Page 461 - 2022-23 Auto Performance Drag Racing

Two-Step Rev Control for Digital 6AL
MSD8732
Engineered exclusively for use with the
Digital 6AL ignition, two-step unit allows
changing starting line limit RPM right from
the driver’s seat. Easy-to-read rotary dials al-
low setting RPM limits in 100 RPM increments.
Activation wire connects to the transbrake, clutch switch, or line lock to activate the low-RPM limit. Once the switch is re- leased, the low-RPM limit is deactivated as the car launches.
DRAG RACING
Launch Control Module Selector
MSD8735
Make last-second launch RPM adjustments
right from the driver’s seat. Three-step module
selector also has RPM limits for burn-out and top end. Plug-in modules must be purchased separately.
RPM Activated Switches MSD8950
Used for many functions, from turning on
a bulb or solenoid to starting a timing com-
puter. Switch has two wires, one ground
and one to open a circuit. Plug in an RPM module and
wire the switch to the circuit. Once the engine reaches the selected RPM, the circuit is active until RPM drops below that point. Window switch includes two RPM circuits, one to start and one to discontinue and is ideal for nitrous applications where the system must be shut down before RPM limit is reached. Compatible with stock inductive or MSD ignitions. RPM modules not included.
Part No. Description
Digital RPM Window Switch
MSD8969
Switch turns circuits on and off at
specific RPM intervals. Accepts an RPM
input signal from a negative coil terminal or a tach
output from an ignition control or an ECU. Switch has 200 to 15,000 RPM capability.
Digital Shift Light
Compact universal shift light is
compatible with distributors, coil
packs, or coil-on-plug ignitions. Six
bright LED’s are programmed to illuminate from 100-15,900 RPM in 10 RPM increments. GMR pickup is included.
Two-Step for
Ford Modular Motors
Specifically designed for late
model Ford modular powered applica-
tions, two-step rev limiter helps provide quick, consistent launches. Adjustable from 1,800-9,900 RPM using two built-in rotary dials. Connects to the OEM coils for quick, easy installation.
MSD8734
Part No.
*Except direct injected 5.0L.
Two-Step for GM LS
Description
MSD8733
MSD8950
RPM Switch
MSD8956
RPM Window Switch
MSD8731
Ford 5.0L Coyote
MSD87311*
Ford 5.0L Coyote, 2/23/16 & Newer Build Date
MSD8734
Ford 4.6L Modular
Two step provides quick, consistent
launches to GM LS or LT applications. RPM
controller allows setting a specific RPM limit for
the starting line, improving reaction and elapsed times. Easy to connect with direct, plug-in connections.
Part No. Description Three-Step Module Selector MSD8737
MSD8963
MSD8733
GM LS, 24x or 58x Trigger Wheels
MSD87331
GM Gen. V LT
Use with the soft-touch rev control or MSD
ignitions. It has all the features of the Two
Step with an additional RPM limit. Typically
used to limit burn-out, starting line, and
top-end RPM. Order RPM modules separately. Compatible with a Soft Touch Rev Control or any MSD Timing Control that uses plug-in modules.
Adjustable Low-RPM Module MSD8677
Ideal for automatic transmission-equipped drag race cars with two- or three-step rev limiters. Module may be adjusted to limit starting line RPM between 1,000 and 3,000 RPM.
Part No.
Shift Light MSD8952
Description
MSD8963
Digital Shift Light, Sync Shift
MSD89631
Digital Shift Light, Single RPM Point
RPM Module Selectors
MSD8673
The MSD Shift Light will turn on at what- ever specified RPM is chosen. Plug the RPM module in the front of the Shift Light. Uses any RPM module from kits listed below.
RPM Module Kits
Each RPM module kit contains five mod- ules within RPM ranges from 3,000 to 9,900. Compatible with all MSD acces- sories that require modules. Available in even and odd increments.
Plug this selector into a MSD Soft-Touch Rev Control, or any other accessory that uses a plug-in module, and turn the knob to select from among 12 different RPM limits.
Part No. Description
MSD8744
Description
Even Increments Part No.
Odd Increments Part No.
3,000-3,900 RPM
MSD8743
MSD87431
4,000-4,900 RPM
MSD8744
MSD87441
5,000-5,900 RPM
MSD8745
MSD87451
6,000-6,900 RPM
MSD8746
MSD87461
7,000-7,900 RPM
MSD8747
MSD87471
8,000-8,900 RPM
MSD8748
MSD87481
9,000-9,900 RPM
MSD8749
MSD87491
MSD8670
3000-5200 RPM
MSD8671
4600-6800 RPM
MSD8672
6000-8200 RPM
MSD8673
7600-9800 RPM
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2022-23