol Make last second launch RPM adjustments
or MSD ignition unit, Two Step Mod ule Selec- right from the driver’s seat. Three Step Module
tor allows the user to switch be tween two dif fer ent RPM limits. Selector has RPM limits for burn-out and top
RPM modules must be purchased separately. end. Plug-in modules must be purchased separately.
Two Step Rev Control RPM Activated Switches
For Digital 6AL MSD8732 Used for many functions, from turn-
Engineered exclusively for use with the ing on a bulb or solenoid to starting a
Digital 6AL ignition, two-step unit allows chang- timing computer. Switch has two wires,
ing starting line limit RPM right from the driver's one ground and one to open a circuit.
seat. Easy-to-read rotary dials allows setting Plug in an RPM module and wire the
RPM limits in 100 RPM increments. Activation wire switch to the circuit. Once the engine
connects to the transbrake, clutch switch or line lock to activate reaches the selected RPM, the circuit is active until
the low RPM limit. Once the switch is released, the low RPM limit RPM drops below that point. Window switch includes
is deactivated as the car launches. two RPM circuits, one to start and one to discontinue and is ideal
for nitrous applications where the system must be shut down
Two Step For Ford MSD8734 before RPM limit is reached. Compatible with stock inductive or
Modular Motors MSD ignitions. RPM modules not included.
Specifically designed for late model Part No. Description
RPM Switch
Ford modular powered applications, two-step MSD8950 RPM Window Switch
MSD8956
rev limiter helps provide quick, consistent launches.
Adjustable from 1,800-9,900 RPM using two built-in Digital RPM
rotary dials. Connects to the OEM coils for quick, easy
installation. Window Switch MSD8969
Part No. Description Switch turns circuits on and off
MSD8731 Ford 5.0L Coyote at specific RPM intervals. Accepts
MSD8734 Ford 4.6L Modular an RPM input signal from a negative coil
terminal or a tach output from an ignition control or an
Two-Step For GM LS ECU. Switch has 200 to 15,000 RPM capability.
MSD8733
Two-Step provides quick, Digital Shift Light
consistent launches to GM LS
applications. RPM controller allows Compact, universal Shift Light is
setting a specific RPM limit for the starting compatible with distributors, coil
line, improving reaction and elapsed times. Easy packs or coil-on-plug ignitions. Six
to connect with direct, plug-in connections. bright LED's are programmed to illuminate from 100-15,900 RPM
in 10 RPM increments. GMR pickup is included.
Three Step Mod ule Se lec tor Part No. Description
MSD8963
Digital Shift Light, Sync Shift
MSD8737 MSD89631 Digital Shift Light, Single RPM Point
Use with the Soft Touch Rev Con trol or
MSD Ignitions. It has all the features of Shift Light MSD8952
the Two Step with an additional RPM limit. The MSD Shift Light will turn on at what ev er
Typically used to limit burn-out, starting spec i fied RPM is chosen. Plug the RPM module
line and top end RPM. Order RPM mod ules in the front of the Shift Lite. Uses any RPM
separately.
module from kits listed below.
Adjustable Low RPM Module MSD8677
Ideal for automatic transmission equipped drag RPM Module Kits MSD8744
race cars with two- or three-step rev limiters. Each RPM Module Kit contains five
Module may be adjusted to limit starting line RPM modules within RPM ranges from 3,000
between 1,000 and 3,000 RPM. to 10,900. Compatible with all MSD
accessories that require modules. Avail-
RPM Module Selectors able in even and odd increments.
Plug this selector into a MSD Soft Touch Even Increments Odd Increments
Rev Control, or any other accessory that Description Part No. Part No.
uses a plug-in module, and turn the knob to 3,000-3,900 RPM MSD8743 MSD87431
4,000-4,900 RPM
MSD8744
MSD87441
select from among 12 different RPM limits. 5,000-5,900 RPM MSD8745 MSD87451
Retards timing in increments of 0°-11°. 6,000-6,900 RPM MSD8746 MSD87461
7,000-7,900 RPM MSD8747 MSD87471
Part No. Description
MSD8670 3000-5200 RPM MSD8673 8,000-8,900 RPM MSD8748 MSD87481
MSD8671 4600-6800 RPM 9,000-9,900 RPM MSD8749 MSD87491
MSD8672 6000-8200 RPM
MSD8673 7600-9800 RPM
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