Cadillac 472/500 V8 Pro Series Ready to Run Distributor

The TSP Pro Series Ready-to-Run Distributor for the Cadillac V8 delivers precise, adjustable ignition performance across the complete Cadillac big block family — 368 CID (6.0L), 425 CID (7.0L), 472 CID (7.7L), and 500 CID (8.2L) — in carbureted applications from 1968 through 1984. Built on a machined aluminum housing with a circuit board module and magnetic pickup trigger, this distributor provides accurate, repeatable ignition timing without the need for points, condenser, or a separate ignition control box.

Unlike the TSP Cadillac HEI distributor, the Pro Series uses an external ignition coil — giving you the flexibility to select a coil matched to your specific build — while the internal ignition module eliminates the need for a separate ignition control box or CDI unit. Clockwise distributor rotation is consistent with standard Cadillac 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 calibration — the defining advantage of the Pro Series over a fixed-curve HEI setup. A vacuum advance block-off plate is included for performance and race builds where vacuum advance is not desired. A tachometer output extension cable is included for straightforward aftermarket tach wiring without additional adapters.

The Cadillac big block powered the full range of Cadillac vehicles across four displacements from 1968 through 1984 — DeVille, Eldorado, Fleetwood, Calais, and the Commercial Chassis through the 472 and 500 CID era, transitioning through the 425 and 368 CID into the early 1980s. The Pro Series provides the advance tunability and component quality to serve both concours restoration builds and modified performance applications.

 

Why Choose the Pro Series Over the Cadillac HEI?
The TSP Cadillac HEI distributor is the simpler option — integrated coil, single 12V wire, direct-fit replacement suited for stock rebuilds and street restorations. The Pro Series Ready-to-Run is the step up for builders who need more control. The external coil setup lets you run a coil matched to your ignition system and build level. The included advance tuning kit — three bushings and four advance springs — allows the mechanical advance curve to be customized for your specific engine rather than running a fixed factory-style ramp. A vacuum advance block-off plate is included for performance builds where full mechanical advance control is preferred. For a straightforward ignition refresh on a stock Cadillac, the HEI is the right call. For a modified build, a performance carburetor application, or any situation where advance curve behavior matters, the Pro Series is the better tool.

Performance Benefit
The circuit board module and magnetic pickup trigger deliver precise, repeatable spark timing without the wear and drift that accumulates in points-based ignition systems. Three advance bushings and four advance springs allow full adjustment of the mechanical advance curve — how quickly timing rises with RPM — which is particularly valuable on Cadillac big block builds running aftermarket camshafts, elevated compression, or performance carburetors. The vacuum advance block-off plate gives race and dedicated performance builds the option to eliminate vacuum advance influence entirely. A tachometer output extension cable is included to simplify aftermarket tach wiring without additional adapters.

COMPATIBLE WITH
CADILLAC V8
• 6.0 L / 368 in3
• 7.0 L / 425 in3
• 7.7 L / 472 in3
• 8.2 L / 500 in3

NOTES
• Fits Cadillac 472, 500, 425, and 368 V8 engines in carbureted applications.
• Not compatible with fuel-injected, throttle body injected, or V8-6-4 variable displacement versions.
• Not compatible with Cadillac HT-4100 or Northstar V8 engines.
• 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
Cadillac Calais (472, 1968–1970)
Cadillac DeVille (472, 1968–1976; 425, 1977–1979; 368 carbureted, 1980–1984)
Cadillac Fleetwood / Fleetwood Brougham (472, 1968–1976; 425, 1977–1979; 368 carbureted, 1980–1984)
Cadillac Eldorado (472, 1968–1969; 500, 1970–1978; 425, 1979)
Cadillac Commercial Chassis (368, 1980–1984)

SPECIFICATIONS
Trigger Type: Circuit Board Module with Magnetic Pick-Up
Distributor Rotation: Clockwise
Advance Type: Mechanical and Vacuum
Cap Color: Available in Black, Blue, 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