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Product Summary

Capacitive Discharge Ignition Box Output, Red, Red

  • Gives you the ability to retard the ignition timing 1 degrees-3 degrees per pound of boost, up to a maximum of 15 degrees
  • It accepts breaker points, amplifier and magnetic pickup trigger inputs
  • The built-in Soft Touch Rev Control is adjustable with RPM Modules
  • Can be programmed for 4, 6, or 8-cylinders by simply cutting red/blue wire loops
  • Provides 110 millijoules per spark up to 15,000 RPM

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Key Specs

D-40-28
MFG. Part #6462
BrandMSD
Ignition Box OutputCapacitive Discharge
CircuitryAnalog
CARB EO#
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MSD 6462 Details

The 6 BTM is ideal for engines with a turbo or supercharger. Not only will the engine benefit from MSD's full power CD sparks, but there is also an adjustable boost/timing retard circuit to prevent detonation. When your turbo or blower forces the air/fuel mixture into the engine, the cylinder pressure inside the combustion chamber increases. The result is a great increase in power but this can also lead to detonation that can result in severe engine damage. The 6 BTM lets you dial away detonation by retarding the timing in relation to the boost pressure.

A dash-mounted control knob lets you adjust the amount of timing retard. It can be adjusted from 0 degrees per pound of boost to 3 degrees per pound (up to 15 degrees). The 6 BTM also shares the Soft Touch Rev Control of the 6AL Ignition for overrev protection. The BTM is supplied with rubber shock mounts and rpm modules for 3,000, 6,000, 7,000, and 8,000 rpm.

Features:

  • Multiple spark, capacitive discharge ignition control
  • Supplied with 3,000, 6,000, 7,000 & 8,000 RPM Module
  • Supplied with rubber shock mounts
  • Programmable for 4, 6, or 8-cylinders by cutting red/blue wire loops
  • Built-in Soft Touch Rev Control is adjustable with RPM Modules
  • 110 millijoules per spark up to 15,000 RPM
  • 470 primary voltage output to coil
  • Accepts breaker points, amplifier and magnetic pickup trigger inputs
  • Works on 12 - 18 volt electrical system
  • Multiple sparks for 20° of crankshaft rotation
  • Retard the ignition timing 1 degrees-3 degrees per pound of boost, maximum of 15 degrees, with dash mounted adjustable control knob
  • CARB E.O. Approved

Learn more about determining the proper MSD ignition control box for your application by reading our tech article. MSD Ignition Box: Ignition Controller Buyer's Guide

Rebates

Holley Fuel Up Spring Savings Event 2026

Save 10% instantly on select products across the Holley family of performance brands during the annual Holley Fuel Up Spring Savings Event 2026. Instant rebate period runs from March 30, 2026 through April 19, 2026.

MSD 6462 Specifications

D-40-28
KEY SPECS
MFG. Part #6462
BrandMSD
Ignition Box OutputCapacitive Discharge
CircuitryAnalog
CARB EO#
GENERAL
Rev Limiter IncludedYes
Data AcquisitionNo
Timing RetardOne-stage
Coil IncludedNo
Primary Voltage520-540 Volts output to coil
Spark Output115 MJ
Voltage Required12-15 Volts, 7 Volt Start
Current Draw1 amp per 1000 RPM
Ignition Box ColorRed
GTIN Code085132064625
Overall Length8.00"
Overall Width4.00"
Overall Height2.25"
ColorRed
NotesEven-fire only on V6. Not distributorless igntion system compatible.

Ratings & Reviews

5

4 Reviews

Overall Assessment

Customers praise the product for its top-notch quality and practicality. They highlight its comprehensive features, specifically for use with a Project SBC 350 with a 6-71 Blower. Users emphasize its usability and excellent material quality, citing it as a stand-out compared to competitors. The product is also lauded for its detailed instruction manual, which covers various wiring configurations. Verdict: highly recommended by customers for its superior features and quality.

5

4 reviews

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I would buy again

5.0

2 months ago

Les

Pueblo Colo

Verified

Easy installation with good instructions. Works as advertised

Would Recommend

I would buy it again! But hope I will not have too! LOL

5.0

4 years ago

54 GMC Trucker

Orange, CA

Verified

This add all the features need when added to my Project SBC 350 with a 6-71 Blower.

Would Recommend

Msd only the best .

5.0

6 years ago

Dustin

Iowa

Verified

Very nice quality .

Would Recommend

Perfect for what I needed!

5.0

7 years ago

Bigmil

Dayton, OH

Verified

Exactly as described and came with a great manual to show all the different wiring configurations

Would Recommend

Showing 4 of 4 reviews

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