Page 420 - 2020-2021 Racecar Engineering Drag Racing Parts and Accessories Catalog

2020 DRAG RACING

Two Step Rev Control For Digital 6AL Launch Control Module Selector
MSD8732 MSD8735
Engineered exclusively for use with the Digital 6AL Make last-second launch RPM adjustments right from
ignition, two-step unit allows changing starting line the driver’s seat. Three-step module selector also has
limit RPM right from the driver’s seat. Easy-to-read rotary RPM limits for burn-out and top end. Plug-in modules must be purchased
dials allow setting RPM limits in 100 RPM increments. separately.
Activation wire connects to the transbrake, clutch switch,
or line lock to activate the low-RPM limit. Once the switch is released, the RPM Activated Switches
low-RPM limit is deactivated as the car launches. Used for many functions, from turning on a bulb or
solenoid to starting a timing computer. Switch has
Two Step For two wires, one ground and one to open a circuit. Plug in an RPM
Ford Modular Motors
module and wire the switch to the circuit. Once the engine reaches the se-
Specifically designed for late model Ford lected RPM, the circuit is active until RPM drops below that point. Window
modular powered applications, two-step rev limiter switch includes two RPM circuits, one to start and one to discontinue and is
helps provide quick, consistent launches. Adjustable from 1,800- ideal for nitrous applications where the system must be shut down before
9,900 RPM using two built-in rotary dials. Connects to the OEM RPM limit is reached. Compatible with stock inductive or MSD ignitions.
coils for quick, easy installation. MSD8734 RPM modules not included.
Part No. Description Part No. Description
MSD8731 Ford 5.0L Coyote MSD8950 RPM Switch
MSD87311* Ford 5.0L Coyote, 2/23/16 & Newer Build Date NEW! MSD8956 RPM Window Switch
MSD8734 Ford 4.6L Modular
*Except direct injected 5.0L. Digital RPM Window Switch
MSD8969
Two Step For GM LS
Switch turns circuits on and off at specific RPM
Two step provides quick, consistent launches to intervals. Accepts an RPM input signal from a negative coil terminal
GM LS or LT applications. RPM controller allows setting a or a tach output from an ignition control or an ECU. Switch has
specific RPM limit for the starting line, improving reaction and 200 to 15,000 RPM capability.
elapsed times. Easy to connect with direct, plug-in connections. MSD8733
Part No. Description Digital Shift Light
MSD8733 GM LS, 24x or 58x Trigger Wheels
MSD87331 GM Gen. V LT NEW! Compact universal shift light is compatible
with distributors, coil packs, or coil-on-plug ignitions. Six bright LED’s are
Three Step Mod ule Se lec tor programmed to illuminate from 100-15,900 RPM in 10 RPM increments.
MSD8737 GMR pickup is included.
Use with the soft touch rev Con trol or MSD ignitions. Part No. Description
It has all the features of the Two Step with an additional RPM limit. MSD8963 Digital Shift Light, Sync Shift
Typically used to limit burn-out, starting line, and top-end RPM. Order RPM MSD89631 Digital Shift Light, Single RPM Point
mod ules separately.
Shift Light
MSD8952
Adjustable Low RPM Module The MSD Shift Light will turn on at what ev er spec i fied
MSD8677
RPM is chosen. Plug the RPM module in the front of the Shift Light. Uses
Ideal for automatic transmission-equipped drag race cars with two- or any RPM module from kits listed below.
three-step rev limiters. Module may be adjusted to limit starting line RPM
between 1,000 and 3,000 RPM. RPM Module Kits

Each RPM Module Kit contains five modules within
RPM Module Selectors
RPM ranges from 3,000 to 10,900. Compatible
Plug this selector into a MSD Soft Touch Rev Control, with all MSD accessories that require modules. MSD8744
or any other accessory that uses a plug-in module, Available in even and odd increments.
and turn the knob to select from among 12 different Even Increments Odd Increments
RPM limits. Description Part No. Part No.
MSD8673
Part No. Description 3,000-3,900 RPM MSD8743 MSD87431
MSD8670 3000-5200 RPM 4,000-4,900 RPM MSD8744 MSD87441
MSD8671 4600-6800 RPM 5,000-5,900 RPM MSD8745 MSD87451
MSD8672 6000-8200 RPM 6,000-6,900 RPM MSD8746 MSD87461
MSD8673 7600-9800 RPM 7,000-7,900 RPM MSD8747 MSD87471
8,000-8,900 RPM MSD8748 MSD87481
9,000-9,900 RPM MSD8749 MSD87491
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