MSD 8628 Advance Weight Kit for Pro Billet Distributors

The MSD 8628 Advance Weight Kit is a precision-engineered mechanical advance component designed for use with MSD Pro Billet and standard Billet distributors. This kit allows engine builders and tuners to fine-tune the mechanical advance curve to match the specific needs of their engine combination, optimizing ignition timing for maximum power and efficiency.

The mechanical advance system in a distributor controls how quickly ignition timing advances as engine RPM increases. By swapping advance weights, you can control the rate and total amount of mechanical advance — a critical tuning variable for street performance, racing, and engine builds running aggressive camshaft profiles or forced induction.

Kit Includes:

• 2 Advance weights
• 2 Bushings/spacers
• 2 Weight pads

Key Features:

• Compatible with all MSD Billet and Pro Billet distributors
• Enables custom timing curve tuning for your specific application
• Fits Chevy, Ford, and Chrysler MSD distributor applications
• Legal for use on emissions-controlled and non-emissions-controlled vehicles
• Made in the USA

The MSD 8628 Advance Weight Kit is an essential tuning component for anyone looking to dial in their distributor's advance curve. Whether building a street cruiser, bracket racer, or high-performance engine, having the correct advance weights ensures optimal combustion timing across the RPM range.