Buick Big Block V8 Pro Series Ready to Run Distributor

The TSP Pro Series Ready-to-Run Distributor for the Buick big block V8 delivers precise, adjustable ignition performance across the full Buick big block family — 400 CID (6.6L), 430 CID (7.0L), and 455 CID (7.5L) — in carbureted applications from 1967 through 1976. Built on a machined aluminum housing with a circuit board module and magnetic pickup trigger, this distributor provides accurate and repeatable ignition timing without the need for points, condenser, or a separate ignition control box.

Unlike an HEI design, the Pro Series uses an external ignition coil — giving you flexibility to select a coil matched to your build — while the internal module eliminates the need for a separate ignition control box or CDI unit. Clockwise distributor rotation matches standard Buick big block architecture. A minimum coil output of 35,000 volts is required — coil is not included.

Three advance bushings and four advance springs are included, allowing the mechanical advance curve to be tailored to your engine's camshaft profile, compression ratio, and carburetor tune. A vacuum advance block-off plate is included for race and performance builds where vacuum advance is not desired. A tachometer output extension cable is included for straightforward aftermarket tach wiring without additional adapters.

The Buick big block powered some of the most sought-after American performance vehicles of the late 1960s and early 1970s — from the GS 400 and GS 455 to the Riviera 455, Wildcat 430, and the full-size LeSabre and Electra. Whether you are building a GS 455 for the street, refreshing a Riviera big block, or restoring a Wildcat 430, the Pro Series Ready-to-Run provides the advance tunability and build quality that a stock points distributor or basic HEI replacement cannot match.

 

Why Choose the Pro Series Over the Buick Big Block HEI?
The TSP big block HEI distributor is an excellent street and restoration upgrade — integrated coil, one wire, direct replacement simplicity. The Pro Series Ready-to-Run is the step up for builders who want more control. The external coil setup lets you choose a coil matched to your ignition system and build level. The advance tuning kit — three bushings and four advance springs — lets you actually dial in how timing advances across the RPM range rather than running a fixed factory-style curve. For a stock rebuild or basic restoration, the HEI is the right call. For a performance street build, a modified engine, or any application where advance curve behavior matters, the Pro Series delivers what the HEI cannot.

Performance Benefit
The circuit board module and magnetic pickup trigger deliver precise, repeatable spark timing without the wear and drift inherent in points contact. The included bushings and springs allow full customization of the mechanical advance curve — a genuine advantage on Buick big block builds running aftermarket camshafts, elevated compression, or performance carburetors where a stock advance ramp undersells the engine's potential. The vacuum advance block-off plate gives race and performance builds the option to run full mechanical advance control without vacuum advance influence. A tachometer output extension cable is included, making aftermarket tach wiring straightforward without additional adapters.

COMPATIBLE WITH
BUICK BIG BLOCK V8
• 6.6 L / 400 in³ (1967-1969)
• 7.0 L / 430 in³
• 7.5 L / 455 in³

NOTES
• Fits Buick big block V8 engines (400, 430, and 455).
• Not compatible with Buick Nailhead V8 engines (264, 322, 364, 401, 425).
• Not compatible with Buick small block V8 engines (215, 300, 340, 350).
• Designed for carbureted ignition systems only.
• 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.
• Verify distributor gear compatibility with camshaft material before installation.

COMMON VEHICLE APPLICATIONS
Buick GS 400 (1967–1969)
Buick GS 455 / GSX (1970–1975)
Buick Skylark (1967–1972)
Buick Wildcat (1967–1970)
Buick Electra / Electra 225 (1967–1974)
Buick LeSabre (1967–1974)
Buick Riviera (1967–1974)
Buick Centurion (1971–1973)
Buick Century / Regal (1973–1975)
Buick Estate Wagon (1970–1974)

SPECIFICATIONS
Trigger Type: Circuit Board Module With Magnetic Pick-Up
Distributor Rotation: Clockwise
Advance Type: Mechanical and Vacuum
Cap Color: Available in Black or Red
Terminal Gender: Male
Mechanical Tach Drive: No
Slip Collar: No
Coil Included: No
Coil Type: External
Required Coil Output: 35,000+ V
Gear Material: Steel
Housing Material: Machined Aluminum
Ignition Box Required: No
Marine Use: No
Cylinders: 8
3 Bushings And 4 Springs for Mechanical Advance: Included
Color-Matched Spark Plug Wire Retainer with Screws: Included
Vacuum Advance Block-Off Plate (Black): Included
Power Extension Cable: Included
Tachometer Output Extension Cable: Included