MSD HEAT Digital HEI Module with Adjustable Rev Limiter for GM 4-Pin Distributors 83647

MSD Heat Digital GM HEI Module with Adjustable Rev Limiter

The MSD Heat Digital GM HEI Module is a high-performance ignition control module designed to enhance the efficiency and reliability of GM 4-pin HEI distributors. It features a built-in adjustable rev limiter, allowing precise RPM control without removing the distributor cap, and is compatible with both stock and MSD Pro-Billet HEI distributors, offering versatility for various applications.

• High Output Performance: Delivers up to 8.5 amps of current, ensuring strong spark energy for improved combustion efficiency.
• Adjustable Rev Limiter: Enables external setting of the rev limit between 5,000 and 10,000 RPM, providing over-rev protection tailored to your engine's needs.
• Advanced Dwell Control: Offers precise dwell timing for enhanced high RPM performance and coil saturation.
• Easy Installation: Designed for straightforward installation into non-computer controlled (4-pin) HEI housings, making it suitable for a wide range of GM vehicles.
• Compatibility: Fits in stock HEI distributors and is also compatible with MSD Pro-Billet HEI distributors, providing flexibility for various setups.

• Brand: MSD
• Part Number: 83647
• Ignition Type: Performance
• Voltage Required: 12 Volts
• RPM Range: Up to 10,000 RPM
• Dimensions: 1.75 inches (Height) x 6.05 inches (Width) x 7.85 inches (Length)
• Warranty: Limited 1-Year Warranty
• Emission Code: 1 (Legal for sale and use on emissions-controlled vehicles in all 50 states)