Top Street Performance Pro Billet Distributor Chevy SBC BBC V8 Black

TSP Pro Billet Distributor — High-Performance Magnetic Pickup Trigger

The Top Street Performance (TSP) Pro Billet Distributor is a CNC-machined aluminum trigger distributor designed for use with an external CDI ignition control box. It provides the magnetic pickup signal and delivers spark to each cylinder, while the external ignition box handles ignition logic, timing management, and coil firing. This unit is built for carbureted Gen. I small block V8 (262–400 CID) and standard-deck Mark IV big block V8 (396, 402, 427, and 454 CID) engines.

This distributor uses mechanical advance only and contains no vacuum advance. The compact billet housing offers additional clearance in performance engine bays where full-size housings or aftermarket intakes may interfere with valve covers or other components. An external ignition coil rated at 35,000 volts or higher is required for operation.

Key Specifications

Engine Compatibility & Fitment

This distributor is engineered for Chevrolet Gen. I small block V8 engines (262, 265, 267, 283, 302, 305, 307, 327, 350, and 400 CID) and Chevrolet Gen. II (Mark IV) standard-deck big block V8 engines (396, 402, 427, and 454 CID) in carbureted applications.

Total compatible vehicle applications: 809 across Chevrolet, GMC, Pontiac, and Avanti platforms. The distributor fits standard-deck configurations only.

Compatibility Exclusions

• Tall-deck big block engines (e.g., tall deck 427 truck engines)
• Governor-equipped applications
• LS-based or EFI systems
• Generator-based electrical systems (requires alternator/12-volt system)
• Ballast resistor setups

Installation & System Requirements

External Ignition Box Required: This Pro Billet distributor is a trigger unit, not a self-contained ignition upgrade. It requires an external CDI or electronic ignition control box (such as the MSD 6A, MSD 6AL, Mallory HyFire, Crane HI-6, or Accel) to operate. Without a compatible box wired into the system, this distributor will not function.

External Coil Required: An external ignition coil rated at 35,000 volts or higher must be sourced separately and matched to your specific external control box.

Mechanical Advance Operation: All timing advance is delivered through the mechanical (centrifugal) advance mechanism built into the distributor housing. Because there is no vacuum advance, this setup is optimized for performance and race builds where full mechanical control at RPM is prioritized over idle fuel economy.

What's Included

• Distributor assembly
• Distributor cap and rotor
• Vacuum advance adjustment tool
• Installation instructions

Note: External ignition control box and high-voltage coil are not included.

Key Features

• Engineered for Chevrolet Gen I Small Block V8 (262–400 CID) and Gen II Big Block V8 (396–454 CID) applications.
• Compact billet aluminum housing offers improved clearance for tight engine bays with aftermarket components.
• Features a magnetic pick-up trigger and mechanical advance for precise ignition timing in performance setups.
• Requires an external ignition box and coil capable of delivering 35,000+ volts for reliable high-RPM spark delivery.
• Includes vacuum advance adjustment tool and installation instructions for straightforward setup.

Frequently Asked Questions

Which engines does this Pro Billet Distributor fit?
This distributor fits Chevrolet Gen I small block (262–400 CID) and Gen II Mark IV big block (396–454 CID) engines in carbureted applications. It is not compatible with tall-deck big block engines or governor-equipped applications.

Does this distributor include a coil?
No, the distributor does not include a coil. An external ignition coil rated at 35,000+ volts is required for operation.

Is an external ignition box required for this distributor?
Yes, an external ignition box such as MSD 6A, 6AL, or equivalent is required. Without this, the distributor will not function.

Does this distributor have a vacuum advance?
No, this distributor uses mechanical advance only. Timing adjustments are controlled by the mechanical advance mechanism and external ignition box features.

Is this distributor compatible with Chevrolet C/K trucks?
Yes, it is compatible with Chevrolet C/K trucks from 1955–1987, as long as they use the specified engines. Tall-deck big block engines are excluded.