Chevy SB/BB V8 Pro Billet Distributor

The TSP Pro Billet Distributor for the Chevy SBC and BBC is a performance magnetic pickup distributor designed for use with an external CDI ignition control box — MSD 6A, 6AL, Mallory HyFire, Crane HI-6, Accel, or equivalent. This is not a drop-in HEI replacement. It is a trigger distributor for builders who run or plan to run a dedicated performance ignition system, where the external ignition box handles ignition control, timing management, and coil firing while this distributor provides the magnetic trigger signal and delivers spark to each cylinder.

An external ignition control box is required. Without a compatible CDI or electronic ignition control box wired into the system, this distributor will not function. An external ignition coil rated at 35,000 volts or higher is also required — neither the box nor the coil is included. If you are looking for a self-contained ignition upgrade that does not require an external box, see the TSP Chevy HEI (JM6501), the small cap Ready-to-Run (JM6701), or the Pro Series Ready-to-Run (JM7715) — all of which have integrated ignition modules and do not require an external control box.

This distributor uses mechanical advance only — no vacuum advance. All timing advance is handled through the mechanical advance curve in the distributor combined with any timing control features built into your external ignition box. The compact billet aluminum housing provides additional clearance in performance engine bays where full-size distributor housings may interfere with aftermarket intakes, valve covers, or other components.

Engine fitment covers the complete Gen. I Chevrolet small block (262–400 CID) and the standard-deck Mark IV big block (396, 402, 427, and 454 CID) in carbureted applications. Not compatible with tall-deck big block engines or governor-equipped applications.

 

Who Is This Distributor For?
The Pro Billet is built for performance and race builds where an external CDI ignition control box is already part of the ignition system plan. Unlike the TSP HEI, small cap Ready-to-Run, and Pro Series distributors — all of which have integrated ignition modules and work without an external box — the Pro Billet is a trigger distributor. It provides the magnetic pickup signal that tells the ignition box when to fire, and it distributes the resulting high-voltage spark to the correct cylinder. All ignition control logic, timing functions, and coil firing are handled by the external box.

If you are building a carbureted SBC or BBC with an MSD 6A, MSD 6AL, Mallory HyFire, Crane HI-6, Accel DFI, or equivalent performance ignition system, this distributor is designed to work within that setup. If you want a self-contained ignition upgrade without an external box, the TSP HEI, small cap Ready-to-Run, or Pro Series are the correct choices.

Mechanical Advance Only — What This Means
This distributor has no vacuum advance. All timing advance is delivered through the mechanical (centrifugal) advance mechanism built into the distributor housing. Many external ignition boxes also offer their own timing advance features — such as the MSD's built-in two-step rev limiter and timing retard — which complement the mechanical advance in the distributor. For street driving where light-throttle vacuum advance contributes to fuel economy and idle quality, a distributor with vacuum advance (the HEI, Ready-to-Run, or Pro Series) is the better choice. For performance and race applications where full mechanical control and maximum advance at RPM is the goal, mechanical-only advance is standard.

Billet Housing — Compact Design
The compact billet aluminum housing provides additional clearance in performance engine bays where larger distributor housings, tall HEI caps, or aftermarket intake manifolds can create clearance problems. The machined aluminum construction keeps weight down and provides a clean, performance-oriented appearance.

COMPATIBLE WITH
CHEVROLET SMALL BLOCK V8 GEN. I
• 4.3 L / 262 in³
• 4.3 L / 265 in³
• 4.4 L / 267 in³
• 4.6 L / 283 in³
• 4.9 L / 302 in³
• 5.0 L / 305 in³
• 5.0 L / 307 in³
• 5.4 L / 327 in³
• 5.7 L / 350 in³
• 6.6 L / 400 in³

CHEVROLET BIG BLOCK V8 GEN. II (MARK IV) — STANDARD DECK ONLY
• 6.5 L / 396 in³
• 6.6 L / 402 in³
• 7.0 L / 427 in³
• 7.4 L / 454 in³

NOTES
• Fits Chevrolet Gen. I small block and Gen. II (Mark IV) standard deck big block V8 engines.
• Requires an external ignition box — not included. Not compatible with HEI coil-in-cap setups.
• Not compatible with tall deck big block engines (366ci, tall deck 427ci truck engines).
• Not compatible with engines using a governor.
• Distributor gear compatibility should be verified with camshaft material prior to installation.
• This distributor is designed for a 12 volt electrical system with an alternator and a performance ignition coil of 35,000 V or more. 
• It is not compatible with a generator and cannot be used with a ballast resistor.

COMMON VEHICLE APPLICATIONS
Chevrolet Camaro (1967–1981)
Chevrolet Chevelle / Malibu / El Camino (1964–1977)
Chevrolet Nova (1966–1979)
Chevrolet Impala / Bel Air / Biscayne (1955–1976)
Chevrolet Corvette (1955–1982)
Chevrolet Monte Carlo (1970–1977)
Chevrolet C/K Trucks (1955–1987)
GMC C/K Trucks (1955–1987)

SPECIFICATIONS
Trigger Type: Magnetic Pick-Up
Advance Type: Mechanical
Color: Available in Red, Blue, Black
Terminal Gender: Male
Mechanical Tach Drive: No
Slip Collar: No
Coil Included: No
Coil Type: External
Coil Output: 35,000+ V
Gear Material: Steel
Housing Material: Machined Aluminum
Ignition Box Required: Yes
Marine Use: No
Cylinders: 8
Vacuum Advance Adjustment Tool: Included
Installation Instructions: Included