The MSD 6 HVC-L shares the same advanced circuitry as the 6 HVC, producing incredible voltage and high current output, with a heat sink, solid component mounting, and clear epoxy potting for vibration protection. It adds a built-in Soft Touch Rev Limiter that protects the engine from overrev damage caused by spins, missed shifts, or driver misfortune, eliminating the need for a separate external rev control and its extra wiring and weight.
Specifications:
- Product Type: Ignition Box
- Color: Black
- Primary Voltage: 550V / Secondary Voltage: 40,000V
- Spark Energy: 150 mJ per spark
- Maximum RPM: 15,000 RPM (at 14.4V)
- Voltage Required: 12-18V, Negative Ground
- Spark Series Duration: 20° crankshaft rotation
- Rev Limiter: Built-in Soft Touch Rev Limiter
- Weight & Size: 5.1 lbs., 8"L x 4"W x 2.25"H
- Part Number: 6632
Must be used with MSD HVC Coil PN 8250; accepts breaker points, amplifier, or magnetic pickup trigger inputs and uses a 6-pin weathertight connector required for NASCAR use.
Compliance: This part is legal for sale and use on Racing Use Only Vehicles — competition vehicles that are not registered and never operated on the street. It is against the law to install this part on an Emissions Controlled Vehicle (1966-and-newer California-certified or 1968-and-newer federally certified vehicles).
FAQ
What's the difference between the 6631 and the 6632?
The 6632 (6 HVC-L) adds a built-in Soft Touch Rev Limiter, so no external rev control module or extra wiring is needed, while the 6631 uses a Fast Rev Limiter instead.
Is the MSD 6632 street legal?
No. It carries Emission Code 4, meaning it's legal for sale and use only on Racing Use Only vehicles — competition cars never registered or driven on the street.
What coil is required with the 6 HVC-L?
MSD's HVC Coil, PN 8250, is required to achieve its 550-volt primary output and 150 mJ spark energy.
What is the maximum RPM rating?
The 6 HVC-L is rated to 15,000 RPM at 14.4 volts.
